1. Which term is used to describe the process of placing one message format into another format so that the message can be delivered across the appropriate medium?
• flow control • encapsulation
• encoding
• multicasting
• access method 2. Refer to the graphic. Five PCs are connected through a hub. If host H1 wants to reply to a message from host H2, which statement is true? • H1 sends a unicast message to H2, but the hub forwards it to all devices.
• H1 sends a unicast message to H2, and the hub forwards it directly to H2.
• H1 sends a broadcast message to H2, and the hub forwards it to all devices.
• H1 sends a multicast message to H2, and the hub forwards it directly to H2.
3. Which two statements concerning networking standards are true? (Choose two.)
• adds complexity to networks
• encourages vendors to create proprietary protocols • provides consistent interconnections across networks
• ensures that communications work best in a single-vendor environment • simplifies new product development
4. What does the 100 mean when referencing the 100BASE-T Ethernet standard?
• type of cable used
• type of data transmission • speed of transmission
• type of connector required
• maximum length of cable allowed
5. Which address does an NIC use when deciding whether to accept a frame?
• source IP address
• source MAC address
• destination IP address • destination MAC address
• source Ethernet address
6. Which type of address is used in an Ethernet frame header?
• logical addresses only
• IP addresses only • MAC addresses only
• broadcast addresses only
7. What is the function of the FCS field in an Ethernet frame? • detects transmission errors
• provides timing for transmission
• contains the start of frame delimiter
• indicates which protocol will receive the frame
8. What is the purpose of logical addresses in an IP network?
• They identify a specific NIC on a host device.
• They are used to determine which host device accepts the frame.
• They provide vendor-specific information about the host. • They are used to determine the network that the host is located on.
• They are used by switches to make forwarding decisions.
9. Which device accepts a message on one port and always forwards the message to all other ports?
• modem
• switch
• router • hub
10. Which two networking devices are used to connect hosts to the access layer? (Choose two.)
• router • hub
• switch
• server
• computer
11. Host A needs to learn the MAC address of Host B, which is on the same LAN segment. A message has been sent to all the hosts on the segment asking for the MAC address of Host B. Host B responds with its MAC address and all other hosts disregard the request. What protocol was used in this scenario? • ARP
• DHCP
• DNS
• WINS
12. A switch receives a frame with a destination MAC address that is currently not in the MAC table. What action does the switch perform?
• It drops the frame.
• It sends out an ARP request looking for the MAC address. • It floods the frame out of all active ports, except the origination port.
• It returns the frame to the sender.
13. What is a benefit of having a router within the distribution layer?
• prevents collisions on a local network • keeps broadcasts contained within a local network
• controls which hosts have access to the network
• controls host-to-host traffic within a single local network
14. Refer to the graphic. What does the router do after it determines that a data packet from Network 1 should be forwarded to Network 2?
• It sends the data packet as it was received. • It reassembles the frame with different MAC addresses than the original frame.
• It reassembles the data packet with different IP addresses than the original data packet.
• It reassembles both the packet and the frame with different destination IP and MAC addresses.
15. Which table does a router use to make decisions on where a data packet is to be sent?
• ARP table • routing table
• network table
• forwarding table
16. If the default gateway is configured incorrectly on the host, what is the impact on communications?
• The host is unable to communicate on the local network. • The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
• The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.
• There is no impact on communications.
17. What device is typically used as the default gateway for a computer?
• a server hosted by the ISP • the router interface closest to the computer
• a server managed by a central IT department
• the switch interface that connects to the computer
18. If a router receives a packet that it does not know how to forward, what type of route must be configured on the router to prevent the router from dropping it?
• dynamic route • default route
• destination route
• default destination
19. Which two items are included in a network logical map? (Choose two.) • naming scheme
• IP addressing scheme
• length of cable runs
• physical location of networking devices
• specific layout of interconnections between networking devices and hosts
20. An integrated router can normally perform the functions of which two other network devices? (Choose two.)
• NIC • switch
• e-mail server
• application server • wireless access point
21. What is a reason for disabling simple file sharing?
• It enables the user to map a remote resource with a local drive.
• It enables the user to share all files with all users and groups.
• It enables the user to share printers. • It enables the user to set more specific security access levels.
Q.1 Which three statements are true about local and network applications? (Choose three.)
A local application is loaded in a local computer and can be accessed by a remote computer on the network.
A network application is loaded in a local computer and accessed from a remote computer.
A local application is loaded in a local computer and accessed only by the local computer.
A network application is loaded in a local computer and accessed only by the local computer.
An example of a local application is e-mail.
An example of a network application is instant messaging.
Q.2 A wireless DHCP client cannot connect to the Internet through a Linksys integrated router. When you type ipconfig on the host, no IP address, subnet mask, or default gateway shows. What are two of the first things you will check? (Choose two.)
SSID
if the wireless client is configured for DHCP
the cable between client and integrated router
the firewall configuration on the integrated router
if the correct default gateway is configured on the client
if the correct default gateway is configured on the integrated router
Q.3 Refer to the graphic. Assume that the command output is from a wireless DHCP client that is connected to a Linksys integrated router. What can be deduced from the output?
The wireless connection is good.
The WEP key or SSID needs to be checked.
The DHCP configuration on the router needs to be checked.
The wireless NIC driver or the NIC itself needs to be reinstalled.
Q.4 What measurement is commonly used to describe communication speed when transferring data?
bps
cps
Hz
MB
Q.5 What is an accurate description of network devices in the distribution layer?
They are designed to interconnect individual hosts.
They are designed to interconnect multiple companies.
They are designed to interconnect local network segments.
They are designed to switch data packets as fast as possible.
Q.6 When acting as a DHCP server, an integrated router can provide what three types of information to a client? (Choose three.)
physical address
MAC address
default gateway
static IP address
dynamic IP address
DNS server address
Q.7 Where do ISPs get the public addresses that they assign to end users?
ISPs create the addresses themselves.
ISPs are assigned addresses through the RFC.
ISPs obtain their addresses automatically.
ISPs obtain address blocks from registry organizations.
Q.8 Refer to the graphic. What is the effect of setting the security mode to WEP on the Linksys integrated router?
It identifies the wireless LAN.
It allows the access point to inform clients of its presence.
It translates IP addresses into easy-to-remember domain names.
It encrypts data between the wireless client and the access point.
It ensures that only authorized users are allowed access to the WLAN.
It translates an internal address or group of addresses into an outside, public address.
Q.9 When are leased lines typically used?
when low bandwidth is required
for home and small business connectivity
when a dedicated digital data line is necessary
as a less expensive option to cable and DSL modem service
Q.10 Which wireless protocol is used for encryption?
EAP
Open
PSK
WEP
Q.11 The area covered by a single AP is known as what?
ad-hoc network
basic service set
independent basic service set
extended service set
distribution system
Q.12 Which installation option should be chosen when the current operating system is too damaged to work properly?
upgrade
multi-boot
clean install
virtualization
Q.13 What layer is the first point of entry for a host into the network?
core layer
access layer
network layer
distribution layer
Q.14 What two commands can be used to form a new binding if client information does not agree with the DHCP client table? (Choose two.)
15. What are two advantages of purchasing a custom-built computer? (Choose two.)
usually a lower cost
no waiting period for assembly
user can specify higher performance components
supports higher-end graphics and gaming applications
fewer components to replace
Q.16 What information within a data packet does a router use, by default, to make forwarding decisions?
the destination MAC address
the destination IP address
the destination host name
the destination service requested
Q.17 What is a service pack?
an access policy
an agreement between a company and a vendor
a piece of code created to fix one specific problem
a collection of patches and updates released by a vendor
a small piece of software designed specifically for security issues
Q.18 What is an ISP?
It is a standards body that develops cabling and wiring standards for networking.
It is a protocol that establishes how computers within a local network communicate.
It is an organization that allows individuals and businesses to connect to the Internet.
It is a networking device that combines the functionality of several different networking devices in one.
Q.19 Which two statements correctly describe Media Access Control (MAC) addresses? (Choose two.)
MAC addresses are used to identify a specific NIC.
MAC addresses are physical addresses.
MAC addresses contain a network number and unique host identification.
MAC addresses are always assigned to network devices by a network administrator.
MAC addresses can be dynamically assigned.
Q.20 What is the name for the contract between a customer and an ISP that specifies requirements for uptime and service response time?
DSL
IAB
NAP
SLA
Q.21 What are two ways that a user can interact with an operating system shell? (Choose two.)
CLI
OS
GUI
NIC
kernel
Q.22 Select the connection that would require a straight-through cable.
a switch to a hub
a router to a switch
a switch to a switch
a router to a router
23. Choose the option that shows the correct sequence of steps in the encapsulation of TCP/IP data that is passed from a source to a destination host?
A. converts data to bits for transmission
B. packages the data for end to end transport
C. adds the data-link header and trailer
D. adds the network IP address to the header of the frame
A,B,C,D
A,C,D,B
B,D,C,A
B,C,D,A
D,C,B,A
Q.24 What is specified by the network number in an IP address?
the network to which the host belongs
the physical identity of the computer on the network
the node of the subnetwork which is being addressed
the broadcast identity of subnetwork
Q.25 Refer to the graphic. What is the purpose of assigning a Network Name of Academy?
It identifies the wireless LAN.
It translates IP addresses into easy-to-remember domain names.
It encrypts data between the wireless client and the access point.
It allows access to the AP configuration GUI by name rather than address.
It translates an internal address or group of addresses into an outside, public address.
Q.26 Which of the following statements best describes DNS?
DNS servers are used to map an IP address to a physical address.
DNS servers are used to map a name to an IP address.
DNS servers are used to configure logical address information for host computers.
DNS servers are used to translate from private addresses to public addresses.
Q.27 Which of the following are the address ranges of the private IP addresses? (Choose three.)
10.0.0.0 to 10.255.255.255
200.100.50.0 to 200.100.25.255
150.150.0.0 to 150.150.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255
127.16.0.0 to 127.31.255.255
Q.28 Which protocol is used to transfer files among network devices and perform file-management functions?
DNS
FTP
HTML
HTTP
Q.29 Select three statements that correctly describe how DHCP services may be provided. (Choose three.)
An integrated router provides IP configurations for most ISPs.
An integrated router can act as both DHCP server and DHCP client.
A home PC using a static IP address obtained that address from a DHCP server.
Most home network integrated routers receive an IP configuration directly from their ISP.
A variety of devices can act as DHCP servers, as long as they run DHCP service software.
A home PC is required by standards to obtain an IP address and default gateway from a DHCP server (usually the ISP).
Q.30 Refer to the graphic. Based on the information that is shown, what statement is true?
This configuration would be commonly found in an ad hoc wireless network.
Any wireless client that is attached to this access point would have the same IP address and SSID.
All wireless devices that are connected to this access point must have an assigned SSID of Academy.
In addition to accepting wireless client requests, this access point must connect to the wired network.
Q.31 Identify two causes of physical layer network problems. (Choose two.)
logical addressing issues
improperly terminated cables
cables plugged into wrong ports
incorrect MAC address assigned
packets received out of sequence
incorrect subnet mask on an interface
Q.32 Which part of the electromagnetic spectrum is commonly used to exchange data between a PDA and a computer?
FM
radar
infrared
ultraviolet
Q.33 Which of the following are transport layer protocols of the TCP/IP model? (Choose two.)
FTP
UDP
SMTP
TFTP
TCP
Q.34 For the second time in a week, workstations on a LAN are not able to log into the server. The technician fixed the problem the first time, but cannot remember the steps taken to solve it. What aspect of the troubleshooting process has the technician neglected?
identifying the problem
asking end-users questions
documenting the troubleshooting process
using structured techniques to solve a problem
Q.35 What action will a router take when it receives a frame with a broadcast MAC address?
It will not forward the frame to another network.
It forwards the frame back to the sending host with its IP address as a response.
It forwards the frame out of all interfaces except the interface where the frame was received.
It forwards the frame back out the receiving interface to insure all hosts on the local network receive it.
Q.36 A network host is accessing a web server. What two protocols are most likely being used as the TCP/IP model application layer protocol and the internetwork layer protocol? (Choose two.)
IP
FTP
TCP
DHCP
HTTP
Q.37 Which statement is true concerning stateful packet inspection?
Access is permitted based on IP addresses of the source and destination devices.
Access is permitted based on the MAC addresses of the source and destination devices.
Access is permitted only if the type of application that is attempting to reach the internal host is allowed.
Access is permitted only if it is a legitimate response to a request from an internal host.
Q.38 What does the term "attenuation" mean in data communication?
loss of signal strength as distance increases
time for a signal to reach its destination
leakage of signals from one cable pair to another
strengthening of a signal by a networking device
39. What is the default subnet mask for a class B address?
Q.40 Refer to the graphic. Based on the configuration information that is shown, which three types of 802.11 networks are allowed access to the WLAN? (Choose three.)
802.11a
802.11b
802.11e
802.11g
802.11n
802.11x
Q.41 Within a local network, which two items must be unique on a computer for it to successfully connect to the network? (Choose two.)
IP address
subnet mask
computer name
default gateway address
operating system version
Q.42 When considering the purchase of a new operating system, what is meant by "Total Cost of Ownership?"
applications and support costs
hardware and support costs
hardware and software costs
hardware, software, and support costs
hardware, operating system, and applications costs
Q.43 A computer joins the network and announces itself to all hosts on the LAN. What type of message does the computer send out?
broadcast
simulcast
multicast
unicast
Q.44 Refer to the graphic. What feature can be installed on the Linksys integrated router to convert private IP addresses to Internet-routable addresses?
authentication
DHCP
encryption
firewall
NAT
WEP
Q.45 When terminating UTP cabling, why is it important to untwist only a small amount of each wire pair?
minimizes crosstalk
makes installation faster
ensures wires are in correct order
makes it easier to fit wires into connector
Q.46 A host sent a message that all other hosts on the local network received and processed. What type of domain are all these hosts a part of?
local domain
multicast domain
collision domain
broadcast domain
Q.47 Your school network blocks all websites related to online gaming. What type of security policy is being applied?
identification and authentication
remote access
acceptable use
incident handling
Q.48 Refer to the graphic. Assume that the exhibited output is from a host that is connected to a Linksys integrated router. What is one of the first things you should check?
IP address on the host
IP address on the router
subnet mask on the host
default gateway on the host
link status LED on the front of the router
Q.49 The transmit pins are disconnected and only the receive pins are used.
The transmit pins are disconnected and only the receive pins are used.
The transmit pins on one device are connected to the transmit pins on the other device.
The receive pins on one device are connected to the receive pins on the other device.
The transmit pins on one device are connected to the receive pins on the other device.
50. What are two examples of storage peripheral devices? (Choose two.)
printer
flash drive
headphones
external DVD
barcode reader
Q.51 What are the two possible values for a digital bit? (Choose two.)
0
1
A
F
#
9
Q.52 What type of computer would most likely use a docking station?
Q.1 What should a network administrator do first after receiving a call from a user who cannot access the company web server?
Reboot the web server.
Replace the NIC of the computer.
Ask the user to log off and log on again.
Ask the user what URL has been typed and what error message displays.
Q.2 A customer called the cable company to report that the Internet connection is unstable. After trying several configuration changes, the technician decided to send the customer a new cable modem to try. What troubleshooting technique does this represent?
Q.3 Only one workstation on a particular network cannot reach the Internet. What is the first troubleshooting step if the divide-and-conquer method is being used?
Check the NIC, and then check the cabling.
Check the workstation TCP/IP configuration.
Test all cables, and then test layer by layer up the OSI model.
Attempt to Telnet, and then test layer by layer down the OSI model.
Q.4 Which two troubleshooting techniques are suitable for both home networks and large corporate networks? (Choose two.)
having a backup ISR
running network monitoring applications
documenting the troubleshooting process
keeping a record of system upgrades and software versions
keeping spare switches, routers, and other equipment available
Q.5 Identify two physical-layer network problems. (Choose two.)
hardware failure
software configuration
devices not able to ping
loose cable connections
device driver configuration
Q.6 Which ipconfig command requests IP configuration from a DHCP server?
Q.10 A technician suspects that a Linksys integrated router is the source of a network problem. While troubleshooting, the technician notices a blinking green activity LED on some of the ports. What does this indicate?
Self-diagnostics have not completed.
The power supply is the source of the problem.
The ports are operational and are receiving traffic.
The ports are operational, but no traffic is flowing.
There are no cables plugged into those ISR ports.
The ports have cables plugged in, but they are not functional.
Q.11 A PC is plugged into a switch and is unable to connect to the network. The UTP cable is suspected. What could be the problem?
A straight-through cable is being used
The connectors at both ends of the cable are RJ-45.
The RJ-45 connectors are crimped onto the cable jacket.
A crossover cable is being used.
Q.12 Refer to the graphic. What configuration is incorrect in the network shown?
The host IP address is incorrect.
The host subnet mask is incorrect.
The host default gateway is incorrect.
The wired connection is the wrong type of cable.
The Linksys integrated router does not support wireless.
Q.13 Which three settings must match on the client and access point for a wireless connection to occur? (Choose three.)
SSID
authentication
MD5 checksum
antennae type
encryption key
MAC address filters
Q.14 A technician is troubleshooting a security breach on a new wireless access point. Which three configuration settings make it easy for hackers to gain access? (Choose three.)
configuring NAT
broadcasting the SSID
using open authentication
enabling MAC address filters
using the default internal IP address
using DHCP to provide IP addresses
Q.15 Refer to the graphic. The wireless host cannot access the Internet, but the wired host can. What is the problem?
The host WEP key is incorrect.
The host IP address is incorrect.
The host subnet mask is incorrect.
The host default gateway is incorrect.
The integrated router internal IP address is incorrect.
The integrated router Internet IP address is incorrect.
Q.16 Refer to the graphic. What configuration is incorrect in the network shown?
The host IP address is incorrect.
The host subnet mask is incorrect.
The host default gateway is incorrect.
The wired connection is the wrong type of cable.
The Linksys integrated router does not support wireless.
Q.17 When acting as a DHCP server, what three types of information can an ISR provide to a client? (Choose three.)
physical address
MAC address
default gateway
static IP address
dynamic IP address
DNS server address
Q.18 What two items could be checked to verify connectivity between the router and the ISP? (Choose two.)
router status page
wireless card settings
router operating system version
local host operating system version
connectivity status as indicated by LEDs
Q.19 A technician is unsuccessful in establishing a console session between a PC and a Linksys integrated router. Both devices have power, and a cable is connected between them. Which two troubleshooting steps could help to diagnose this problem? (Choose two.)
Ensure the correct cable is used.
Ensure the SSID is the same on both devices.
Ensure both devices have the same IP address.
Ensure both devices have different subnet masks.
Ensure the encryption type on both devices match.
Ensure the link status LED on the integrated router is lit.
Q.20 Network baselines should be performed in which two situations? (Choose two.)
after the network is installed and running optimally
after a virus outbreak is discovered on the network
after major changes are implemented on the network
after several computers are added to the network
at the end of the work week
Q.21 Typically, help desk personnel assist end users in which two tasks? (Choose two.)
identifying when the problem occurred
determining if other users are currently logged into the computer
updating network diagrams and documentation
implementing the solution to the problem
running a network baseline test
determining the cost of fixing the problem
Q.22 How does remote-access software help in the troubleshooting process?
Remote access uses a live chat feature.
Users have to be present so that they can view LEDs and change cables if necessary.
Diagnostics can be run without a technician being present at the site.
FAQs can be consulted more easily.
Q.23 Which two items should be added to the documentation following a troubleshooting event? (Choose two.)
final resolution
repetitive measures
number of people involved in the problem
accurate current network infrastructure diagrams
results of successful and unsuccessful troubleshooting steps
Q.2 During a pretexting event, how is a target typically contacted?
by e-mail
by phone
in person
through another person
Q.3 While surfing the Internet, a user notices a box claiming a prize has been won. The user opens the box unaware that a program is being installed. An intruder now accesses the computer and retrieves personal information. What type of attack occurred?
worm
virus
Trojan horse
denial of service
Q.4 What is a major characteristic of a Worm?
malicious software that copies itself into other executable programs
tricks users into running the infected software
a set of computer instructions that lies dormant until triggered by a specific event
exploits vulnerabilities with the intent of propagating itself across a network
Q.5 A flood of packets with invalid source-IP addresses requests a connection on the network. The server busily tries to respond, resulting in valid requests being ignored. What type of attack occurred?
Trojan horse
brute force
ping of death
SYN flooding
Q.6 What type of advertising is typically annoying and associated with a specific website that is being visited?
adware
popups
spyware
tracking cookies
Q.7 What is a widely distributed approach to marketing on the Internet that advertises to as many individual users as possible via IM or e-mail?
brute force
spam
spyware
tracking cookies
Q.8 What part of the security policy states what applications and usages are permitted or denied?
identification and authentication
remote access
acceptable use
incident handling
Q.9 Which statement is true regarding anti-virus software?
Only e-mail programs need to be protected.
Only hard drives can be protected.
Only after a virus is known can an anti-virus update be created for it.
Only computers with a direct Internet connection need it.
Q.10 Which two statements are true concerning anti-spam software? (Choose two.)
Anti-spam software can be loaded on either the end-user PC or the ISP server, but not both.
When anti-spam software is loaded, legitimate e-mail may be classified as spam by mistake.
Installing anti-spam software should be a low priority on the network.
Even with anti-spam software installed, users should be careful when opening e-mail attachments.
Virus warning e-mails that are not identified as spam via anti-spam software should be forwarded to other users immediately.
Q.11 What term is used to describe a dedicated hardware device that provides firewall services?
server-based
integrated
personal
appliance-based
Q.12 Which acronym refers to an area of the network that is accessible by both internal, or trusted, as well as external, or untrusted, host devices?
SPI
DMZ
ISR
ISP
Q.13 Which statement is true about port forwarding within a Linksys integrated router?
Only external traffic that is destined for specific internal ports is permitted. All other traffic is denied.
Only external traffic that is destined for specific internal ports is denied. All other traffic is permitted.
Only internal traffic that is destined for specific external ports is permitted. All other traffic is denied.
Only internal traffic that is destined for specific external ports is denied. All other traffic is permitted.
Q.14 To which part of the network does the wireless access point part of a Linksys integrated router connect?
DMZ
external
internal
a network other than the wired network
Q.15 Refer to the graphic. What is the purpose of the Internet Filter option of Filter IDENT (Port 113. on the Linksys integrated router?
to require a user ID and password to access the router
to prevent outside intruders from attacking the router through the Internet
to require a pre-programmed MAC address or IP address to access the router
to disable tracking of internal IP addresses so they cannot be spoofed by outside devices
Q.16 What statement is true about security configuration on a Linksys integrated router?
A DMZ is not supported.
The router is an example of a server-based firewall.
The router is an example of an application-based firewall.
Internet access can be denied for specific days and times.
Q.17 What environment would be best suited for a two-firewall network design?
a large corporate environment
a home environment with 10 or fewer hosts
a home environment that needs VPN access
a smaller, less congested business environment
Q.18 What is one function that is provided by a vulnerability analysis tool?
It provides various views of possible attack paths.
It identifies missing security updates on a computer.
It identifies wireless weak points such as rogue access points.
It identifies all network devices on the network that do not have a firewall installed.
It identifies MAC and IP addresses that have not been authenticated on the network.
Q.19 Many best practices exist for wired and wireless network security. The list below has one item that is not a best practice. Identify the recommendation that is not a best practice for wired and wireless security.
Periodically update anti-virus software.
Be aware of normal network traffic patterns.
Periodically update the host operating system.
Activate the firewall on a Linksys integrated router.
Configure login permissions on the integrated router.
Disable the wireless network when a vulnerability analysis is being performed.
Q.20 What best practice relates to wireless access point security?
activation of a popup stopper
a change of the default IP address
an update in the antivirus software definitions
physically securing the cable between the access point and client
Q.21 Refer to the graphic. In the Linksys Security menu, what does the SPI Firewall Protection option Enabled provide?
It prevents packets based on the application that makes the request.
It allows packets based on approved internal MAC or IP addresses.
It requires that packets coming into the router be responses to internal host requests.
It translates an internal address or group of addresses into an outside, public address.
Q.1 Why is IEEE 802.11 wireless technology able to transmit further distances than Bluetooth technology?
transmits at much lower frequencies
has higher power output
transmits at much higher frequencies
uses better encryption methods
Q.2 What are three advantages of wireless over wired technology? (Choose three.)
more secure
longer range
anytime, anywhere connectivity
easy and inexpensive to install
ease of using licensed air space
ease of adding additional devices
Q.3 What are two benefits of wireless networking over wired networking? (Choose two.)
speed
security
mobility
reduced installation time
allows users to share more resources
not susceptible to interference from other devices
Q.4 A technician has been asked to provide wireless connectivity to the wired Ethernet network of a building. Which three factors affect the number of access points needed? (Choose three.)
the size of the building
the number of solid interior walls in the building
the presence of microwave ovens in several offices
the encryption method used on the wireless network
the use of both Windows and Appletalk operating systems
the use of shortwave or infrared on the AP
Q.5 Why is security so important in wireless networks?
Wireless networks are typically slower than wired networks.
Televisions and other devices can interfere with wireless signals.
Wireless networks broadcast data over a medium that allows easy access.
Environmental factors such as thunderstorms can affect wireless networks.
Q.6 What does the Wi-Fi logo indicate about a wireless device?
IEEE has approved the device.
The device is interoperable with all other wireless standards.
The device is interoperable with other devices of the same standard that also display the Wi-Fi logo.
The device is backwards compatible with all previous wireless standards.
Q.7 Which statement is true concerning wireless bridges?
connects two networks with a wireless link
stationary device that connects to a wireless LAN
allows wireless clients to connect to a wired network
increases the strength of a wireless signal
Q.8 Which WLAN component is commonly referred to as an STA?
cell
antenna
access point
wireless bridge
wireless client
Q.9 Which statement is true concerning an ad-hoc wireless network?
created by connecting wireless clients in a peer-to-peer network
created by connecting wireless clients to a single, centralized AP
created by connecting multiple wireless basic service sets through a distribution system
created by connecting wireless clients to a wired network using an ISR
Q.10 Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option Mixed mean?
The router supports encryption and authentication.
The router supports both wired and wireless connections.
The router supports 802.11b, 802.11g, and 802.11n devices.
The router supports connectivity through infrared and radio frequencies.
Q.11 Refer to the graphic. In the Wireless menu of a Linksys integrated router, what configuration option allows the presence of the access point to be known to nearby clients?
Network Mode
Network Name (SSID)
Radio Band
Wide Channel
Standard Channel
SSID Broadcast
Q.12 Which two statements about a service set identifier (SSID) are true? (Choose two.)
tells a wireless device to which WLAN it belongs
consists of a 32-character string and is not case sensitive
responsible for determining the signal strength
all wireless devices on the same WLAN must have the same SSID
used to encrypt data sent across the wireless network
Q.13 Which two statements characterize wireless network security? (Choose two.)
Wireless networks offer the same security features as wired networks.
Wardriving enhances security of wireless networks.
With SSID broadcast disabled, an attacker must know the SSID to connect.
Using the default IP address on an access point makes hacking easier.
An attacker needs physical access to at least one network device to launch an attack.
Q.14 What type of authentication does an access point use by default?
Open
PSK
WEP
EAP
Q.15 Which statement is true about open authentication when it is enabled on an access point?
requires no authentication
uses a 64-bit encryption algorithm
requires the use of an authentication server
requires a mutually agreed upon password
Q.16 What are two authentication methods that an access point could use? (Choose two.)
WEP
WPA
EAP
ASCII
pre-shared keys
Q.17 What is the difference between using open authentication and pre-shared keys?
Open authentication requires a password. Pre-shared keys do not require a password.
Open authentication is used with wireless networks. Pre-shared keys are used with wired networks.
Pre-shared keys require an encrypted secret word. Open authentication does not require a secret word.
Pre-shared keys require a MAC address programmed into the access point. Open authentication does not require this programming.
Q.18 What term describes the encoding of wireless data to prevent intercepted data from being read by a hacker?
Q.19 What access-point feature allows a network administrator to define what type of data can enter the wireless network?
encryption
hacking block
traffic filtering
MAC address filtering
authentication
Q.20 What are the two WEP key lengths? (Choose two.)
8 bit
16 bit
32 bit
64 bit
128 bit
Q.21 Complete the following sentence: WEP is used to ______ , and EAP is used to _____ wireless networks.
encrypt; authenticate users on
filter traffic; select the operating frequency for
identify the wireless network; compress data on
create the smallest wireless network; limit the number of users on
Q.1 A user types www.cisco.com into a web browser address textbox. What does www.cisco.com represent?
the IP address of a web server
a physical network address
the closest router interface to the source
the source IP address in the data transmission
Q.2 What type of server would use IMAP?
DNS
DHCP
e-mail
FTP
Telnet
web
Q.3 Which type of server would most likely be used first by a network client in a corporate environment?
DNS
DHCP
e-mail
FTP
Telnet
web
Q.4 Which protocol is used by FTP to transfer files over the Internet?
TCP
SMTP
UDP
SNMP
Q.5 Which protocols are TCP/IP application layer protocols? (Choose two.)
UDP
FTP
IP
SMTP
TCP
Q.6 Which of the following are layers of the TCP/IP model? (Choose three.)
Application
Physical
Internet
Network Access
Presentation
Q.7 You are creating a network-based video game. What influences your decision about which transport protocol to use for the application?
UDP will not disrupt the game to retransmit dropped packets.
TCP provides extra acknowledgements that will ensure smooth video delivery.
Both TCP and UDP can be used simultaneously to ensure speed and guaranteed delivery.
Both TCP and UDP may slow transmission and disrupt game operation, so no transport protocol should be used.
Q.8 Whenever e-mail clients send letters, what device is used to translate the domain names into their associated IP addresses?
Uniform Resource Locator
Network redirector server
SNMP server
DNS server
Q.9 Which application is most likely used to translate www.cisco.com to 198.133.219.25?
DHCP
DNS
FTP
HTTP
POP
SMTP
Q.10 Refer to the graphic. Which protocol is used to access this website?
IM
FTP
HTTP
SNMP
VoIP
Q.11 Which port number is used by SMTP?
20
21
25
26
110
Q.12 Which protocol is used by e-mail servers to communicate with each other?
FTP
HTTP
TFTP
SMTP
POP
SNMP
Q.13 What client software enables logged in users to communicate with other logged in users in real time?
blog
e-mail
web mail
instant messaging
Q.14 An Internet server is running both FTP and HTTP services. How does the server know which of these applications should handle an incoming segment?
The packet header identifies it as an HTTP or FTP packet.
The data in the segment is specially formatted for either HTTP or FTP.
The segment destination port number identifies the application that should handle it.
The source port number is associated with one of these well known server applications.
Q.15 What term is used to describe how TCP/IP protocols are layered and interact to format, address, and transmit information across a network?
Q.16 What three items are contained in an Ethernet frame? (Choose three.)
source IP address
source MAC address
destination IP address
destination MAC address
error-checking information
Q.17 What information is contained in an IP header?
source and destination IP addresses
source and destination MAC addresses
only destination IP and MAC addresses
both source and destination IP and MAC addresses
Q.18 Cabling issues are associated with which OSI layer?
4
2
1
3
Q.19 A device receives an Ethernet frame and recognizes the MAC address as its own. What does the device do to the message to get to the encapsulated data?
removes the IP header
removes the TCP header
passes data to the application layer
removes the Ethernet header and trailer
Q.20 A client has decoded a frame and started the de-encapsulation process. In which order does the de-encapsulation process occur?
1) remove IP header
2) remove Ethernet header and trailer
3) remove TCP header
4) pass data to the application
1) add TCP header to data
2) add an IP header
3) add frame header and trailer
4) encode the frame into bits
1) remove Ethernet header and trailer
2) remove IP header
3) remove TCP header
4) pass data to the application
1) add TCP header to data
2) add Ethernet header and trailer
3) add an IP header
4) encode the frame into bits
Q.21 What is an advantage of the use of layers in the OSI reference model?
It breaks network communications into larger parts.
It increases complexity.
It prevents changes in one layer from affecting other layers.
It requires the use of single-vendor equipment for hardware and software communications.
Q.22 What is the correct order of the layers of the OSI reference model, starting at the lowest layer and working up the model?
data link, physical, transport, network, presentation, session, application
physical, data link, network, session, transport, presentation, application
physical, data link, network, transport, presentation, session, application
physical, data link, network, transport, session, presentation, application
application, session, presentation, transport, data link, network, physical
Q.2 Refer to the graphic. A user at the workstation cannot connect to the server. All cables have been tested and are working and all devices have IP addressing. However, the user cannot ping the server. What is causing the problem?
The router interface does not have a default gateway.
The switch does not have an IP address and default gateway.
The workstation and server are on different logical networks.
The workstation does not know the MAC address of the switch.
Q.3 Which part of an IP address identifies a specific device on a network?
first two octets
third and fourth octets
network portion
host portion
only the fourth octet
Q.4 Given a host with the IP address 172.32.65.13 and a default subnet mask, to which network does the host belong?
172.32.65.0
172.32.65.32
172.32.0.0
172.32.32.0
Q.5 Which default subnet mask provides the most host bits?
Q.10 What destination IP address is used in a unicast packet?
a specific host
a group of host
the default gateway
the network broadcast address
Q.11 What is the destination MAC address in a multicast Ethernet frame?
the MAC address of the sending host
the MAC address of the destination hos
an address that begins with 01-00-5E in hexadecimal
a 48-bit hexadecimal address expressed as FF-FF-FF-FF-FF-FF
Q.12 Yvonne is talking to her friend on the phone. What type of message is this?
broadcast
simulcast
multicast
unicast
Q.13 What information must be included within a unicast message for it to be delivered on an Ethernet network?
MAC and IP addresses for the default router
IP address and subnet mask of the default gateway
MAC and IP addresses that correspond to a destination grou
MAC and IP addresses that correspond to a specific destination host
Q.14 A PC obtains its IP address from a DHCP server. If the PC is taken off the network for repair, what happens to the IP address configuration?
The configuration is permanent and nothing changes.
The address lease is automatically renewed until the PC is returned.
The address is returned to the pool for reuse when the lease expires.
The configuration is held by the server to be reissued when the PC is returned.
Q.15 Which type of server dynamically assigns an IP address to a host?
ARP
DHCP
DNS
RARP
Q.16 Which three statements describe a DHCP Discover message? (Choose three.)
The source MAC address is 48 ones (FF-FF-FF-FF-FF-FF).
The destination IP address is 255.255.255.255.
The message comes from a server offering an IP address.
The message comes from a client seeking an IP address.
All hosts receive the message, but only a DHCP server replies.
Only the DHCP server receives the message.
Q.17 Refer to the graphic. A host connects to a Linksys integrated router that is also a DHCP server and receives an IP address from it. Which address does the host need to access the ISP and the Internet?
IP address of the destination host
public gateway IP address of the ISP
external IP address of the integrated router that connects to the ISP
internal IP address of the integrated router that connects to the local network
Q.18 Which statement is true concerning private IP addresses?
ensures that two networks separated by the Internet use unique IP network numbers
allows internal hosts to communicate with servers across the Internet
solves the issue of a finite number of available public IP addresses
allows for ISPs to be able to quickly determine network location
Q.19 What is one of the purposes of NAT?
filters network traffic based on IP address ranges
prevents external users from detecting the IP addresses used on a network
inspects traffic that might be harmful or used in an attack against the network
translates IP addresses into easy-to-remember domain names
Q.20 Which two statements describe packets that are sent through a Linksys integrated router using NAT? (Choose two.)
Packets that are sent to any destination need to be translated.
Packets that are sent to hosts on the same network need to be translated.
Packets that are sent to a destination outside the local network need to be translated.
Packets that are sent to a destination outside a local network do not need to be translated.
Packets that are sent between hosts on the same local network do not need to be translated.
Q.21 Refer to the graphic. NAT and DHCP are installed on the Linksys integrated router. Which IP address is most likely to be assigned to the local computer, Host1?
