CCNA CHATER 8-11

CHAPTER 8

1. Which type of cable run is most often associated with fiber-optic cable?
Xbackbone cable
horizontal cable
patch cable
work area cable

2. In most business LANs, which connector is used with twisted-pair networking cable?
**RJ-45

3. When is a straight-through cable used in a network?
**when connecting a host to a switch

4. With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
**the magnetic field around the adjacent pairs of wire

5. Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?
**Physical

6. An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
**OTDR

7. XYZ Company is installing new cable runs on their data network. What two types of cable would most commonly be used for new runs? (Choose two.)
**coax
**Cat6 UTP

8. What is a possible effect of improperly applying a connector to a network cable?
**Data transmitted through that cable may experience signal loss.

9. What are three measures of data transfer? (Choose three.)
**frequency
**throughput
**bandwidth

10. Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet **crossover cable

11. In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?
**fiber

12. Which fiber connector supports full duplex Ethernet?
kolmas

13. Which method of signal transmission uses radio waves to carry signals?
**wireless

14. Which characteristics describe fiber optic cable? (Choose two.)
**It is not affected by EMI or RFI.
**It is the most expensive type of LAN cabling.

15. Which of the following is a characteristic of single-mode fiber-optic cable?
**generally uses LEDs as the light source

16. What is considered a benefit of wireless as a media choice?
**more host mobility

17. What characteristic of UTP cable helps reduce the effects of interference?
**the twisting of the wires in the cable

What is a primary role of the Physical layer in transmitting data on the network?
**create the signals that represent the bits in each frame on to the media

CHAPTER 9

1. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?
**Host B must wait until it is certain that Host A has completed sending its frame.

2. Ethernet operates at which layers of the OSI model? (Choose two.)
**Physical layer
**Data-link layer

3. Which of the following describe interframe spacing? (Choose two.)
**the minimum interval, measured in bit-times, that any station must wait before sending another frame
**the time allowed for slow stations to process a frame and prepare for the next frame
the maximum interval within which a station must send another frame to avoid being considered unreachable

4. What three primary functions does data link layer encapsulation provide? (Choose three.)
**addressing
**error detection
**frame delimiting

5. When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
**The hosts return to a listen-before-transmit mode. <--- The hosts creating the collision have priority to send data. The hosts creating the collision retransmit the last 16 frames. The hosts extend their delay period to allow for rapid transmission.

6. What are three functions of the upper data link sublayer in the OSI model? (Choose three.) recognizes streams of bits
**identifies the network layer protocol
**makes the connection with the upper layers identifies the source and destination applications
**insulates network layer protocols from changes in physical equipment determines the source of a transmission when multiple devices are transmitting

7. What does the IEEE 802.2 standard represent in Ethernet technologies? MAC sublayer Physical layer

**Logical Link Control sublayer Network layer

8. Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?
**A random delay helps prevent the stations from experiencing another collision during the transmission.

9. Refer to the exhibit. Which option correctly matches the frame field type with the contents that frame field includes? header field - preamble and stop frame
**data field - network layer packet data field - physical addressing trailer field - FCS and SoF

10. Host A has an IP address of 172.16.225.93 and a mask of 255.255.248.0. Host A needs to communicate with a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on the destination address. What two things will occur? (Choose two.)
**Host A will broadcast an ARP request for the MAC of the destination host. A result of 172.16.224.0 will be obtained.
**A result of 172.16.225.255 will be obtained.

11. Which of the following is a drawback of the CSMA/CD access method?
**Collisions can decrease network performance. It is more complex than non-deterministic protocols. Deterministic media access protocols slow network performance. CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.

12. Ethernet operates at which layer of the TCP/IP network model?
application physical transport internet data link
**network access

13. What is the primary purpose of ARP? translate URLs to IP addresses
**resolve IPv4 addresses to MAC addresses provide dynamic IP configuration to network devices convert internal private addresses to external public addresses

14. Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?
**No collisions will occur on this link. Only one of the devices can transmit at a time. The switch will have priority for transmitting data. The devices will default back to half duplex if excessive collisions occur.

15. Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)
**A frame with the destination MAC address of Router_A.
**A packet with the destination IP of Server_B.

16. Which statements correctly describe MAC addresses? (Choose three.)
dynamically assigned
**copied into RAM during system startup layer 3 address
**contains a 3 byte OUI
**6 bytes long 32 bits long

17. Which two features make switches preferable to hubs in Ethernet-based networks? (Choose two.) reduction in cross-talk
**minimizing of collisions support for UTP cabling division into broadcast domains
**increase in the throughput of communications

18. What are the two most commonly used media types in Ethernet networks today? (Choose two.) coaxial thicknet
**copper UTP coaxial thinnet
**optical fiber shielded twisted pair

19. Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below. 85 90
**BA A1 B3 1C

20. After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data? the device involved in the collision with the lowest MAC address the device involved in the collision with the lowest IP address
**any device in the collision domain whose backoff timer expires first those that began transmitting at the same time

CHAPTER 10

1. Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)
connecting two routers together via their fast ethernet ports
connecting two devices with the same interface type at Fast Ethernet speeds

2. Which option identifies the primary interface which would be used for initial configuration of a Cisco router?
console interface

3. What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)
greater distances per cable run
limited susceptibility to EMI/RFI
greater bandwidth potential

4. A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?
UTP

5. What does the term "attenuation" mean in data communication?
loss of signal strength as distance increases

6. How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?
2046

7. Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork?
255.255.255.0

8. A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet?
255.255.255.224

9. What type of network cable is used between a terminal and a console port?
rollover

10. Which device is used to create or divide broadcast domains?
router

11. Refer to the exhibit. What destination IP address will PC1 place in the header for a packet destined for PC2?
192.168.3.54

12. Refer to the exhibit. Based on the IP configuration shown, what would be the result of Host A and Host B attempting to communicate outside the network segment?
host B would be successful, host A would fail

13. Which three types of connectors are commonly associated with Cisco's V.35 serial cables? (Choose three.)
DB 60
Winchester 15 pin
smart serial

14. Refer to the exhibit. How many subnets are required to support the network that is shown?
3

15. What are three common methods for setting a UTP Ethernet port to MDI or MDIX operation? (Choose three.)
direct configuration of the device
the enabling of the mechanism to electrically swap the transmit and receive pairs
the automatic detection and negotiating of MDI/MDIX operation of the port

16. Which three statements are true about the role of routers in the network? (Choose three.)
They segment broadcast domains.
They interconnect different network technologies.
Each router interface requires a separate network or subnet.

17. Refer to the exhibit. A network administrator has decided to use packet capture software to evaluate all traffic from the student subnet on the way to the Internet. To ensure that all packets are captured, what network device should be used to connect the monitoring station to the network between R1 and R2?
hub

18. Refer to the exhibit. Assume that all devices are using default settings. How many subnets are required to address the topology that is shown?
1

19. Refer to the exhibit. Which three statements are true about the exhibited topology? (Choose three.)
Five broadcast domains are present.
Host B is using a crossover cable to connect to the router.
Five networks are shown.

20. To establish a console connection from a computer to a Cisco router, which cable wiring option would be used?
rollover cable

21. Refer to the exhibit. Which three statements identify the type of cabling that would be used in the segments that are shown? (Choose three.)
Segment 1 uses a patch cable.
Segment 3 uses horizontal cabling.
Segment 4 uses vertical cabling.

22. Refer to the exhibit. A network technician has been allocated the 192.168.1.0/24 private IP address range for use in the network that shown in the exhibit. Which subnet mask would be used to meet the host requirements for segment A of this internetwork?
255.255.255.224

CHAPTER 11

1. Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?
show interfaces

2. Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password 7 14141E0A1F17line console 0password 7 020507550A

3. Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?
RouterB(config)# enable secret class

RouterB(config)# line vty 0

RouterB(config-line)# password cisco

RouterB(config-line)# login

4. Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP address 192.168.2.2 represent?
IP assigned to the serial port on Router B
5. What command is used to change the default router name to Fontana?
Router(config)# hostname Fontana

6. The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)
Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
Sydney(config-if)# no shutdown
Sydney(config-if)# clock rate 56000

7. Refer to the exhibit. What additional command is required to allow remote access to this switch?
NA-SW1(config)# ip default-gateway address

8. When network services fail, which port is most often used to access a router for management purposes?
Console

9. A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a router to manage it. Which access method should be chosen?
SSH

10. In a Cisco router, when do changes made to the running-configuration take effect?
as the commands are entered

11. Refer to the exhibit. Which names correctly identify the CLI mode represented by the prompt for Switch-East4#? (Choose two.)
privileged executive mode
enable mode

12. Which three terms correctly define the forms of help available within the Cisco IOS? (Choose three.)
hot keys
context-sensitive
command override

13. Which combination of keys would be used at the CLI prompt to interrupt a ping or traceroute process?
Ctrl-Shift-6
14. Refer to the exhibit. What command will place the router into the correct mode to configure an appropriate interface to connect to a LAN?
UBAMA(config)# line vty 0 4

15. On a Cisco router, which interface would be used to make the initial configuration?
Console Port

16. Refer to the exhibit. A student is responsible for the IP addressing, configuration and connectivity testing of the network shown in the graphic. A ping from host B to host C results in a destination unreachable but a ping from host B to host A was successful. What two reasons could account for this failure based on the graphic and partial router output for the Dallas router? (Choose two.)
The S0/0/1 IP address of Dallas is improperly configured.
The clock rate is missing on the serial link between Dallas and NYC.

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