Networking Chapter 3 Which of the following describes the arrangement of network cabling between devices?

Chapter 3 Solutions

Review Questions

1. Which of the following describes the arrangement of network cabling between devices?

a. Logical topology

b. Networking technology

c. Physical topology

d. Media access method

2. Which of the following is an advantage of a star topology? (Choose all that apply.)

a. Allows faster technologies than a bus does

b. Requires less cabling than a bus

c. Centralized monitoring of network traffic

d. No single point of failure

3. Which topology is likely to be deployed in a WAN where there’s a central office and three

branch offices, and you want all traffic from the branch offices to go through the central office

network?

a. Ring

b. PMP

c. Mesh

d. Point-to–point

4. Which technology is likely to be implemented as a point–to-point physical topology?

a. Wi-Fi infrastructure mode

b. FDDI

c. Ethernet

d. Wireless bridge

5. Which of the following describes a hub-based Ethernet network?

a. Physical bus

b. Logical bus

c. Physical switching

d. Logical star

6. You’re configuring a WLAN in a long, narrow ballroom. The only place you can put the AP

is at the far end of the room. Which type of antenna should you use?

a. Unidirectional

b. Bidirectional

c. Omnidirectional

d. Semidirectional

7. Which of the following best describes a typical wireless LAN?

a. Logical ring topology

b. Logical switching topology

c. Logical bus topology

d. Logical star topology

8. Which of the following is a characteristic of a switched logical topology? (Choose all that

apply.)

a. Uses a physical bus topology

b. Creates dynamic connections

c. Sometimes called a shared-media topology

d. Uses a physical star topology

9. Which of the following is a characteristic of unshielded twisted-pair cabling? (Choose all that

apply.)

a. Consists of four wires

b. Commonly used in physical bus topologies

c. Has a distance limitation of 100 meters

d. Susceptible to electrical interference

10. Which of the following is a characteristic of fiber-optic cabling? (Choose all that apply.)

a. Can be used in electrically noisy environments

b. Requires only a single strand of fiber for network connections

c. Carries data over longer distances than UTP does

d. Lower bandwidth capability

11. Which topology most likely uses coaxial cabling?

b. Logical ring

d. Logical switching

12. Which of the following is true of a MAC address?

b. It’s sometimes called a logical address.

d. It’s composed of 12 bits.

13. Which type of Wi-Fi signal interference is most likely to be caused by leaves on trees?

b. Reflection

c. Refraction

14. Which of the following is a field of the most common Ethernet frame type? (Choose all that

apply.)

a. ARP trailer

e. MAC type

15. Which access method uses a “listen before sending” strategy?

a. Token passing

c. Token bus

16. Which of the following is true about full-duplex Ethernet? (Choose all that apply.)

d. It allows a physical bus to operate much faster.

17. Which of the following is defined by the extent to which signals in an Ethernet bus topology

network are propagated?

a. Physical domain

c. Broadcast domain

18. Which of the following is considered a property of Ethernet? (Choose all that apply.)

c. Guaranteed delivery system

d. Obsolete technology

19. Which of the following is true of IEEE 802.3an?

b. Uses Category 5 or higher cabling

c. Currently best for desktop computers

20. Which Ethernet standard can deliver up to 5 Gbps of bandwidth over Cat 5e and Cat 6

cabling?

b. 802.3ab

d. 802.3u

21. Which Wi-Fi standard can provide the highest bandwidth?

b. 802.11b

d. 802.11g

22. Which of the following is true about infrastructure mode in wireless networks? (Choose all

that apply.)

a. Best used for temporary networks

c. Resembles a physical bus and logical ring

23. How many channels can be used on an 802.11b network in North America?

b. 9

d. 13

24. Which media access method does Wi-Fi use?

b. Token bus

c. Demand priority

25. Which Wi-Fi standard uses beamforming to allow an AP to send data to multiple devices

simultaneously?

c. 802.11a

d. 802.11g

Hands-On Projects

Hands-On Project 3-1

Step 3: The link light on the port is lit.

Hands-On Project 3-2

Step 8: The speed should be 10 Mbps, and the Ethernet variety should be 10BaseT.

Critical Thinking

Challenge Lab 3-1

• To what type of device are the computers attached? The computers are attached to a logical bus

topology device, which is a hub.

Challenge Lab 3-2

• To which device in your extended star did you connect the AP and why? To provide the best access

for your wireless devices, the AP should be connected to the switch in the center of the extended

star.

Challenge Lab 3-3

• Approximately how many wireless networks did inSSIDer find? Answers will vary.

Case Project 3-1

• What changes in equipment are required to bring this company’s network up to date to solve the

shared-bandwidth problem? A switch, possibly working at a faster rate, such as 100 Mbps or 1

Gbps.

Case Project 3-2

• What type of topology should be used in this network? An extended star should be used, with a

switch as the central device.

• Will the network be peer to peer or server based? The discussion of EBiz.com’s requirements

Case Project 3-3

• Will the network be peer to peer or server based? The discussion of ENorm, Inc.’s requirements

mentions access to two separate centralized databases, so this network must be server based.

• How many computers will be attached to the network? Counting the servers, and assuming all 20