CertiGuide to Network+  9  Appendix A: Answers to Success Questions and Real World Exam Questions

Chapter 0001: LAN Cabling Answers 1 Chapter 0011: Network Hardware Answers

1. Why is there a limit to the number of MAUs that can be connected together in a standard Token-ring network?

A. Too many MAUs would exceed the cable limits imposed by the Token Ring specification

B. Too many MAUs would create too large of a collision domain for communications to take place

C. Too many MAUs require more electricity than the devices can support

D. Too many devices connected through MAUs requires more time to get control of the token, and communications become unacceptable

E. There is no limit to the number of MAUs a token ring network can support

Explanation: As the length of the ring increases, by adding more devices into more MAUs, no one device is going to gain control of the token often enough to communicate within reasonable amounts of time.

& Domain 1.2: Specify the main features of 802.2 (LLC), 802.3 (Ethernet), 802.5 (token Ring), 802.11b (wireless) and FDDI networking technologies, including speed, access, method, topologies, media.

2. The IEEE 802.3 standard helps define _______.

A. Token Bus

B. Token Ring

C. ATM

D. Ethernet

E. SLIP

Explanation: Check out the IEEE 802.x and OSI model layer definitions. 802.3, for instance, spells out how Ethernet technology operates. 802.5 defines Token Rings. All of the above, with the exception of the SLIP protocol, occurs at the Data Link layer of the OSI model.

& Domain 1.2: Specify the main features of 802.2 (LLC), 802.3 (Ethernet) 802.5 (token ring), 802.11 (wireless) and FDDI networking technologies, including: Speed, Access, Method, Topology, Media.

3. The _______ IEEE standard defines MAC addresses for Token Ring networks.

802.5

Explanation: The 802.5 IEEE standard defines MAC addresses for Token Ring networks. These standards were conceived in February, 1980 (or '80/2) and define how Token Ring networks are configured.

& Domain 1.2: Specify the main features of 802.2 (LLC), 802.3 (Ethernet) 802.5 (token ring), 802.11 (wireless) and FDDI networking technologies, including: Speed, Access, Method, Topology, Media.

4. You are creating a network design for a firm that requires the bandwidth to be shared equally, and performance degrades gracefully under load. Given these requirements, you select?

A. 802.3

B. 802.5

C. 802.7

D. 802.15

5. Logical Link Control is defined with

A. 802.1

B. 802.2

C. 802.3

D. 802.4

6. VG AnyLAN is defined by

A. 802.1

B. 802.5

C. 802.11

D. 802.12

7. IDSN is defined by

A. 802.1

B. 802.3

C. 802.6

D. 802.9

8. Wireless networking deined by

A. 802.1

B. 802.11

C. 802.3

D. 802.4

9. Metropolian Area Networking (MAN) is defined in

A. 802.5

B. 802.6

C. 802.7

D. 802.8

10. Fiber-Optic LAN is defined in

A. 802.4

B. 802.5

C. 802.7

D. 802.8

11. The ___________ layer is responible for end-to-end control and error correction.

A. Layer 4 (Transport)

B. Layer 5 (session)

C. Layer 6 (Presentation)

D. Layer 7 Application

12. When encypting data for a VPN, this typically occurs at layer ______

A. Layer 7 (Application)

B. Layer 6 (Presentation)

C. Layer 5 (Session)

D. Layer 4 (Transport)

13. Physical addresses, for example MAC addresses that are 'hardwired' are used by

A. Layer 7 (Application)

B. Layer 5 (Session)

C. Layer 3 (Network)

D. Layer 1 (Physical)

14. 802.11b uses the ________ access method.

A. CSMA/CD

B. CSMA/CA

C. Token Ring

D. Cell

E. Packet

Explanation: The extra overhead of creating a clear channel before beginning a transmission is more than offset by broadcasting data without collisions.

& Domain 1.2: Specify the main features of 802.2 (LLC), 802.3 (Ethernet) 802.5 (token ring), 802.11 (wireless) and FDDI networking technologies, including: Speed, Access, Method, Topology, Media

15. Gigabit Ethernet can run on what category of copper cable?

A. Cat 1

B. Cat 3

C. Cat 5

D. Type 3

E. No choice is correct. It requires Cat5e or better

Explanation: If the cable installation meets TIA/EIA 568-A (Cat5) specifications, it should run 1000Base-T or Gigabit Ethernet.

& Domain 1.3: Specify the characteristics with (e.g., speed, plant, topology, cable type, etc.) of the following: 802.3 (Ethernet) standards, 10 Base-T, 100 Base-TX, 10 Base2, 10Base5, 100 Base-FX, Gigabit Ethernet.

Chapter 0001: LAN Cabling Answers 1 Chapter 0011: Network Hardware Answers