Сетевые устройства. Сетевое соединительное оборудование. Сетевая интерфейсная плата, страница 10

7. Because its new operations in Las Vegas have been so successful, the Dewie, Cheatam & Howe accounting firm has decided to open another local office in Phoenix and relocate some of its employees from the corporate main offices in Hawaii. A high-speed data link will be needed to connect each of the mainland locations to the main offices on the islands. The company wants to take advantage of its low-cost Tl rates to link both voice and data on the same carrier signal. What type of device should the firm use?

A. A repeater

B. A bridge

C. A gateway

D. A multiplexer

8. You need to connect two network segments that are 1,000 meters apart. Which of the following cable types can transmit data over 1,000 meters without using a repeater?

A. RG-58

B. Fiber optic

C. CAT3 UTP

D. CAT5 UTP

9. You run a 10Base5 network that has three segments, each separated by a repeater. The trunk ends are terminated by 50-ohm terminators, and there are six in all. How many terminators should be grounded?

A. Two

B. Three

C. Six

D. None

10. Which two of the following are functions of internetwork connectivity devices?

q  A. Connecting remote networks

q  B. Enabling networks with different protocols to communicate

q  C. Attaching devices to media

q  D. Extending the range of network segments

11. Which three of the following are advantages of active hubs?

q  A. They can regenerate network signals.

q  B. LANs ranges can be extended.

q  C. They are inexpensive.

q  D. They function as repeaters.

12. A Token Ring NIC can be equipped with which two of the following?

q  A. BNC connector

q  B. RJ-45 connector

q  C. DB-15 connector

q  D. AUI connector

13. Which two networks can use passive hubs?

q  A. Ethernet

q  B. ARCnet

q  C. Token ring

q  D. All of the above

14. Which two of the following features can add intelligence to a hub?

q  A. Signal regeneration

q  B. Network management protocols

q  C. Multiport repeaters

q  D. Switching circuitry

15. Which two statements are true of signal regenerating repeaters?

q  A. Repeaters simply amplify signals.

q  B. Repeaters extend network distances.

q  C. Repeaters regenerate signals.

q  D. Repeaters can be used to extend the range of a network indefinitely.

16. Which three statements are true of bridges?

q  A. Bridges amplify and regenerate signals.

q  B. Bridges can connect logically separate networks.

q  C. Bridges use device (MAC) address tables to route messages.

q  D. Bridges divide networks into smaller segments.

17. Why can the networks in an internetwork be considered logically separate?

A. Each network has its own address.

B. The networks are separated by a bridge.

C. The networks are separated by a router.

D. None of the above.

18. Which of the following connectivity devices functions at the data link layer?

A. Repeater

B. Router

C. Hub

D. Bridge

19. Which type of connector is commonly used by twisted-pair cable?

A. BNC

B. AUI

C. DIX

D. RJ-45

20. Which of the following is associated with a 10Base2 network?

A. Category 3, 4 or 5 UTP cable

B. RJ-11 connectors

C. BNC connectors

D. RJ-45 connectors

21. Which type of cable supports distances greater than 100 meters but cannot support a distance greater than 185 meters without a repeater?

A. 10BaseT using twisted-pair cable

B. 10Base2 using thinnet coaxial cable

C. 10Base5 using thicknet coaxial cable

D. Fiber-optic cable

22. What connectivity device typically functions at the Physical layer of the OSI model?

A. a router

B. a bridge

C. a repeater

D. a gateway

23. What type of connector is used with thinnet to connect to a network adapter?

A. an AUI connector

B. an RJ-45 connector

C. a BNC T connector

D. a BNC barrel connector

24. Which of the following is a characteristic of the 10BaseT topology?