Chapter 3 Cabling and Topology 1. A __________ topology uses a single cable that

Question

Chapter 3

Cabling and Topology

1. A __________ topology uses a single cable that connects all of the computers in a line.

A. bus

B. ring

C. star

D. mesh

2. Which topology provides fault tolerance?

A. Bus

B. Ring

C. Star

D. Hub

3. Which network topology requires an intelligent device in the center of the design?

A. Mesh

B. Ring

C. Star

D. Point-to-multipoint

4. Which term describes a practical application of a topology and other critical technologies that provides a method to get data from one computer to another on a network?

A. Hybrid technology

B. Network technology

C. Segmented topology

D. Bus topology

5. Which type of cable is described as a central conductor wire that is surrounded by insulating materials and placed inside a braided metal shield?

A. Unshielded twisted pair

B. Shielded twisted pair

C. Coaxial

D. Fiber-optic

6. What is the most common use of coaxial cable in networking today?

A. Connecting computers in a small network

B. Connecting two computers in a point-to-point connection

C. Connecting a cable modem to an Internet Service Provider (ISP)

D. Connecting devices in a multipoint topology design

7. What is the only important measure of coax cabling?

A. Radio Grade (RG) rating

B. Ohm rating

C. Length

D. Amps

8. Which term refers to a relative measure of the resistance (or more precisely, characteristic impedance) on a cable?

A. Category (CAT) rating

B. Number of twisted pairs

C. Ohm rating

D. Radio grade (RG) rating

9. What is the meaning of the term “capacitance”?

A. How much a cable can resist the flow of electricity

B. How long it takes a wire to get a full charge

C. How much bandwidth the cable can support

D. How much throughput the cable is capable of providing

10. Which cable type suffers from electromagnetic interference (EMI)?

A. Unshielded twisted pair (UTP)

B. Shielded twisted pair (STP)

C. Fiber-optic

D. Coaxial

11. What is the minimum category rating of UTP cabling you would need for a network that runs at 1000 Mbps?

A. CAT 1

B. CAT 2

C. CAT 5

D. CAT 5e

12. UTP category ratings are based on what criteria?

A. The highest frequency the cable can handle

B. The maximum length of the cable segments

C. The number of devices that can be used on a network

D. The lowest bandwidth the cable can handle

13. Which category (CAT) of UTP cabling is the fastest?

A. CAT 3

B. CAT 5

C. CAT 5e

D. CAT 6

14. Which category rating uses a bandwidth of 250 MHz to accommodate 10000 Mbps?

A. CAT 3

B. CAT 5

C. CAT 6

D. CAT 6a

15. What distance can a signal travel on a fiber-optic cable?

A. 500 meters

B. One kilometer

C. 1000 meters

D. Tens of kilometers

16. Which type of cable works best for long-distance transmissions?

A. Coaxial

B. Unshielded twisted pair (UTP)

C. Shielded twisted pair (STP)

D. Fiber-optic

17. Which connector is used for UTP cabling on a network?

A. RF-11

B. BNC

C. RS-232

D. RJ-45

18. Which type of cable is uses a two-number designator consisting of core and cladding measurements?

A. Coaxial

B. Unshielded twisted pair (UTP)

C. Shielded twisted pair (STP)

D. Fiber-optic

19. How many cable fibers are normally required by almost all network technologies that use fiber-optic cable?

A. One

B. Two

C. Three

D. Four

20. What type of fiber-optic cable uses lasers to send signals?

A. Single-mode fiber (SMF)

B. Multimode fiber (MMF)

C. CAT 6

D. Triplex Fiber (TF)

21. A __________ cable that uses LEDs is known as multimode fiber (MMF)?

A. single-mode

B. category 6a (CAT 6a)

C. fiber-optic

D. 50 Ohm

22. Almost all multimode fiber cables transmit __________ wavelengths.

A. 600-nm

B. 850-nm

C. 1310-nm

D. 1550-nm

23. In response to the demand for two-pair cabling, manufacturers often connect two fibers together like a lamp cord to create the popular __________ fiber-optic cabling.

A. RG-8

B. duplex

C. modal

D. single-mode

24. Which connection type is limited to point-to-point topology and uses a 25-pin female DB type?

A. BNC

B. LC

C. Parallel

D. Serial

25. What cabling predates both networking and the personal computer?

A. Parallel

B. Twisted pair

C. Firewire

D. Serial

26. Which IEEE committee sets the standards for networking?

A. IEEE 802

B. IEEE 803

C. IEEE 805

D. IEEE 801.1

27. Which fire cable rating has no significant fire protection?

A. Cable with a riser rating

B. Cable with fiber rating

C. Cable with a plenum rating

D. Cable with a polyvinyl chloride (PVC) rating

28. To reduce fire hazards, most city ordinances require the use of __________ cable for network installations.

A. parallel

B. plenum

C. riser

D. fiber

29. The space between the acoustical tile ceiling in an office building and the actual concrete ceiling above is called the __________.

A. plenum

B. riser

C. attic

D. crawl area

30. Which IEEE subcommittee sets the standards for Wireless LAN networks?

A. 802.2

B. 802.3

C. 802.5

D. 802.11

31.Which statement is true of the Transport mode of IPSec?

A. Only the actual payload of an IP packet is encrypted.

B. The entire packet, including the header, is encrypted.

C. MS-CHAP authentication occurs.

D. The EAP-TLS protocol is used.

32.What is the name of Cisco’s proprietary operating system?

A. MAC IOS

B. Cisco IOS

C. NAT

33.Which organization assigns Autonomous System Numbers (ASNs)?

A. Internet Assigned Numbers Authority (IANA)

B. Autonomous System administrator

C. Internet Engineering Task Force (IETF)

D. Network administrator

D. EIGRP

34.Which protocol is Cisco’s proprietary protocol?

A. OSPF

B. IS-IS

C. EIGRP

D. BGP

Explanation / Answer

In bus topology each node is connected to a single cable, by the help of interface connectors. This central cable is the backbone of the network and is known as the bus. A Star topology gives great fault tolerance as any device/cable failure will not affect the rest of the network (unless the centralising device or server fails). A star topology has its own cable that connects to a central hub, or sometimes a switch, multipoint repeater, or even a Multistation Access Unit (MAU). Data passes through the hub to reach other devices on the network. Netwok technology Practical application of a topology and other critical technologies that provides a method to get data from one computer to another on a network Ex: 10BaseT, 1000BaseT, 10GBaseLX coaxial cable: Connecting a cable modem to an Internet Service Provider (ISP) ohm rating Ohm rating is relative measure of the resistance (precisely, characteristic impedance) on the cable Capacitance: How long it takes a wire to get a full charge coaxial CAT 5e: Max Frequency = 100MHZ, Max Bandwidth 1000 Mbps The highest frequency the cable can handle CAT 6 Max Frequency: 250 MHZ, Max Bandwidth: 10000Mbps D. Tens of kilometers fiber optic RJ-45 fiber optic 2 A. Single-mode fiber (SMF) fiber optic B. 850-nm single mode Parallel cables: Limited to point-to-point topology using a 25-pin female DB type connector commonly called a DB-25. Serial cabling: Predates both networking and the personal computer. IEEE 802 D. Cable with a polyvinyl chloride (PVC) rating plenum is the space between the acoustical tile ceiling in an office building and the actual concrete ceiling above; also used to indicate plenum-rated cable, which creates much less smoke and fumes when burned than other cabling types. 802.11 A. Only the actual payload of an IP packet is encrypted. Cisco IOS (Internetwork Operating System) is a proprietary operating system that runs on most Cisco Systems routers and switches. The core function of Cisco IOS is to enable data communications between network nodes. A. Internet Assigned Numbers Authority (IANA)

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