Wide Area Networks

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Introduction to Networking
Network Infrastructure and Documentation
Addressing on Networks
Network Protocols and Routing
Network Cabling
Wireless Networking
Virtualization and Cloud Computing
Subnets and VLANs
Network Risk Management
Security in Network Design
Network Performance and Recovery
Wide Area Networks

All Questions

Question 1

Free

True/False

WANs connect nodes, such as workstations, servers, printers, and other devices, in a small geographical area on a single network.

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True

False

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Question 2

Free

True/False

In a frame relay WAN, the ISP typically has the data circuit terminating equipment (DCE).

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True

False

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Question 3

Free

True/False

In a public switched telephone network, lines are terminated at the central office.

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True

False

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Question 4

Free

True/False

DSL signals travel over telephone lines using the 300 to 3300 Hz frequency range.

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True

False

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Question 5

Free

True/False

DSL services require many subscribers to share the same local line, causing potential security concerns.

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True

False

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Question 6

True/False

Although MPLS can operate over Ethernet frames, it is more often used with other Layer 2 protocols, like those designed for WANs.

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True

False

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Question 7

True/False

Most satellites circle the Earth 22,300 miles above the equator in a geosynchronous orbit.

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True

False

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Question 8

True/False

CDMA (Code Division Multiple Access) is an open standard that is accepted and used worldwide.

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True

False

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Question 9

True/False

The word "synchronous" as used in the name of Synchronous Optical Network means that data being transmitted and received by nodes must conform to a timing scheme.

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True

False

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Question 10

Multiple Choice

What is the maximum throughput of a DS3 connection?

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1.544 Mbps

3.152 Mbps

44.736 Mbps

274.176 Mbps

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Question 11

Multiple Choice

Multiplexing enables a single T1 circuit to carry how many channels?

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Question 12

Multiple Choice

In an ISDN connection, what amount of throughput did a single B channel provide?

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32 Kbps

48 Kbps

64 Kbps

96 Kbps

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Question 13

Multiple Choice

What is the size of an ATM cell, including the header?

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48 bytes

53 bytes

64 bytes

84 bytes

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Question 14

Multiple Choice

Which of the following is an advantage of leasing a frame relay circuit over leasing a dedicated circuit?

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You are guaranteed to receive the maximum amount of bandwidth specified in the circuit contract

You pay only for the bandwidth you require.

The paths that your data will take are always known.

Frame relay is a newly established network technology with more features than other technology.

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Question 15

Multiple Choice

Of all the DSL standards, which is the most commonly in use today?

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ADSL

VDSL

SDSL

G.Lite

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Question 16

Multiple Choice

The DTE or endpoint device for a leased line is known as which device below?

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CSU/DSU

cable modem

DSL modem

ISDN modem

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Question 17

Multiple Choice

What OC level is primarily used as a regional ISP backbone, and occasionally by very large hospitals, universities, or other major enterprises?

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OC-3

OC-12

OC-48

OC-96

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Question 18

Multiple Choice

The C-Band utilized by satellites consists of what frequency range?

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1.5 - 2.7 GHz

2.7 - 3.5 GHz

3.4 - 6.7 GHz

12 - 18 GHz

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Question 19

Multiple Choice

In metro settings, end-to-end, carrier-grade Ethernet networks can be established via what protocol?

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Metro Carrier Transport

Carrier Ethernet Transport

Intra-city Ethernet

Ethernet SONET

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Question 20

Multiple Choice

Which statement regarding the use of cable modems is NOT accurate?

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Modems that utilize the DOCSIS 3.0 or 3.1 standard are backward compatible with older DOCSIS networks.

DOCSIS 3.1 allows for full duplex speeds up to 10 Gbps.

Cable modems only operate at the Physical layer of the OSI model.

Cable broadband provides a dedicated and continuous connection.

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