Question 1

____ means that a telephone company connects residential users to its network with fiber-optic cable.

Accepted Answer

A)  OLT 
B)  FITL 
C)  PON 
D)  FITH 
A)  OLT 
B)  FITL 
C)  PON 
D)  FITH D

Question 2

A(n) ____________________ uses TDM (time division multiplexing) over two wire to divide a single channel into multiple channels.

Accepted Answer

T-carrier

Question 3

List and describe the key strengths of SONET.

Accepted Answer

Its four key strengths are that it can integrate many other WAN technologies, it offers fast data transfer rates, it allows for simple link additions and removals, and it provides a high degree of fault tolerance.

Question 4

Define and describe a PSTN.

Accepted Answer

PSTN, which stands for Public Switched T

Question 5

____ is an updated, digital version of X.25 that also relies on packet switching.

Accepted Answer

A)  DSL 
B)  ISDN 
C)  Frame relay 
D)  ATM 
A)  DSL 
B)  ISDN 
C)  Frame relay 
D)  ATM

Question 6

Explain how a cable modem is utilized in broadband cable connections.

Accepted Answer

Broadband cable connections require that

Question 7

The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country.

Accepted Answer

A)  SLIP 
B)  POTS 
C)  PPP 
D)  PSTN 
A)  SLIP 
B)  POTS 
C)  PPP 
D)  PSTN

Question 8

Describe the most important advantage of SONET.

Accepted Answer

Perhaps the most important SONET advanta

Question 9

Because WAN connections require routers or other Layer 3 devices to connect locations, their links are not capable of carrying ____ protocols.

Accepted Answer

A)  open 
B)  standard 
C)  routable 
D)  nonroutable 
A)  open 
B)  standard 
C)  routable 
D)  nonroutable

Question 10

In a star topology, a single connection failure will halt all traffic between all sites.

Accepted Answer

A) True 
 B)False

Question 11

The speed of a T-carrier depends on its ____ level.

Accepted Answer

A)  signal 
B)  hierarchy 
C)  channel 
D)  traffic 
A)  signal 
B)  hierarchy 
C)  channel 
D)  traffic

Question 12

____________________ encapsulates incoming Ethernet or token ring frames, then converts them into ATM cells for transmission over an ATM network.

Accepted Answer

LANE (LAN

Question 13

WANs typically send data over ____ available communications networks.

Accepted Answer

A)  privately 
B)  publicly 
C)  individually 
D)  serially 
A)  privately 
B)  publicly 
C)  individually 
D)  serially

Question 14

ATM is a WAN technology that functions in the Data Link layer.

Accepted Answer

A) True 
 B)False

Question 15

Define a fractional T1 and explain why an organization might implement it.

Accepted Answer

A fractional T1 lease allows organizatio

Question 16

A(n) ____________________ node in synchronous communications recognizes that it should be receiving data by looking at the time on the clock.

Accepted Answer

The answer of A(n) ____________________ node in synchronous communications recognizes...

Question 17

____________________ are connections between network nodes that, although based on potentially disparate physical links, logically appear to be direct, dedicated links between those nodes.

Accepted Answer

The answer of ____________________ are connections between network nodes that,...

Question 18

Describe an important difference between frame relay and X.25.

Accepted Answer

An important difference between frame re

Question 19

SONET specifies framing and multiplexing techniques at the Physical layer.

Accepted Answer

A) True 
 B)False

Question 20

The individual geographic locations connected by a WAN are known as ____.

Accepted Answer

A)  WAN sites 
B)  WAN links 
C)  network service providers 
D)  central offices 
A)  WAN sites 
B)  WAN links 
C)  network service providers 
D)  central offices

____ means that a telephone company connects residential users to its network with fiber-optic cable.

A(n) ____________________ uses TDM (time division multiplexing) over two wire to divide a single channel into multiple channels.

List and describe the key strengths of SONET.

Define and describe a PSTN.

____ is an updated, digital version of X.25 that also relies on packet switching.

Explain how a cable modem is utilized in broadband cable connections.

The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country.

Describe the most important advantage of SONET.

Because WAN connections require routers or other Layer 3 devices to connect locations, their links are not capable of carrying ____ protocols.

In a star topology, a single connection failure will halt all traffic between all sites.

The speed of a T-carrier depends on its ____ level.

____________________ encapsulates incoming Ethernet or token ring frames, then converts them into ATM cells for transmission over an ATM network.

WANs typically send data over ____ available communications networks.

ATM is a WAN technology that functions in the Data Link layer.

Define a fractional T1 and explain why an organization might implement it.

A(n) ____________________ node in synchronous communications recognizes that it should be receiving data by looking at the time on the clock.

____________________ are connections between network nodes that, although based on potentially disparate physical links, logically appear to be direct, dedicated links between those nodes.

Describe an important difference between frame relay and X.25.

SONET specifies framing and multiplexing techniques at the Physical layer.

The individual geographic locations connected by a WAN are known as ____.

An Introduction to Networking

Network Standards and the OSI Model

Transmission Basics and Networking Media

Introduction to TCP/IP Protocols

Topologies and Ethernet Standards

Network Hardware, Switching, and Routing

Wireless Networking

In-Depth TCP/IP Networking

Virtual Networks and Remote Access

Network Security

Voice and Video Over IP

Troubleshooting Network Problems

Ensuring Integrity and Availability

Network Management

Filters

Exam 7: Wide Area Networks

____ means that a telephone company connects residential users to its network with fiber-optic cable.

A(n) ____________________ uses TDM (time division multiplexing) over two wire to divide a single channel into multiple channels.

List and describe the key strengths of SONET.

Define and describe a PSTN.

____ is an updated, digital version of X.25 that also relies on packet switching.

Explain how a cable modem is utilized in broadband cable connections.

The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country.

Describe the most important advantage of SONET.

Because WAN connections require routers or other Layer 3 devices to connect locations, their links are not capable of carrying ____ protocols.

In a star topology, a single connection failure will halt all traffic between all sites.

The speed of a T-carrier depends on its ____ level.

____________________ encapsulates incoming Ethernet or token ring frames, then converts them into ATM cells for transmission over an ATM network.

WANs typically send data over ____ available communications networks.

ATM is a WAN technology that functions in the Data Link layer.

Define a fractional T1 and explain why an organization might implement it.

A(n) ____________________ node in synchronous communications recognizes that it should be receiving data by looking at the time on the clock.

____________________ are connections between network nodes that, although based on potentially disparate physical links, logically appear to be direct, dedicated links between those nodes.

Describe an important difference between frame relay and X.25.

SONET specifies framing and multiplexing techniques at the Physical layer.

The individual geographic locations connected by a WAN are known as ____.

An Introduction to Networking

Network Standards and the OSI Model

Transmission Basics and Networking Media

Introduction to TCP/IP Protocols

Topologies and Ethernet Standards

Network Hardware, Switching, and Routing

Wireless Networking

In-Depth TCP/IP Networking

Virtual Networks and Remote Access

Network Security

Voice and Video Over IP

Troubleshooting Network Problems

Ensuring Integrity and Availability

Network Management

Filters