Question 1

The simplest network topology is:
A) mesh
B) ring
C) point-to-point
D) multipoint
E) bus

Accepted Answer

The simplest network topology is point-to-point, which directly connects two nodes without any additional networking equipment or infrastructure.

Question 2

Bus topology is rarely used for anything except ________.

Accepted Answer

LANs

Question 3

A group of data communications devices such as computers, file servers, printers, and an e-mail server that are tied together allowing each to share network resources is referred to as a:
A) LAN
B) WAN
C) DCCD
D) DDS

Accepted Answer

A LAN (Local Area Network) is a network that connects computers and devices in a limited geographical area such as a home, school, office building, or closely positioned group of buildings, allowing them to share resources and information.

Question 4

Ethernet uses a mesh topology.

Accepted Answer

Ethernet typically uses a bus or star topology, not a mesh topology.

Question 5

The physical cable used to connect Ethernet LANs varies depending on all of the following except:
A) structure of the building or buildings
B) level of maintenance required
C) distance the signal has to travel
D) number of devices connecting to the network
E) amount of traffic expected

Accepted Answer

The level of maintenance required does not directly influence the choice of physical cable for Ethernet LANs. The other factors, such as building structure, signal distance, number of devices, and expected traffic, can affect the choice of cable type.

Question 6

The most important criteria to use in deciding which type of medium to use to connect Ethernet LANs is the distance between the devices.

Accepted Answer

The distance between devices is a crucial factor in deciding the type of medium for Ethernet LANs because different media types support different maximum distances and bandwidth capabilities.

Question 7

Token ring LANs are configured logically as a ring, but physically as a(n) ________.

Accepted Answer

The answer of Token ring LANs are configured logically as...

Question 8

Token ring LANs have diminished in popularity because:
A) each time a new device is added to the LAN or taken off the LAN, service to all devices on the LAN is disrupted
B) only eight devices are allowed per MSAU, fewer than the thirty devices per segment on the Ethernet LAN
C) both of the above
D) neither of the above

Accepted Answer

Token Ring LANs have seen a decline in popularity due to both the disruption caused by adding or removing devices and the limitation on the number of devices per MSAU compared to Ethernet LANs.

Question 9

Token ring LANs are as popular as ever.

Accepted Answer

Token ring LANs have largely been replaced by faster, more efficient technologies such as Ethernet, making them far less popular in modern network environments.

Question 10

The purpose of the token in token ring topology is to ensure that the network is fully utilized while reducing the possibility of contention between workstations.

Accepted Answer

In a token ring topology, the token is a special data packet that circulates around the network; only the workstation that holds the token can send data at any given time. This mechanism ensures orderly access to the network, maximizing utilization while minimizing the chance of data collisions or contention among workstations.

Question 11

Which of the following is a device used at the edge of the network to aggregate DSL circuits together onto one ingress circuit that connects to the central switch site?
A) RAS
B) DSLAM
C) ATM access concentrators
D) FRAD

Accepted Answer

DSLAM (Digital Subscriber Line Access Multiplexer) is the device used at the edge of the network to aggregate multiple DSL connections from users into a single, high-capacity connection to the Internet or another network. It plays a crucial role in providing broadband services to DSL subscribers.

Question 12

The purpose of a(n) ________ is to convert a digital signal into an analog signal.

Accepted Answer

The answer of The purpose of a(n) ________ is to...

Question 13

DSL lines terminate into DSL modems at the customer premises the same way that analog line modems terminate, the key difference between the two technologies being that the ________ modem is always on.

Accepted Answer

The answer of DSL lines terminate into DSL modems at...

Question 14

A channel service unit (CSU) or digital service unit (DSU) is used to connect digital circuits from the ________ to the computing device defined as the DTE.

Accepted Answer

The answer of A channel service unit (CSU) or digital...

Question 15

The real advantage that DSL provides is the increased bps rate obtained on the standard copper pair.

Accepted Answer

DSL (Digital Subscriber Line) technology allows for high-speed data transmission over the existing copper telephone lines without interfering with voice service, significantly increasing the bits per second (bps) rate compared to traditional dial-up connections.

Question 16

Which of the following protocols has emerged as the new darling in the access network?
A) ATM
B) IP
C) Ethernet
D) SONET
E) ISDN

Accepted Answer

Ethernet has become the dominant technology for local area networks (LANs) and is increasingly being used in wider network applications, including access networks, due to its simplicity, cost-effectiveness, and high-speed capabilities.

Question 17

How many TDM channels fit into one Fast Ethernet circuit?
A) 24
B) 28
C) 36
D) 18
E) None of the above

Accepted Answer

Fast Ethernet has a bandwidth of 100 Mbps, while TDM channels' bandwidth can vary widely depending on the specific type and configuration, making it impossible to determine how many TDM channels fit into one Fast Ethernet circuit without more specific information about the TDM channels in question.

Question 18

The bps rate of a GigE circuit is ________.

Accepted Answer

The answer of The bps rate of a GigE circuit...

Question 19

The bps rate of a FastE circuit is ________.

Accepted Answer

The answer of The bps rate of a FastE circuit...

Question 20

Voice over IP rides across the network on a ________ pipe.

Accepted Answer

The answer of Voice over IP rides across the network...

Quiz 17: Access Network & LAN

The simplest network topology is:

Bus topology is rarely used for anything except ________.

A group of data communications devices such as computers, file servers, printers, and an e-mail server that are tied together allowing each to share network resources is referred to as a: