Deck 13: Frame Relay and Atm

Question 1

In Frame Relay systems congestion control is the responsibility both of end users and the network.

Answer 1

True

Question 2

In ATM,the basic transmission unit is the

A)frame.
B)cell.
C)packet.
D)circuit.
E)segment.

Answer 2

B

Question 3

The inability of frame relay to do hop by hop error control is offset by

A)its gigabit speeds.
B)its high overhead.
C)the extensive use of in-band signaling.
D)the increasing reliability of networks.
E)the extensive use of out-of-band signaling.

Answer 3

D

Question 4

The technique employed by Frame Relay is called

A)inband signaling.
B)outband signaling.
C)common channel signaling.
D)open shortest path first routing.
E)spanning tree algorithm.

Question 5

Congestion recovery procedures are used to preserve the network during instances of high congestion when the network has begun to drop frames.

Question 6

The ATM connections are identified by

A)virtual paths within data link identifiers.
B)virtual channels within virtual paths.
C)virtual circuits within virtual paths.
D)virtual paths within virtual channels.
E)virtual circuits within data link identifiers.

Question 7

When using ATM,which of the following is NOT one of the advantages for the use of virtual paths

A)Less work is needed to set a virtual path.
B)The network architecture is simplified.
C)The network performance and reliability is enhanced.
D)Channel connection setup times are reduced.
E)Enhanced network services are available for users.

Question 8

When using ATM,which of the following is NOT a characteristic of virtual channel connections?

A)Quality of service can be specified.
B)All connections are switched.
C)Sequencing is provided.
D)Traffic patterns can be monitored.
E)Dedicated channels can be provided.

Question 9

Traffic leaving a network or internal telephone system is separated into different lines and then sent to the service provider.

Question 10

Congestion avoidance procedures are employed when congestion starts to build up and increasing queue lengths are detected.

Question 11

Which of the following lists the items in order such that the associated channel capacities are increasing?

A)ATM,X.25,Frame Relay,and ISDN
B)ISDN,ATM,Frame Relay,and X.25.
C)ATM,Frame Relay,ISDN,and X.25
D)X.25,ISDN,Frame Relay,and ATM
E)ISDN,X.25,Frame Relay,and ATM

Question 12

Selecting a WAN protocol for a particular business is a fairly simple task given current pricing structures and business traffic patterns.

Question 13

The cell loss priority within the ATM cell is similar to the DE bit in Frame Relay.

Question 14

Systems using common channel signaling

A)employ a separate virtual channel for connection setup.
B)carry connection information within each frame.
C)use an expanded control field.
D)do not use channels.
E)also use common data channels.

Question 15

All of the following are part of the LAPF core except

A)frame delimiting.
B)error correction.
C)frame correction.
D)congestion control.
E)sequencing.

Question 16

The data contained within the Frame Relay address field is the

A)MAC address.
B)Virtual circuit identifier.
C)IP number.
D)Port number
E)Data link connection identifier.

Question 17

Frames whose discard eligibility is set due to committed information rates are less likely to be removed from the network.

Question 18

All Frame Relay nodes contain which of the following protocols?

A)LAPB
B)LAPD
C)LAPF Core
D)LAPF Control
E)CIR

Question 19

X.25 uses out-of-band signaling.

Question 20

Frame Relay is a more streamlined communication process than X.25.

Question 21

One of the reasons for ATMs high rate of speed in the fact that the protocol does no pre-connection setup and therefore there is no delay.

Question 22

Due to the fixed cell size,the processing of ATM cells is faster than protocols employing a variable length cell.

Question 23

ATM provides a flexible set of traffic control mechanisms that are based on the type of user data.

Question 24

Because of the high speeds involved and the small amount of overhead,when compared to Frame Relay,congestion control in ATM networks is more complex.