Question 1

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

Accepted Answer

In Frame Relay systems, end users are responsible for congestion control through techniques such as adjusting their transmission rates or using prioritization, while the network also has mechanisms in place to manage congestion through techniques such as traffic shaping or discarding excess traffic.

Question 2

In ATM,the basic transmission unit is the
A)frame.
B)cell.
C)packet.
D)circuit.
E)segment.

Accepted Answer

In ATM, the basic transmission unit is a fixed length cell of 53 bytes. This allows for efficient use of bandwidth and faster processing times compared to other options such as packets or frames. Therefore, the most accurate choice is B) cell.

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.

Accepted Answer

The increasing reliability of networks helps offset the inability of frame relay to do hop by hop error control.

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.

Accepted Answer

The technique employed by Frame Relay is common channel signaling, which allows multiple virtual circuits to share a single physical channel. In this technique, a single communication channel is shared by several logical connections or circuits using a packet-switching protocol, which is known as Frame Relay. Frame Relay network is an efficient, cost-effective, and flexible solution for data communication between different locations. In contrast, inband and outband signaling are used in traditional circuit-switching networks, and OSPF and spanning tree algorithm are used in routing protocols.

Question 5

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

Accepted Answer

Congestion recovery procedures aim to prevent further congestion and maintain network stability during high congestion situations, which typically occur when the network starts dropping 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.

Accepted Answer

ATM uses virtual connections to transfer data between endpoints. These connections are identified by a combination of two identifiers: one for the virtual path and one for the virtual channel. Therefore, ATM connections are identified by virtual channels within virtual paths.

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.

Accepted Answer

The use of virtual paths does not necessarily result in less work needed to set up a virtual path. In fact, in some cases, additional work may be required to configure and manage virtual paths. However, the other options listed (B, C, D, and E) are all advantages of using virtual paths.

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.

Accepted Answer

Virtual channel connections in ATM are not all switched. Some connections can be established as permanent virtual circuits (PVCs) which are essentially dedicated connections that are always available for use.

Question 9

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

Accepted Answer

Traffic leaving a network or internal telephone system is typically aggregated or multiplexed onto a smaller number of lines or channels for efficient transmission to the service provider, not separated into different lines.

Question 10

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

Accepted Answer

Congestion avoidance procedures aim to prevent network congestion by detecting and reacting to increasing queue lengths before actual congestion occurs.

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

Accepted Answer

X.25 has the lowest channel capacity, followed by ISDN, then Frame Relay, and ATM has the highest capacity.

Question 12

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

Accepted Answer

Selecting a WAN protocol for a business involves considering various factors such as the size of the business, the location of the branch offices, the type of data being transmitted, and the budget for the WAN. It is not a simple task and requires careful evaluation of multiple options.

Question 13

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

Accepted Answer

Both the cell loss priority in ATM and the DE bit in Frame Relay can be set to indicate that some cells or frames can be dropped in case of network congestion.

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.

Accepted Answer

Systems using common channel signaling typically employ a separate virtual channel for connection setup, the signaling channel. This allows signaling information to be separated from the data traffic, which flows on the 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.

Accepted Answer

The answer of All of the following are part of...

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.

Accepted Answer

The answer of The data contained within the Frame Relay...

Question 17

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

Accepted Answer

Frames with discard eligibility set are more likely to be removed from the network when congestion occurs, as they are marked as less critical than non-eligible frames.

Question 18

All Frame Relay nodes contain which of the following protocols?
A)LAPB
B)LAPD
C)LAPF Core
D)LAPF Control
E)CIR

Accepted Answer

The answer of All Frame Relay nodes contain which of...

Question 19

X.25 uses out-of-band signaling.

Accepted Answer

X.25 uses in-band signaling, where control and data signals share the same path.

Question 20

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

Accepted Answer

Frame Relay is a faster and more efficient protocol than X.25 for data transmission. It eliminates many of the X.25's error-checking and flow-control mechanisms, making it less complex and more efficient.

Quiz 13: Frame Relay and Atm

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

In ATM,the basic transmission unit is the

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

The technique employed by Frame Relay is called

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

The ATM connections are identified by

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

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

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

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

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

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

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

Systems using common channel signaling

All of the following are part of the LAPF core except

The data contained within the Frame Relay address field is the

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

All Frame Relay nodes contain which of the following protocols?

X.25 uses out-of-band signaling.

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