Inthe _________ protocol weavoid unnecessary transmissionby sending only frames that are corrupted. A) Stop-and-Wait ARQ B) Go-Back-N ARQ C) Selective-Repeat ARQ D) none of the above

Inthe _________ protocol weavoid unnecessary transmissionby sending only frames
that are corrupted.
A)
Stop-and-Wait ARQ
B)
Go-Back-N ARQ
C)
Selective-Repeat ARQ
D)
none of the above
by

1 Answer

Answer :

Selective-Repeat ARQ
by

Related questions

Inthe _____ Protocol, the sender sends its frames oneafter another with noregard to the receiver. A) Stop-and-Wait B) Simplest C) Go-Back-N ARQ D) Selective-Repeat ARQ

Description : Inthe _____ Protocol, the sender sends its frames oneafter another with noregard to the receiver. A) Stop-and-Wait B) Simplest C) Go-Back-N ARQ D) Selective-Repeat ARQ

Last Answer : Stop-and-Wait B) Simplest

Inthe _________Protocol, ifno acknowledgment for aframe has arrived, we resend all outstanding frames. A) Stop-and-Wait ARQ B) Go-Back-N ARQ C) Selective-Repeat ARQ D) none of the above

Description : Inthe _________Protocol, ifno acknowledgment for aframe has arrived, we resend all outstanding frames. A) Stop-and-Wait ARQ B) Go-Back-N ARQ C) Selective-Repeat ARQ D) none of the above

Last Answer : Go-Back-N ARQ

Inthe _____ Protocol, the sender sends one frame, stops until it receives confirmation from the receiver, and then sends the next frame. A) Stop-and-Wait B) Simplest C) Go-Back-N ARQ D) Selective-Repeat ARQ

Description : Inthe _____ Protocol, the sender sends one frame, stops until it receives confirmation from the receiver, and then sends the next frame. A) Stop-and-Wait B) Simplest C) Go-Back-N ARQ D) Selective-Repeat ARQ

Last Answer : Stop-and-Wait

The _________Protocol, addsa simple error control mechanism to the _______Protocol. A) Stop-and-Wait ARQ; Stop-and-Wait B) Go-Back-N ARQ; Stop-and-Wait C) Selective Repeat ARQ; Go-Back-N ARQ D) none of the above

Description : The _________Protocol, addsa simple error control mechanism to the _______Protocol. A) Stop-and-Wait ARQ; Stop-and-Wait B) Go-Back-N ARQ; Stop-and-Wait C) Selective Repeat ARQ; Go-Back-N ARQ D) none of the above

Last Answer : Go-Back-N ARQ; Stop-and-Wait

Which ARQ mechanism deals with the transmission of only damaged or lost frames despite the other multiple frames by increasing the efficiency & its utility in noisy channels? a. GoBackN ARQ b. Selective Repeat ARQ c. StopandWait ARQ d. All of the above

Description : Which ARQ mechanism deals with the transmission of only damaged or lost frames despite the other multiple frames by increasing the efficiency & its utility in noisy channels? a. GoBackN ARQ b. Selective Repeat ARQ c. StopandWait ARQ d. All of the above

Last Answer : b. Selective Repeat ARQ

In Go-Back-N window, when the timer of the packet times out, several packets have to be resent even some may have arrived safe. Whereas in Selective Repeat window, the sender resends ___________ A. Packet which are not lost B. Only those packets which are lost or corrupted C. Packet from starting D. All the packets

Description : In Go-Back-N window, when the timer of the packet times out, several packets have to be resent even some may have arrived safe. Whereas in Selective Repeat window, the sender resends ___________ A ... lost B. Only those packets which are lost or corrupted C. Packet from starting D. All the packets

Last Answer : B. Only those packets which are lost or corrupted

A sender uses the Stop-and-Wait ARQ protocol for reliable transmission of frames. Frames are of size 1000 bytes and the transmission rate at the sender is 80 Kbps (1Kbps = 1000 bits/second). Size of an acknowledgement is 100 bytes and the transmission rate at the receiver is 8 Kbps. The one-way propagation delay is 100 milliseconds. Assuming no frame is lost, the sender throughput is __________ bytes/second. a. 2500 b. 2000 c. 1500 d. 500

Description : A sender uses the Stop-and-Wait ARQ protocol for reliable transmission of frames. Frames are of size 1000 bytes and the transmission rate at the sender is 80 Kbps (1Kbps = 1000 bits/second). Size of ... is lost, the sender throughput is __________ bytes/second. a. 2500 b. 2000 c. 1500 d. 500

Last Answer : a. 2500

Which provision can resolve / overcome the shortcomings associated with duplication or failure condition of Stop and Wait Automatic Repeat Request protocol especially due to loss of data frames or non reception of acknowledgement? a. Provision of sequence number in the header of message b. Provision of checksum computation c. Both a & b d. None of the above

Description : Which provision can resolve / overcome the shortcomings associated with duplication or failure condition of Stop and Wait Automatic Repeat Request protocol especially due to loss of data frames or non reception ... message b. Provision of checksum computation c. Both a & b d. None of the above

Last Answer : Provision of sequence number in the header of message

In Stop-and-Wait ARQ, we use sequence numbers to number the frames. The sequence numbers are based on __________arithmetic. A) modulo-2 B) modulo-4 C) modulo-m D) none of the above

Description : In Stop-and-Wait ARQ, we use sequence numbers to number the frames. The sequence numbers are based on __________arithmetic. A) modulo-2 B) modulo-4 C) modulo-m D) none of the above

Last Answer : modulo-2

In Selective Repeat ARQ, if 5 is the number ofbits for the sequence number, then the maximum size of the receive window mustbe _____ A) 15 B) 16 C) 31 D) 1

Description : In Selective Repeat ARQ, if 5 is the number ofbits for the sequence number, then the maximum size of the receive window mustbe _____ A) 15 B) 16 C) 31 D) 1

Last Answer : 16

In Selective Repeat ARQ, if 5 is the number ofbits for the sequence number, then the maximum size of the send window must be _____ A) 15 B) 16 C) 31 D) 1

Description : In Selective Repeat ARQ, if 5 is the number ofbits for the sequence number, then the maximum size of the send window must be _____ A) 15 B) 16 C) 31 D) 1

Last Answer : 16

In Go-Back-N ARQ, if frames 4,5, and 6 are received successfully, thereceiver may send an ACK _______ to thesender. A) 5 B) 6 C) 7 D) any of theabove

Description : In Go-Back-N ARQ, if frames 4,5, and 6 are received successfully, thereceiver may send an ACK _______ to thesender. A) 5 B) 6 C) 7 D) any of theabove

Last Answer : 7

Which feature of Go Back N ARQ mechanism possesses an ability to assign the sliding window in the forward direction? a. Control Variables b. Sender Sliding Window c. Receiver Sliding Window d. Resending of frames

Description : Which feature of Go Back N ARQ mechanism possesses an ability to assign the sliding window in the forward direction? a. Control Variables b. Sender Sliding Window c. Receiver Sliding Window d. Resending of frames

Last Answer : b. Sender Sliding Window

Which feature of Go-Back-N ARQ mechanism possesses an ability to assign the sliding window in the forward diretion? A. Control Variables B. Sender Sliding Window C. Receiver Sliding Window D. Resending of frames

Description : Which feature of Go-Back-N ARQ mechanism possesses an ability to assign the sliding window in the forward diretion? A. Control Variables B. Sender Sliding Window C. Receiver Sliding Window D. Resending of frames

Last Answer : B. Sender Sliding Window

Which is the protocol that maps varying IP addresses to the Physical MAC Address of a machine in a LAN network? a. ARQ (Automatic Repeat Request) b. ARP (Address Resolution Protocol) c. SLIP (Serial Line Internet Protocol) d. PLIP (Parallel Line Internet Protocol)

Description : Which is the protocol that maps varying IP addresses to the Physical MAC Address of a machine in a LAN network? a. ARQ (Automatic Repeat Request) b. ARP (Address Resolution Protocol) c. SLIP (Serial Line Internet Protocol) d. PLIP (Parallel Line Internet Protocol)

Last Answer : b. ARP (Address Resolution Protocol)

Which is the protocol that maps varying IP addresses to the Physical MAC Address of a machine in a LAN network? A. ARQ Automatic Repeat Request B. ARP Address Resolution Protocol C. SLIP Serial Line Internet Protocol D. PLIP Parallel Line Internet Protocol

Description : Which is the protocol that maps varying IP addresses to the Physical MAC Address of a machine in a LAN network? A. ARQ Automatic Repeat Request B. ARP Address Resolution Protocol C. SLIP Serial Line Internet Protocol D. PLIP Parallel Line Internet Protocol

Last Answer : B. ARP Address Resolution Protocol

Both Go-Back-N and Selective-Repeat Protocols use a_________. A) sliding frame B) sliding windowC)sliding packetD)none of the above

Description : Both Go-Back-N and Selective-Repeat Protocols use a_________. A) sliding frame B) sliding window C) sliding packet D) none of the above

Last Answer : sliding window

For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed. A) exactly 10 B) less than10 C) more than 10 D) none of the above

Description : For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed. A) exactly 10 B) less than10 C) more than 10 D) none of the above

Last Answer : exactly 10

For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed A. exactly 10 B. less than 10 C. more than 10 D. none of the above

Description : For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed A. exactly 10 B. less than 10 C. more than 10 D. none of the above

Last Answer : B. High-level data link control

ARQ stands for _______. A) Automatic repeatquantization B) Automatic repeat request C) Automatic retransmissionrequest D) Acknowledge repeat request

Description : ARQ stands for _______. A) Automatic repeatquantization B) Automatic repeat request C) Automatic retransmissionrequest D) Acknowledge repeat request

Last Answer : Automatic repeat request

ARQ stands for __________ a. Automatic Repeat Request b. Automatic Request Repeat c. Application Repeat Request d. Application Request Repeat

Description : ARQ stands for __________ a. Automatic Repeat Request b. Automatic Request Repeat c. Application Repeat Request d. Application Request Repeat

Last Answer : a. Automatic Repeat Request

_________control inthe datalink layer is based on automatic repeat request, which is the retransmission of data. A) Flow B) Error C) Transmission D) none of the above

Description : _________control inthe datalink layer is based on automatic repeat request, which is the retransmission of data. A) Flow B) Error C) Transmission D) none of the above

Last Answer : Transmission

Inthe _______method, after thestation finds the line idle it sends or refrainfrom sending based on the outcome ofa random number generator. If the line is busy, it tries againA)nonpersistentB)1-persistentC)p-persistentD)none of the above

Description : Inthe _______method, after thestation finds the line idle it sends or refrainfrom sending based on the outcome ofa random number generator. If the line is busy, it tries again A) nonpersistent B) 1-persistent C) p-persistent D) none of the above

Last Answer : p-persistent

In a Go-Back-N ARQ, if the window size is 63,what is the range of sequence numbers? A) 0to 63 B) 0to 64 C) 1to 63 D) 1to 64

Description : In a Go-Back-N ARQ, if the window size is 63,what is the range of sequence numbers? A) 0to 63 B) 0to 64 C) 1to 63 D) 1to 64

Last Answer : 0to 63

In Go-Back-N ARQ, if 5 is the number of bits for thesequencenumber, then the maximum size of the receive window mustbe _____ A) 15 B) 16 C) 31 D) 1

Description : In Go-Back-N ARQ, if 5 is the number of bits for thesequencenumber, then the maximum size of the receive window mustbe _____ A) 15 B) 16 C) 31 D) 1

Last Answer : 1

In Go-Back-N ARQ, if 5 is the number of bits for thesequencenumber, then the maximum size of the send window must be _____ A) 15 B) 16 C) 31 D) 1

Description : In Go-Back-N ARQ, if 5 is the number of bits for thesequencenumber, then the maximum size of the send window must be _____ A) 15 B) 16 C) 31 D) 1

Last Answer : 31

In a Go-Back-N ARQ, if the window size is 63, what is the range of sequence numbers? A. 0 to 63 B. 0 to 64 C. 1 to 63 D. 1 to 64

Description : In a Go-Back-N ARQ, if the window size is 63, what is the range of sequence numbers? A. 0 to 63 B. 0 to 64 C. 1 to 63 D. 1 to 64

Last Answer : A. 0 to 63

The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometer is t seconds. Let R bits/second be the channelcapacity. Assuming that processing delay is negligible, the minimum number of bits for the sequence number field in a frame for maximum utilization, when the sliding window protocol used is: a. A b. B c. C d. D

Description : The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometer is t seconds. Let R bits/second be the channel capacity. Assuming that processing ... maximum utilization, when the sliding window protocol used is: a. A b. B c. C d. D

Last Answer : c. C

When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errorsd. all of the above

Description : When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above

Last Answer : only when no error occurs at the transmission level

When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above

Description : When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above

Last Answer : only when no error occurs at the transmission level

the maximum window size for data transmission using the selective reject protocol with n-bit frame sequence numbers is: a. 2^n b. 2^(n-1) c. 2^n – 1 d. 2^(n-2)

Description : the maximum window size for data transmission using the selective reject protocol with n-bit frame sequence numbers is: a. 2^n b. 2^(n-1) c. 2^n – 1 d. 2^(n-2)

Last Answer : b. 2^(n-1)

What will be the efficiency of a Stop and Wait protocol, if the transmission time for a frame is 20ns and the propagation time is 30ns? a. 20% b. 25% c. 40% d. 66%

Description : What will be the efficiency of a Stop and Wait protocol, if the transmission time for a frame is 20ns and the propagation time is 30ns? a. 20% b. 25% c. 40% d. 66%

Last Answer : b. 25%

Consider a link with packet loss probability of 0.2. What is the expected number of transmissions it would take to transfer 200 packets given that the stop and wait protocol is used? a. 125 b. 250 c. 225

Description : Consider a link with packet loss probability of 0.2. What is the expected number of transmissions it would take to transfer 200 packets given that the stop and wait protocol is used? a. 125 b. 250 c. 225

Last Answer : b. 250

Inthe _________ method, a special packet called a ______ circulates through the ring. A) reservation: control frame B) polling: poll request C) token passing: token D) none of the above

Description : Inthe _________ method, a special packet called a ______ circulates through the ring. A) reservation: control frame B) polling: poll request C) token passing: token D) none of the above

Last Answer : token passing: token

Inthe _________ method, after the station finds the lineidle, it sends its frame immediately. If the line isnot idle, it continuously senses theline until it finds it idle. A) nonpersistent B) 1-persistent C) p-persistent D) none of the above

Description : Inthe _________ method, after the station finds the lineidle, it sends its frame immediately. If the line isnot idle, it continuously senses theline until it finds it idle. A) nonpersistent B) 1-persistent C) p-persistent D) none of the above

Last Answer : 1-persistent

Hamzah needs to email a large file to a classmate. Why might he need to use file compression to do so? A. Email services often only let you send compressed data files. B. Compressed files are less likely to become corrupted when being transferred via email. C. He won't need to. All email providers let you send any files you like, regardless of size. D. Email services often have maximum file sizes that prevent you sending files that are too large.

Description : Hamzah needs to email a large file to a classmate. Why might he need to use file compression to do so? A. Email services often only let you send compressed data files. B. Compressed files are ... . D. Email services often have maximum file sizes that prevent you sending files that are too large.

Last Answer : D. Email services often have maximum file sizes that prevent you sending files that are too large.

n IPv4,an HLEN value ofdecimal10 means _______. A) there are 10bytes ofoptions B) there are 40bytes ofoptions C) there are 40bytes inthe header D) noneof the above

Description : n IPv4,an HLEN value ofdecimal10 means _______. A) there are 10bytes ofoptions B) there are 40bytes ofoptions C) there are 40bytes inthe header D) noneof the above

Last Answer : there are 40bytes inthe header

Which of the following is NOT true about User Datagram Protocol in transport layer?a. Works well in unidirectional communication, suitable for broadcast information. b. It does three way handshake before sending datagrams c. It provides datagrams, suitable for modeling other protocols such as in IP tunneling or Remote Procedure Call and the Network File System d. The lack of retransmission delays makes it suitable for real-time applications

Description : Which of the following is NOT true about User Datagram Protocol in transport layer? a. Works well in unidirectional communication, suitable for broadcast information. b. It does three way ... File System d. The lack of retransmission delays makes it suitable for real-time applications

Last Answer : b. It does three way handshake before sending datagrams

UDP packets are called as _________ a. Segments b. Checksum c. Frames d. Datagrams

Description : UDP packets are called as _________ a. Segments b. Checksum c. Frames d. Datagrams

Last Answer : d. Datagrams

The data link layer takes the packets from _________ and encapsulates them into frames for transmission. a) network layer b) physical layer c) transport layer d) application layer

Description : The data link layer takes the packets from _________ and encapsulates them into frames for transmission. a) network layer b) physical layer c) transport layer d) application layer

Last Answer : a) network layer

A ________receivesa signal and,before it becomes too weak or corrupted, regenerates the original bit pattern. It thensends the refreshed signal. A) passive hub B) repeater C) bridge D) router

Description : A ________receivesa signal and,before it becomes too weak or corrupted, regenerates the original bit pattern. It thensends the refreshed signal. A) passive hub B) repeater C) bridge D) router

Last Answer : repeater

MQTT is better than HTTP for sending and receiving data. a) True b) False 4. MQTT is _________ protocol. a) Machine to Machine b) Internet of Things c) Machine to Machine and Internet of Things d) Machine things

Description : MQTT is _________ protocol. a) Machine to Machine b) Internet of Things c) Machine to Machine and Internet of Things d) Machine things

Last Answer : c) Machine to Machine and Internet of Things

In modulo-11 arithmetic, we use only the integers inthe range ______, inclusive. A) 1to 10 B) 1to 11C) 0to 10 D) none of the above

Description : In modulo-11 arithmetic, we use only the integers inthe range ______, inclusive. A) 1to 10 B) 1to 11 C) 0to 10 D) none of the above

Last Answer : 0to 10

Which consequences are more likely to occur during the frame transmission in StopandWait ARQ mechanism? a. Loss of frame or an acknowledgementb. Delay in an acknowledgement c. Normal operation d. All of the above

Description : Which consequences are more likely to occur during the frame transmission in StopandWait ARQ mechanism? a. Loss of frame or an acknowledgement b. Delay in an acknowledgement c. Normal operation d. All of the above

Last Answer : d. All of the above

The function of ARQ in a network protocol is to: (A) Auto request (B) Acknowledge (C) Address request (D) Abort

Description : The function of ARQ in a network protocol is to: (A) Auto request (B) Acknowledge (C) Address request (D) Abort

Last Answer : (A) Auto request

IP is _________ datagram protocol. A) an unreliable B) a connectionless C) botha and b D) noneof the above

Description : IP is _________ datagram protocol. A) an unreliable B) a connectionless C) botha and b D) noneof the above

Last Answer : botha and b

ICMP is a _________ layer protocol. A) datalink B) transport C) network D) noneof the above

Description : ICMP is a _________ layer protocol. A) datalink B) transport C) network D) noneof the above

Last Answer : network

The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing. A) distancevector B) link state C) path vector D) none of the above

Description : The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing. A) distancevector B) link state C) path vector D) none of the above

Last Answer : distancevector

FCP stands for _________ a. Fiber Channel Protocol b. Field Channel Protocol c. Fast Channel Protocol d. Fiber Carrying Protocol

Description : FCP stands for _________ a. Fiber Channel Protocol b. Field Channel Protocol c. Fast Channel Protocol d. Fiber Carrying Protocol

Last Answer : a. Fiber Channel Protocol

DDP stands for _________ a. Datagram Delivery Protocol b. Device Delivery Protocol c. Datagram Device Protocol d. Device Datagram Protocol

Description : DDP stands for _________ a. Datagram Delivery Protocol b. Device Delivery Protocol c. Datagram Device Protocol d. Device Datagram Protocol

Last Answer : a. Datagram Delivery Protocol