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

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
by

2 Answers

Answer :

Stop-and-Wait ARQ; Stop-and-Wait
by

Answer :

Go-Back-N ARQ; Stop-and-Wait
by

Related questions

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 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

Description : 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

Last Answer : Selective-Repeat 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

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

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 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

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

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

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

Automatic repeat request error management mechanism is provided by ________ a. logical link control sublayer b. media access control sublayerc. network interface control sublayer d. application access control sublayer

Description : Automatic repeat request error management mechanism is provided by ________ a. logical link control sublayer b. media access control sublayer c. network interface control sublayer d. application access control sublayer

Last Answer : a. logical link control sublayer

Automatic repeat request error management mechanism is provided by ________ A. logical link control sublayer B. media access control sublayer C. network interface control sublayer D. application access control sublayer

Description : Automatic repeat request error management mechanism is provided by ________ A. logical link control sublayer B. media access control sublayer C. network interface control sublayer D. application access control sublayer

Last Answer : A. logical link control sublayer

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

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

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

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

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

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 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

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

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 most common protocol for point-to-pointaccess is the Point-to-Point Protocol (PPP), which is a _________protocol. A) bit-oriented B) byte-oriented C) character-oriented D) none of the above

Description : The most common protocol for point-to-pointaccess is the Point-to-Point Protocol (PPP), which is a _________protocol. A) bit-oriented B) byte-oriented C) character-oriented D) none of the above

Last Answer : byte-oriented

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

_________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

Which of the following refers to theterms "residual error rate"? A. the number of biterrors per twenty four hours of continuous operation onanasynchronous line B. The probability that one or moreerrors will be undetected whenan error detection scheme is used C. the probability thatone or more errors will bedetected when anerror detection mechanism is used D. signal tonoise ratio dividedby the ratio of energy perbit to noise per hertz E. None of the above

Description : Which of the following refers to theterms "residual error rate"? A. the number of biterrors per twenty four hours of continuous operation onanasynchronous line B. The probability that one or moreerrors ... tonoise ratio dividedby the ratio of energy perbit to noise per hertz E. None of the above

Last Answer : The probability that one or moreerrors will be undetected whenan error detection scheme is used

The probability thata singlebit will be inerror on a typical public telephone lineusing 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error ratefor a communicationline using 9-bit frames is approximately equal to A. 0.003 B. 0.009 C. 0.991 D. 0.999 E. None of the above

Description : The probability thata singlebit will be inerror on a typical public telephone lineusing 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error ratefor a communicationline using 9-bit frames is ... to A. 0.003 B. 0.009 C. 0.991 D. 0.999 E. None of the above

Last Answer : 0.009

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)

Which type of Sframe in HDLC exhibit the correspondence of last three bits [N(R)] by defining the negative acknowledgement (NAK) number with the code value of '01'? a. Receive ready b. Receive not ready c. Reject d. Selective Reject

Description : Which type of Sframe in HDLC exhibit the correspondence of last three bits [N(R)] by defining the negative acknowledgement (NAK) number with the code value of '01'? a. Receive ready b. Receive not ready c. Reject d. Selective Reject

Last Answer : c. Reject

ARQ is transmitted in the event of: (A) Loss of signal (B) Error in received data (C) Improve reliability (D) During time out

Description : ARQ is transmitted in the event of: (A) Loss of signal (B) Error in received data (C) Improve reliability (D) During time out

Last Answer : (B) Error in received data

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

Which of the following statement is False about the efficiency of the given channel? a. If we want to send big packets on the channel, then Stop and Wait is good choice. b. If length of packet increases, efficiency of channel also increases. c. Distance between sender and receiver is directly proportional to efficiency of channel. d. Efficient might be less if capacity of channel is high

Description : Which of the following statement is False about the efficiency of the given channel? a. If we want to send big packets on the channel, then Stop and Wait is good choice. b. If length ... is directly proportional to efficiency of channel. d. Efficient might be less if capacity of channel is high

Last Answer : Distance between sender and receiver is directly proportional to efficiency of channel.

Most packet switches use this principle ____________ a) Stop and wait b) Store and forward c) Store and wait d) Stop and forward

Description : Most packet switches use this principle ____________ a) Stop and wait b) Store and forward c) Store and wait d) Stop and forward

Last Answer : b) Store and forward

Which error detection method consists of just one redundant bit per data unit? A) Simple parity check B) Two-dimensionalparity check C) CRC D) Checksum

Description : Which error detection method consists of just one redundant bit per data unit? A) Simple parity check B) Two-dimensionalparity check C) CRC D) Checksum

Last Answer : Simple parity check

Which error detection method usesone's complement arithmetic? A) Simple parity check B) Two-dimensionalparity check C) CRC D) Checksum

Description : Which error detection method usesone's complement arithmetic? A) Simple parity check B) Two-dimensionalparity check C) CRC D) Checksum

Last Answer : Checksum

Which error detection method uses one's complement arithmetic? A. Simple parity check B. Two-dimensional parity check C. CRC D. Checksum

Description : Which error detection method uses one's complement arithmetic? A. Simple parity check B. Two-dimensional parity check C. CRC D. Checksum

Last Answer : D. Checksum

When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Description : When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Last Answer : a. Transmit the message twice

When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Description : When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Last Answer : a. Transmit the message twice

CRC stands for __________ a. cyclic redundancy check b. code repeat check c. code redundancy check d. cyclic repeat check

Description : CRC stands for __________ a. cyclic redundancy check b. code repeat check c. code redundancy check d. cyclic repeat check

Last Answer : a. cyclic redundancy check

CRC stands for __________ A. cyclic redundancy check B. code repeat check C. code redundancy check D. cyclic repeat check

Description : CRC stands for __________ A. cyclic redundancy check B. code repeat check C. code redundancy check D. cyclic repeat check

Last Answer : A. cyclic redundancy check

In ATM,______ is for packets requiring no sequencing and noerror control mechanism. A) AAL1 B) AAL2C)AAL3/4D)AAL5

Description : In ATM,______ is for packets requiring no sequencing and noerror control mechanism. A) AAL1 B) AAL2 C) AAL3/4 D) AAL5

Last Answer : AAL5

Which of the following statements about the role of the gut in shock and sepsis are true? A. Selective decontamination of the digestive tract with the use of oral antibiotics has been shown to reduce nosocomial pneumonias and to improve mortality rates. B. Enteral nutrition, as compared with parenteral nutrition, preserves the villus architecture of the gut. C. Gut dysfunction may be an effect of shock, but it may also contribute to the development of MODS by the mechanism of bacterial translocation. D. As compared with parenteral nutrition, enteral nutrition is associated with a reduction in septic morbidity.

Description : Which of the following statements about the role of the gut in shock and sepsis are true? A. Selective decontamination of the digestive tract with the use of oral antibiotics has been ... As compared with parenteral nutrition, enteral nutrition is associated with a reduction in septic morbidity.

Last Answer : Answer: BCD DISCUSSION: The gut has a vital role in the pathophysiology of shock. The splanchnic circulation is very vulnerable to the circulatory redistribution that occurs in shock, thus, gut ... , enteral feeding is more cost effective and is associated with a lower rate of septic morbidity