Description : In ________ error correction, the receiver correctserrors without requestingretransmission. A) backward B) onward C) forward D) none of the above
Last Answer : forward
Description : . ________ is the process in which the receiver tries to guess the message by using redundant bits A. Connection-Oriented Service B. Forward error correction C. both a and b D. Confirm
Last Answer : B. Forward error correction
Description : Inthe ________method, a stationthat has a frame tosend senses the line. If the line is idle, it sends immediately. If theline is not idle, it waits a random amount of time and then senses the line again. A) nonpersistent B) 1-persistent C) p-persistent D) none of the above
Last Answer : nonpersistent
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
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
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
Description : In IPv6, the _______ field inthe baseheader and thesender IP address combineto indicate aunique path identifier for aspecific flow of data. A) flow label B) nextheader C) hoplimit D) destination IP address
Last Answer : flow label
Description : If the sender is a host and wants tosend a packet toanotherhost on another network, the logical address that must be mapped to a physical address is ______. A) thedestination IP address in the datagram ... the IP address of therouter found inthe routing table C) either a or b D) noneof the above
Last Answer : the IP address of therouter found inthe routing table
Description : f the sender is a host and wants tosend a packet toanotherhost on the samenetwork, the logical address that must be mapped to a physical address is ______. A) thedestination IP address in the datagram ... the IP address of therouter found inthe routing table C) either a or b D) noneof the above
Last Answer : hedestination IP address in the datagram header
Description : . In ______ APS, there is one working line and one protection line. Thedata arenormally senton the working line until it fails. A) one-plus-one B) one-to-one C) one-to-many D) none of the above
Last Answer : one-to-one
Description : Frame Relay has_______. A) only the physical layer B) only thedata link C) the physical and data link layers D) the physical, data link, andnetwork layers
Last Answer : the physical and data link layers
Description : The ability of a database togrow as thedata tracking needs grow is its __________. A) scalability B) expandability C) maintainability D) platform-independence
Last Answer : scalability
Description : The synchronous modems are more costly than the asynchronous modemsbecause A. they produce largevolumeof data B. they contain clock recovery circuits C. they transmit thedata with stop and start bits. D. they operate witha largerbandwidth E. None of the above
Last Answer : they contain clock recovery circuits
Description : The technique in which a congested node stops receiving data from the immediate upstream node or nodes is called as _______ A. Admission policy B. Backpressure C. Forward signaling D. Backward signaling
Last Answer : B. Backpressure
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
Description : The subnet gets increasingly loaded with packets causing increase in delay in the delivery of packets, which can lead to more retransmission, and ultimately increasing more and more traffic. This is a concept called as _________ A. blockage B. Traffic jam. C. Congestion D. both a and b
Last Answer : C. Congestion
Description : In computer networks _________ is a characteristic that a flow needs where Lack of it means losing a packet or acknowledgment, which entails retransmission. A. Reliability B. Delay C. Jitter D. Bandwidth
Last Answer : A. Reliability
Description : This modem standard has a speed of 28.8k and has error-correction features. A. V.42 B. V.32bis C. V.90 D. V.34
Last Answer : V.42
Description : A best-effort delivery service suchas IPv4 includes _______. A) error checking B) error correction C) datagram acknowledgment D) noneof the above
Last Answer : noneof the above
Description : SSL is not responsible for a. Mutual authentication of client & server b. Secret communication c. Data Integrity protection d. Error detection and correction
Last Answer : d. Error detection and correction
Description : Write short notes on error correction.
Last Answer : It is the mechanism to correct the errors and it can be handled in 2 ways. ∙ When an error is discovered, receiver can have the sender retransmit the entire data unit. ∙ A receiver can use an error correcting coder, which automatically corrects certain errors.
Description : Define Error Detection and Correction. Mention the types of errors.
Last Answer : Data can be corrupted during transmission. For reliable communication, errors must be detected and corrected. Single bit error: The only one bit of a given data unit (such as byte character/data unit or packet) is ... error: 2 or more bits in the data unit have changed from 1 to 0 from 0 to 1.
Description : To guarantee correction of upto t errors, the minimum Hamming distance d min in a block code must be ________. a. t+1 b. t−2 c. 2t−1 d. 2t+1
Last Answer : d. 2t+1
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
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
Description : Block coding can help in _______at the receiver. A) Synchronization B) Error detection C) Attenuation D) (a) and (b)
Last Answer : (a) and (b)
Description : The term ________ means that IP provides no error checking or tracking. IP assumes the unreliabilityof the underlying layers and does its best to get a transmission throughto its destination,but with ... ) reliable delivery B) connection-oriented delivery C) best-effort delivery D) noneof the above
Last Answer : best-effort delivery
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
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
Description : . The _____of errors is more difficult than the ______. A) correction; detection B) detection; correction C) creation; correction D) creation;detection
Last Answer : correction; detection
Description : To guarantee correction ofup to 5 errors in all cases, the minimum Hamming distance in a block code must be________. A) 5 B) 6 C) 11 D) none of the above
Last Answer : 11
Description : To make SONET backward-compatible with the current hierarchy, its framedesign includes asystem of. A) OCs B) STMs C) STSs D) VTs
Last Answer : VTs
Description : Can I swipe forward and backward when browsing the web on iPad mini?
Last Answer : That depends on the website you are viewing. A lot of sites now have mobile versions that are made to fit perfectly with your devices screen. So, only swiping up and down are necessary. This is so you can ... . But, if it is not a mobile site, then you can swipe in any direction as you please.
Description : Have you ever come accross an online video that doesn't have a bar that makes it go forward or backward?
Last Answer : yeah, youtube.
Description : I am a five-digit whole number, read the same forward, backward and upside down. My second digit is half my third digit; my fifth digit is the product of my first and last digits; and the sum of my whole is ten. What am I? -Riddles
Last Answer : 10801
Description : Forward I catch fish, backward I am the tenth of numbers. What am I? -Riddles
Last Answer : Net.
Description : I am a word of five; spelled and read the same backward and forward; the mother of all takes her position at the center of me. My first and last letters are found in letters and flatters. What am I? -Riddles
Last Answer : I am 'level'.
Description : I am a word of three letters. I am spelt the same backward and forward; turn me upside down, I will become your mother. What am I? -Riddles
Last Answer : WOW.
Description : Forward I mean something past, backward I am now. What am I? -Riddles
Last Answer : Won.
Description : Forward I am an animal, but backward I am one who no man can ever see. What am I? -Riddles
Last Answer : I am a dog.
Description : What word can be written forward, backward or upside down, and can still be read from left to right? -Riddles
Last Answer : NOON.
Description : Donny was driving his semi under an overpass when suddenly he came to a screeching halt. Donny wasn't paying enough attention and inadvertently drove under the overpass that was just barely as high as his ... how he could easily get the semi out from under the bridge. What did he suggest? -Riddles
Last Answer : He told Don to let some air out of his tires. This would make the truck lower and allow him to pass through.
Description : Forward I am heavy, but backward I am not.What am I? -Riddles
Last Answer : The word Ton.
Description : What 4-letter word can be written forward, backward or upside down, and can still be read from left to right? -Riddles
Description : when creating your comic strip, how do you move images forward or backward in the space? -General Knowledge
Last Answer : When creating your comic strip, you move images forward in the space.
Last Answer : NOON is the 4-letter word can be written forward, backward or upside down, and can still be read from left to right.
Description : Forward I am heavy, but backward I am not. What am I? -Riddles
Last Answer : I am the word "not''.
Description : If the forward rate constant of reversible reaction is 0.16 and backward rate constant is `4xx10^(4)` , then the equilibrum constant will be .
Last Answer : If the forward rate constant of reversible reaction is 0.16 and backward rate constant is `4xx10^(4)` , then the ... C. `4xx10^(-6)` D. `4xx10^(-5)`
Description : The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is called Equilibrium state. In a chemical equilibrium, the following properties remain unchanged with time. Pressure, Temperature, density, color Pressure, Temperature, density, color
Last Answer : Who proposed law of mass action ?