Description : Let G(x) be the generator polynomial used for CRC checking. What is the condition that should be satisfied by G(x) to detect odd number of bits in error? a. G(x) contains more than two terms b. G(x) does ... exceeding the frame length c. 1+x is a factor of G(x) d. G(x) has an odd number of terms
Last Answer : c. 1+x is a factor of G(x)
Description : Let G(x) be generator polynomial used for CRC checking. The condition that should be satisfied by G(x) to correct odd numbered error bits, will be: (1) (1+x) is factor of G(x) (2) (1-x) is factor of G(x) (3) (1+x2) is factor of G(x) (4) x is factor of G(x)
Last Answer : (1+x) is factor of G(x)
Description : Find the transmitted code if the frame is (MSB) 1101011011 (LSB) and generator polynomial is x4 + x + 1. A. 1101011011 1110 B. 1101011111 1110 C. 1101011011 1111 D. 1101011011
Last Answer : A. 1101011011 1110
Description : Which of the following is associated with error detector? a. Odd parity bit b. Even parity bit c. Both of the above d. None of above
Last Answer : Both of the above
Description : While transmitting odd-parity coded symbols, the number of zeros in each symbol is a. odd b. even c. a and b both d. unknown
Last Answer : unknown
Description : A simpleparity-check code can detect__________ errors. A) an even-number of B) two C) no errors D) an odd-number of
Last Answer : an odd-number of
Description : _______ can detect burst error of length less than or equal to degree of the polynomial and detects burst errors that affect odd number of bits. a. Hamming Code b. CRC c. VRC d. None of the above
Last Answer : b. CRC
Description : How many bytes of data can be sent in 15 seconds over a serial link with baud rate of 9600 in asynchronous mode with odd parity and two stop bits in the frame? a. 10,000 bytes b. 12,000 bytes c. 15,000 bytes d. 27,000 bytes
Last Answer : b. 12,000 bytes
Description : A simple parity-check code can detect __________ errors A. an even-number of B. two C. no errors D. an odd-number of
Last Answer : D. an odd-number of
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
Description : The divisor in a cyclic code is normally called the _________. A) degree B) generator C) redundancy D) none of the above
Last Answer : generator
Description : The RTS and CTS frames in CSMA/CA ____ solvethe hidden stationproblem. The RTS and CTS frames in CSMA/CA ____ solve the exposed station problem. A) can; cannot B) cannot; can C) can; can D) cannot; cannot
Last Answer : can; cannot
Description : We candivide today's networks into ____ broad categories. A) four B) three C) five D) two
Last Answer : three
Description : We candivide ____ into two different schemes: synchronousor statistical. A) FDM B) TDM C) WDM D) none of the above
Last Answer : TDM
Description : ____ is designed to use thehigh bandwidthcapabilityof fiber-optic cable. A) FDM B) TDM C) WDM D) None of the above
Last Answer : WDM
Description : In a multiplexed system,__ lines share thebandwidthof ____ link. A) 1; n B) 1; 1 C) n; 1 D) n; n
Last Answer : n; 1
Description : The signal rate is sometimes called the ____ rate. A) baud B) bit C) signal D) none of the above
Last Answer : baud
Description : ______ finds the value of thesignal amplitudefor eachsample; ____ finds the change from the previous sample. A) DM; PCM B) PCM; DM C) DM; CM D) none of the abov
Last Answer : PCM; DM
Description : In IPv6,____ address defines a groupof computers with addresses that have thesame prefix. A) aunicast B) a multicast C) an anycast D) none of the above
Last Answer : an anycast
Description : RPF guarantees that eachnetwork receives only ____ of the multicast packet. A) one copy B) two copies C) a or b D) none of the above
Last Answer : none of the above
Description : ____ are special-interest groups that quickly test, evaluate, andstandardize new technologies. A) Forums B) Regulatory agencies C) Standards organizations D) All of theabove
Last Answer : Forums
Description : Application layer protocol defines ____ a.types of messages exchanged b.message format, syntax and semantics c.rules for when and how processes send and respond to messages d.all of the mentioned
Last Answer : d.all of the mentioned
Description : The ____ layer establishes, maintains, and synchronizes the interaction between communicating systems. a. network b. transport c. session d. presentation
Last Answer : c. session
Description : The ____ layer is the network dialog controller. a. network b. transport c. session d. presentation
Description : User datagram protocol is called connectionless because _____________ a. all UDP packets are treated independently by transport layer b. it sends data as a stream of related packets c. it is received ... order d. it sends data very quickly Answer: Option(a) 4. Transmission control protocol ____
Last Answer : a. all UDP packets are treated independently by transport layer
Description : The client code recognizes the SSL request and establishes a connection through TCP port ____ to the SSL code on the server A. 1023 B. 402 C. 443 D. 8080
Last Answer : C. 443
Description : The ____ namespace is based on a hierarchical and logical tree structure A. DNS B. Address C. table D. both a and b
Last Answer : A. DNS
Description : The sender SMTP establishes a TCP connection with the destination SMTP and then waits for the server to send a ____ Service ready message.. A. 420 B. 320 C. 220 D. 120
Last Answer : C. 220
Description : In FTP, the well-known port ____ is used for the control connection and the well-known port ________ for the data connection A. 21; 22 B. 21; 20 C. 20; 21 D. none of the above
Last Answer : B. 21; 20
Description : Figure out the odd statement about ceramics in the following (a) Good insulators of heat and electricity (b) Usually less desire than metals (c) Ductile in nature (d) Contains both metallic and nonmetallic elements
Last Answer : (c) Ductile in nature
Description : A small or intelligent device is so called because it contains within it a a. Computer b. Microcomputer c. Programmable d. Sensor
Last Answer : Sensor
Description : The system unit of a personal computer typically contains all of the following except: a. Microprocessor b. Disk controller c. Serial interface d. Modem
Last Answer : Modem
Description : A floppy disk contains a. Circular tracks only b. Sectors only c. Both circular tracks and sectors d. All of the above
Last Answer : Both circular tracks and sectors
Description : Which of the following statement is correct? a. terminal section of a synchronous modem contains the scrambler b. receiver section of a synchronous modem contains the scrambler c. transmission section of ... d. control section of a synchronous modem contains the scrambler e. none of the above
Last Answer : transmission section of a synchronous modem contains the scrambler
Description : In the Ethernet frame, the_______field contains error detection information. A) CRC B) preamble C) address D) none of the above
Last Answer : CRC
Description : In synchronous TDM, forn signal sources of the same data rate, eachframe contains _______ slots. A) n B) n + 1 C) n- 1 D) 0to n
Last Answer : n
Description : A _______routingtable contains information entered manually. A) static B) dynamic C) hierarchical D) none of the above
Last Answer : static
Description : Suppose transmission rate of a channel is 32 kbps. If there are ‘8’ routes from source to destination and each packet p contains 8000 bits. Total end to end delay in sending packet P is _____. a. 2 sec b. 3 sec c. 4 sec d. 1 sec
Last Answer : a. 2 sec
Description : The network layer contains which hardware device? a. Routers, Bridges b. Bridges only c. Bridges and switches d. Routers, Bridges and Switches
Last Answer : d. Routers, Bridges and Switches
Description : A subset of a network that includes all the routers but contains no loops is called ________ a. spanning tree b. spider structure c. spider tree d. special tree
Last Answer : a. spanning tree
Description : Which of the following is not correct in relation to multi-destination routing? a. is same as broadcast routing b. contains the list of all destinations c. data is not sent by packets d. there are multiple receivers
Last Answer : c. data is not sent by packets
Description : In virtual circuit network each packet contains ___________ a. full source and destination address b. a short VC number c. only source address d. only destination address
Last Answer : b. a short VC number
Description : Header of a frame generally contains a. synchronization bytes b. addresses c. frame identifier d. all of the mentioned
Last Answer : d. all of the mentioned
Description : Connector RJ-45 contains? a. Two pins b. Four pins c. Eight pins d. Ten pins
Last Answer : c. Eight pins
Description : The subset of a network that includes all the routers but contains no loops is called ________ A. spanning tree B. spider structure C. spider tree D. special tree
Last Answer : A. spanning tree
Description : One subset of a network that includes all the routers but contains no loops is called ________ A. spanning tree B. spider structure C. spider tree D. special tree
Description : In virtual circuit network each packet contains ___________ A. full source and destination address B. a short VC number C. only source address D. only destination address
Last Answer : B. a short VC number
Description : The main circuit in a PSN generator is ____.
Last Answer : Shift register
Description : Inside the ____ is a gas generator containing a mixture of NaN3 (Sodium Azide), KNO3 (Potassium Nitrate) and SiO2 (Silicon Dioxide). When the undesired event happens, an electric circuit is ... chemical reactions generate nitrogen gas that fills ____ in 20 to 30 milliseconds. Fill up the blank
Last Answer : Air-bags in automobiles.
Description : Muscle fibre is a ____ as the sarcoplasm contains many nuclei.
Last Answer : Muscle fibre is a ____ as the sarcoplasm contains many nuclei.