The message 11001001 is to be transmitted using the CRC polynomial x3+1 to protect it from errors. The message that should be transmitted is (A) 110010011001 (B) 11001001 (C) 110010011001001 (D) 11001001011

The message 11001001 is to be transmitted using the CRC polynomial x3+1 to protect it from errors. The message that should be transmitted is (A) 110010011001 (B) 11001001 (C) 110010011001001 (D) 11001001011

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Answer :

(D) 11001001011
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The message 11001001 is to be transmitted using the CRC polynomial x^3 + 1 to protect it from errors. The message that should be transmitted is: a. 11001001000 b. 11001001011 c. 11001010 d. 110010010011

Description : The message 11001001 is to be transmitted using the CRC polynomial x^3 + 1 to protect it from errors. The message that should be transmitted is: a. 11001001000 b. 11001001011 c. 11001010 d. 110010010011

Last Answer : b. 11001001011

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)

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)

_______ 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

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Last Answer : b. CRC

If the frame to be transmitted is 1101011011 and the CRC polynomial to be used for generating checksum is x 4+ x + 1, then what is the transmitted frame? a. 11010110111011 b. 11010110111101 c. 11010110111110 d. 11010110111001

Description : If the frame to be transmitted is 1101011011 and the CRC polynomial to be used for generating checksum is x 4+ x + 1, then what is the transmitted frame? a. 11010110111011 b. 11010110111101 c. 11010110111110 d. 11010110111001

Last Answer : c. 11010110111110

Using factor theorem, factorise the polynomial x3 + x2 - 4x - 4. -Maths 9th

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Last Answer : Solution :-

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 not divide 1+x^k, for any k not exceeding the frame length c. 1+x is a factor of G(x) d. G(x) has an odd number of terms

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)

In CRC based design, a CRC Team consists of : (a) one or two users representatives (b) several programmers (c) project co-ordinators (d) one or two system analysts

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Last Answer : Answer: C

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Last Answer : (C) Exponential time using dynamic programming algorithm or branch-andbound algorithm.

Big - O estimate for f(x) = (x + 1) log(x2 + 1) + 3x2 is given as (A) O(xlogx) (B) O(x2) (C) O(x3) (D) O(x2logx)

Description : Big - O estimate for f(x) = (x + 1) log(x2 + 1) + 3x2 is given as (A) O(xlogx) (B) O(x2) (C) O(x3) (D) O(x2logx)

Last Answer : (B) O(x2)

Consider the following LPP: Min. Z = x1+x2+x3

Description : Consider the following LPP: Min. Z = x1+x2+x3 Subject to 3x1 + 4x3 ≤ 5 5x1 + x2 + 6x3 =7 8x1 + 9x3 ≥ 2 x1, x2, x3 ≥ 0 The standard form of this LPP shall be: (1) Min. Z = x1 + x2 + x3 + 0x4 + 0x5 Subject ... + 4x3 + x4 = 5; 5x1 + x2 + 6x3 + x6 = 7; 8x1 + 9x3 - x5 + x7 = 2; x1 to x7 ≥ 0

Last Answer : Answer: 1

What is the main difference between DDCMP and SDLC? a. DDCMP does not need special hardware to final the beginning of a message b. DDCMP has a message header c. SDLC has a IP address d. SDLC does not use CRC

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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

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Last Answer : A. 1101011011 1110

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Description : A message “COMPUTERNETWORK” encrypted(ignore quotes)using columnar transposition cipher with a key “LAYER”. The encrypted message is: (A) CTTOEWMROPNRUEK (B) MROUEKCTTPNROEW (C) OEWPNRCTTUEKMRO (D) UEKPNRMROOEWCTT

Last Answer : (C) OEWPNRCTTUEKMRO

Encrypt the plain text Message “EXTRANET” using Transposition cipher technique with the following key: Image Using ‘Z’ as bogus character. (A) TAXERTZENZ (B) EXTRANETZZ (C) EZXZTRZANZET (D) EXTZRANZETZ

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Last Answer : (A) TAXERTZENZ 

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Last Answer : D) All i, ii, iii, iv and v

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Last Answer : (D) the process of executing a program with the intent of finding errors.

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Last Answer : (B) is carried out to port the existing software to a new environment.

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Last Answer : (B) It runs the word count program to count the number of lines in its input, a, writing the result to b, but does it in the background.

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Last Answer : (B) may cause an entire system to fail.

Given code word 1110001010 is to be transmitted with even parity check bit. The encoded word to be transmitted for this code is (A) 11100010101 (B) 11100010100 (C) 1110001010 (D) 111000101

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Last Answer : (A) 11100010101 

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Last Answer : A) Encryption

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Last Answer : D) All i, ii, iii, iv and v

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Last Answer : A) Address Resolution Protocol (ARP)

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Last Answer : D) All i, ii, iii, iv and v

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Last Answer : D) Internet Control Message Protocol (ICMP)

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Last Answer : D) All i, ii, iii, iv and v only

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Last Answer : D) Frame

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Last Answer : 17

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Last Answer : (A) Port 

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Last Answer : (B) 2r-r-1

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Last Answer : (C) All parallelism is implicit.

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Last Answer : (D) In PVM Model, the message order is not preserved.

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Last Answer : (C) Tightly coupled software on loosely coupled hardware and message passing ,respectively. 

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Last Answer : (D) 30

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Last Answer : (4) 5 bytes 

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Last Answer : d. i and iv 

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Last Answer : All of theabove

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Last Answer : a) Internet Control Message Protocol

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Last Answer : There’s a first time for everything. Leaving you a “silent” voice mail is one computer sending a digital file to yours, which is how a virus spreads. I’d run a scan to hunt for a possible virus, and not open any vmails from people you don’t know.

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Description : How is a message transmitted?

Last Answer : Short Message Service message are transmitted through a message center a message store that holds a text message from the sending phone until the receiving phone is available to except the message.

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Description : The correctness and accuracy of the transmitted message content is A. verified by the modem B. communications system C. determined by the sender and receiver D. ensured by use of digital technique

Last Answer : C. determined by the sender and receiver

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Last Answer : B. synchronous

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Last Answer : E)medium of transmission.

WinRAR corrupt MP3 file -CRC failed?

Description : WinRAR corrupt MP3 file -CRC failed?

Last Answer : I can’t answer this question, but I have already sent it to some tech-sawy people on ask-public. Hang on!

Beat Master related to CRC means a) The postman of beat of delivery office b) It contains details of beats covered by each delivery office c) All the above d) None of these

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Last Answer : b) It contains details of beats covered by each delivery office

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Last Answer : c) It contains agencies detail of MMS & Sections for carrying bags closed in the CRC to other offices