[Pak Youth] CS601 Quiz No. 4 Solved

If the ASCII character G is sent and D is received, what type of error is this

Single Bit

Multiple Bit 

Burst

Recoverable

 

The number of bit positions in which two code words differ is called

Checksum distance

Hamming Distance

CRC distance

Parity distance

 

Which error detection method cannot detect a burst error?

VRC

LRC

CRC

Hamming Code

If odd parity is used for ASCII error detection, the number of 0's per 8 - bit symbol is

Even

ODD

Indeterminate

42

 

If the data unit is 111111,the divisor 1010,what is the dividend a the transmitter?

111111000

1111110000

111111 

1111111010

 

If the data unit is 111111, the divisor 1010, and the reminder 110, what is the dividend at the receiver?

111111011

11111110

1010110

110111111

 

If source machine sends independent frames to destination machine without having acknowledgment, this service is _ _ _ _ _ _ _

Unacknowledged connection oriented   

Unacknowledged connection less

Acknowledged connection oriented 

Acknowledged connection less

 

A path which connects DLL and Network layer on source to DLL and Network layer on the destination is _ _ _ _ _ _ _ _ _ _ path

Actual

Critical

Vertical Virtual

 

When the receiver sees five consecutive incoming '1' bits followed by a '0' bit it automatically dyestuffs _ _ _ _ _ _ _ _ _ in bit stuffing

'1' bit 

'0' bit

'01' bit

'10' bit   

 

In the data link layer, each frame begins and ends with a special bit pattern _ _ _ _ _ _ _ _, called a flag byte

01110110

01111110

01011010

10101010

 

The data link layer must use the service provided to it by the _ _ _ _ _ _ _ _ layer

Data Link

Physical

Transport

Session

 

 

 

 

 

 

Each frame begins and ends with a special bit pattern called _ _ _ _ _

Char Stuffing

Flag

Bit Stuffing

Char Count

 

 

Unacknowledged connection less service is adopted when _ _ _ _

Error is very low   

Error rate is very high

Long length is required

Error rate is very high

 

____ Technique requires more redundancy bits.
Select correct option:

Error detection
Error correction
Both of the given
None of the given

 

Error control in the data link layer is based on _______________.
Select correct option:

automatic repeat request
automatic repeat acknowledgment
automatic send acknowledgment
automatic send request

 

Question # 5 of 10 ( Start time: 11:27:46 PM )  Total Marks: 1  
CRC must have ____ qualities to be valid.  
Select correct option:  

4 
3 
5 
2 

Which error detection method involves polynomials?
Select correct option:

Simple parity check
Two-dimensional parity check
CRC
Checksum

 

In Go-Back-N ARQ, if frames 4, 5 and 6 are received successfully, the receiver may send an ACK _________ to the sender.  
Select correct option:  

5 
6 
7 
Any of the given 

 

VRC and LRC are based on?
Select correct option:
Addition
Multiplication
Subtraction
Division

 

If the primary wants to receive data, it asks the second-arise if they have anything to send, this is called  
Select correct option:  

POLLING 
SELECTING 

 

 

________ ARQ, if a NAK is received, only the specific damaged or lost frame is retransmitted.  
Select correct option:  
Stop and Wait 
Go-Back-N 
Selective repeat         
 Stop-and-wait & Go-back-N 

--
Zindagi mein 2 Logo ka buhat khayal rahkoooo

Ist woh jiss ney tumhari jeet ke Liye buhat kuch hara hoo (Father)

2nd woh jiss ko tum ney har dukh me pukaara hoo (Mother)

Regards, 

Umair Saulat

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