U.G.C. NET Exam. December 2022 Paper-II (COMPUTER SCIENCE) and Applicatations.

Total Questions: 100

61. Consider a computer network using the distance vector routing algorithm in its network layer. The objective is to find the shortest cost path from router R to routers P and Q. Assume that R does not initally know the shrotest routes to P and Q. Assume that R has three neighboring routers, namely; X, Y and Z. During one iteration R measures its distance as 3, 2 and 5, 7, 6 and 5 from router X, Y and Z to router P, respectively. The routing vector also indicates that the distance to router Q from Routers X, Y and Z are 4, 6, 8 respectvely. Which of the following statement is/are True with respect to the new routing table at router R after updation during this iteration.

A. The distance from R to P will be stored as 10.
B. The distance from R to Q will be stored as 7.
C. The next hop router for a packet from R to P is Y.
D. The next hop router for a packet from R to Q is Z
Choose the correct answer from the option given below.

Correct Answer: (a) B and C only
Solution:

62. Consider the routing table of an organization's router as shown in the table given below


Choose the correct answer from the options given below :

Correct Answer: (d) B and D only
Solution:

63. Consider two hosts P and Q are connected through a router R. The maximum transfer unit (MTU) value of the link between P and R is 1500 bytes and between R and Q is 820 bytes. A TCP segment of size of 1400 bytes is transferred from P to Q through R with IP identification value of 0x12334. Assume that IP header size is 20 bytes. Further the packet is allowed to be fragmented that is Don't Fragment (DF) flag in the IP Header is not set by P.

Which of the following statement is/are not true?
A. Two fragments are created at R and IP datagram size carrying the second fragment is 620 bytes.
B. If the second fragment is lost then R resend the fragment with IP Identification value of 0x1234
C. If the second fragment lost then P required to resend the entire TCP segment.
D. TCP destination port can be determined by analyzing the second fragment only.
Choose the correct answer from the options given below.

Correct Answer: (d) B and D only
Solution:

64. Consider the following features of Neural networks.

A. It is essentially a machine learning algorithm.
B. It is useful when solving problems for which the data set is very large.
C. They are able to extract features without input from the programmer.
D. These are systems modeled on the human brain and nervous system.
Choose the most appropriate answer from the options given below.

Correct Answer: (d) A, B, C & D
Solution:

Let's consider the features of neural networks you mentioned :
A. Correct, Neural networks are indeed a machine learning algorithm commonly used for various tasks like image recognition natural language processing and more.
B. Correct, Neural networks can handle large datasets effectively making them suitable for complex problems with vast amounts of data.
C. Correct, That's one of the key advantages of neural network-they can automatically learn and extract relevant features from the input data without explicit programming.
D. Correct, Neural network are inspired by the structure and function of the human brain and nervous system. They consist of interconnected artificial neurons that process and transmit information mimicking biological neural networks.
So option (d) is correct.

65. Consider the following draw backs is/are of Rule based approach is/are :

A. The learning is static.
B. Any changes made to the original data will not be considered.
C. Once trained the model cannot improve on the basis of feedback.
Choose the correct answer from the options given below.

Correct Answer: (a) All the above statements are correct
Solution:

The correct statement is A, B, and C the draw pack of the Rule - based approach are
A. The learning is static
B. Any changes made to the original data will not be considered.
C. Once trained the model cannot improve on the basis of feedback.
These limitations highlight the inflexibility and lack of adaptability of Rule- based system compared to other machine learning approaches.

66. Match List I with List II

Correct Answer: (b) A-III; B-IV; C-II; D-I
Solution:

67. Match List I with List II

Correct Answer: (b) A-IV; B-III; C-II; D-I
Solution:

68. Match List I with List II

Correct Answer: (b) A-III; B-I; C-IV; D-II
Solution:

69. Match List I with List II

Correct Answer: (b) A-III; B-IV; C-I; D-II
Solution:

70. Match List I with List II


Choose the correct answer from the options given below :

Correct Answer: (d) A-III; B-I; C-IV; D-II
Solution: