Number of Co-prime pairs obtained from the sum of digits of elements in the given range
Given two numbers A and B where 1 <= A <= B. The task is to count the number of pairs whose elements are co-prime… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 58
Consider a virtual page reference string 1, 2, 3, 2, 4, 2, 5, 2, 3, 4. Suppose LRU page replacement algorithm is implemented with 3… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 57
Page information in memory is also called as Page Table. The essential contents in each entry of a page table is/are _________. (A) Page Access… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 56
Which of the following statements are true ? (a) External Fragmentation exists when there is enough total memory space to satisfy a request but the… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 55
Which UNIX/Linux command is used to make all files and sub-directories in the directory “progs” executable by all users ? (A) chmod− R a+x progs… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 54
Normally user programs are prevented from handling I/O directly by I/O instructions in them. For CPUs having explicit I/O instructions, such I/O protection is ensured… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 53
In a multi-user operating system, 30 requests are made to use a particular resource per hour, on an average. The probability that no requests are… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 52
In a paged memory, the page hit ratio is 0.40. The time required to access a page in secondary memory is equal to 120 ns.… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 51
At a particular time of computation, the value of a counting semaphore is 10. Then 12 P operations and “x” V operations were performed on… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 50
Encrypt the Message “HELLO MY DEARZ” using Transposition Cipher with (A) HLLEO YM AEDRZ (B) EHOLL ZYM RAED (C) ELHL MDOY AZER (D) ELHL DOMY… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 49
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)… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 48
Decrypt the message “WTAAD” using the Caesar Cipher with key=15. (A) LIPPS (B) HELLO (C) OLLEH (D) DAATW Answer: (B) Explanation: In Ceaser cipher algorithm… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 47
In Challenge-Response authentication the claimant ________. (A) Proves that she knows the secret without revealing it (B) Proves that she doesn’t know the secret (C)… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 46
Which of the following statements are true ? (a) Three broad categories of Networks are (i) Circuit Switched Networks (ii) Packet Switched Networks (iii) Message… Read More »
UGC-NET | UGC NET CS 2018 July – II | Question 45
Match the following symmetric block ciphers with corresponding block and key sizes: List – I List – II (a) DES (i)block size 64 and key… Read More »
