PGT Computer Science (Level-3), (HTET Exam 2018)

Total Questions: 150

121. Maximum channel utilization in case of pure ALOНА is:

Correct Answer: B. 18%

122. Which of the following is not supported in C++?

Correct Answer: A. Automatic garbage collection

123. Which of the following operations requires two tables as input having a least one common column?

Correct Answer: B. Join

124. Which of the following is invalid C++ comment statement?

Correct Answer: C. /*Comment*\

125. URL stands for:

Correct Answer: C. Uniform Resource Locator

126. Consider the following SQL query:

SELECT title, name
FROM Employee
ORDER BY title, name DESC:
In output of above query the different titles are listed
in ............. order and names of employees having
same title are listed in ................ order.

Correct Answer: B. Ascending, Descending

127. Match the following:

  Protocol           Description
 (a) UDP (i) Message Transfer Protocol
 (b) OSPF (ii) Bit-oriented Protocol
 (c) SMTP (iii) Interior Gateway Routing Protocol
 (d) HDLC (iv) Connectionless Transport Protocol

Codes:

 (a) (b) (c) (d)
A. (iii) (iv) (ii) (i)
B. (iv) (iii) (ii) (i)
C. (iv) (iii) (i) (ii)
D. (iii) (iv) (i) (ii)
Correct Answer: C.

128. The ER model describes data as

Correct Answer: B. entities, relationships and attributes

129. Which of the following operators cannot be applied to a pointer?

Correct Answer: D. None of the above

130. Boolean Algebra is used for designing and analysing:

Correct Answer: A. digital circuits