PGT Computer Science (Level-3), (HTET Exam 2022)

Total Questions: 150

131. In directed graph G(V, E) where V = {P, Q, R, S, T} and E = {PQ, RS, TP, PS, QR, PT, ST, QP, RQ, TS}, the vertex with maximum in-degree is ________ and vertex with maximum out-degree is ________ .

Correct Answer: D. S, P

132. In MS-PowerPoint-2007, size of a slide can be set to A4 size using which of the following options?

Correct Answer: B. Design page setup

133. Consider Column-I and Column-II in context of C++:

  Column-I   Column-II
 (i) Private (a) Data type modifier
 (ii) Sizeof (b) Visibility specifier
 (iii) Static (c) Operator
 (iv) Long (d) Storage class

Match the Column-I and Column-II is:

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

134. In context of 2-phase locking protocol in DBMS, a transaction issues lock requests in ________ phase and unclock requests in ________ phase.

Correct Answer: A. Growing, Shrinking

135. The Boolean expression F = (x . y'+x '. y +x . y') is equivalent to:

Correct Answer: B. x' + y'

136. The _________ of weak entity set distinguishes among all those entities in the weak entity set that depends upon one particular strong entity.

Correct Answer: B. Discriminator

137. Calculate number of page faults for reference string 3, 2, 4, 1, 3, 5, 2, 1, 7, 3, 0 considering four frames and eight pages of equal size and LRU page replacement technique:

Correct Answer: C. 5

138. In context of semaphores choose the option with valid codes for wait() and signal() functions:

Correct Answer: B. Wait (s) {while (s) <= 0; s --} and signal (s) {s + + ;}

139. In context of software testing match of Column-I and Column-II is:

  Column-I   Column-II
 (i) Integration Testing (a) Alpha Testing
 (ii) Unit Testing (b) Usability Testing
 (iii) Acceptance Testing (c) Data Flow Testing
 (iv) System Testing (d) Black Box Testing
 (i) (ii) (iii) (iv)
 A. (a) (b) (d) (c)
 B. (d) (c) (b) (a)
 C. (c) (d) (a) (b)
 D. (b) (d) (a) (c)
Correct Answer: C.

140. Which of the following pairs represents types of charts in MS-PowerPoint?

Correct Answer: A. Area, Surface