PGT Computer Science (Level-3), (HTET Exam 2019)

Total Questions: 150

131. In MS-PowerPoint-2007 short-cut key Control + H is used to ________ in the document.

Correct Answer: B. Replace text

132. In mass storage devices _________ is process of rearranging/relocating many small non-contiguous blocks of data, into fewer contiguous big-sized blocks.

Correct Answer: A. Defragmentation

133. Which of the following is not valid pair of input devices?

Correct Answer: D. Plotter, Mouse

134. Which of the following is not a type of computer port?

Correct Answer: В. РОРЗ

135. Boolean expression y.z + z is equal to which of the following?

Correct Answer: C. z

136. A network using CSMA/CD has a bandwidth 10 Mbps. If the maximum propagation time (including delays in the devices and ignoring the time needed to send a jamming signal) is 25.6 micro seconds. What is the minimum size of the frame?

Correct Answer: C. 64 bytes

137. In context of error detection and correction in computer networks, CRC stands for:

Correct Answer: B. Cyclic Redundancy Check

138. There are several common terminologies used for signal rate in the literature of computer networks. Which of the following is not a common terminology for signal rate?

Correct Answer: C. Bit rate

139. OSI stands for:

Correct Answer: D. Open Systems Interconnection

140. In C++, which of the following is not a valid access specifier?

Correct Answer: D. mutable