IT &computer MCQ section 6 MCQ Questions & Answers Detailed Explanation

Answer: (a)

The valid phases of a virus are:

1. Dormant phase: Propagation phase - Triggering phase - Execution phase.

2. Dormant phase: The virus is idle. The virus will eventually be activated by some event);

3. Propagation phase: The virus places an identical copy of itself into other programs or into certain system areas on the disk. Each infected program will now contain a clone of the virus, which will itself enter a propagation phase;

4. Triggering phase: The virus is activated to perform the function for which it was intended. Can be caused by a variety of system events;

5. Execution phase: The goal of the virus software is performed

Answer: (a)

A microcomputer is a small, relatively inexpensive computer with a microprocessor as its central processing unit (CPU). It includes a microprocessor, memory, and input/output (I/O) facilities. They were at the centre of the home computer market segment.

Answer: (c)

A relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as introduced by E. F. Codd, of IBM’s San Jose Research Laboratory.

Answer: (a)

WEP stands for Wired Equivalent Privacy. It is a security algorithm for IEEE 802.11 wireless networks. Introduced as part of the original 802.11 standard ratified in 1997, its intention was to provide data confidentiality comparable to that of a traditional wired network. It was superseded by Wi-Fi Protected Access (WPA) in 2003.

Answer: (b)

The Sun Labs skunk works have found the use of computers and networks in the car, using Java, Solaris/Linux, and embedded systems. The car track is embedded with real-time Java sensor technology.

Answer: (b)

Digital circuits, represent signals by discrete bands of analog levels, rather than by a continuous range. Because the fundamental information element of digital circuits has two states, it is most naturally represented by a number system where each individual digit has two states: binary.