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

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 It was superseded by Wi-Fi Protected Access (WPA) in 2003.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)

In order to transfer packets from a sending host to the destination host, the network layer must determine the path that the packets are to follow. Routing is the process by which systems decide where to send a packet.

It directs network packets from their source toward their destination through intermediate network nodes by specific packet forwarding mechanisms.

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: (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.

Answer: (b)

UNIX is a popular multi-user, multitasking operating system developed at Bell Labs in the early 1970s. Created by just a handful of programmers, UNIX was designed to be a small, flexible system used exclusively by programmers. It was designed to be portable, multi-tasking and multi-user in a timesharing configuration.

Answer: (b)

URL is an acronym for Uniform Resource Locator. Commonly referred to as a web address, URL is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it.