Why does the data communication industry use the layered OSI reference model? It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers. It encourages industry standardization by defining what functions occur at each layer of the model.
7.In round robin (time slicing) policy applied on uni processor scheduling
Options: (A)When interrupt occurs, the currently running process is placed in ready queue, and next ready job is selected in First come First serve basis. (B) When interrupt occurs, the currently running process is placed in ready queue and next ready job is selected in random order. (C) No interruption is entertained. (D) None of these. 12
An intrusion detection system does not perform which of the following?
Options: Tries to identify attempts to hack into a computer system., May monitor packets passing over the network., May transmit message packets to the correct destination., Set up deception systems that attempt to trap hackers.
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
Options: work done in rolling is more than in lifting, work done in lifting the stone is equal to rolling it, work done in both is same but the rate of doing work is less in rolling, work done in rolling a stone is less than in lifting it
Which one of the following statements best describes magnetic hysteresis?
Options: Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet, Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet, Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently, Hysteresis is most apparent when the core material is saturated
Options: (A)A sequential execution of a program, one statement at a time (B) Execution of a program by more than one task, with each task being able to execute the same or different statement at the same moment in time (C) A program or set of instructions that is executed by a processor. (D) None of these
If you need to double underline a word, how will you do that?
Options: a. Go to Format menu and then Font option. Open Underline Style and choose Double Underline
b. From Format menu choose Font option and then from Font tab open Underline Style and select Double Underline
c. Select the text then choose Format >> Font and on Font tab, open Underline Style and choose Double Underline
d. Click double underline tool on formatting toolbar