IT &computer MCQ section 4 MCQ Questions & Answers Detailed Explanation
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The following question based on IT & computer topic of general awareness mcq
(a) ROM
(b) Ram
(c) PROM
(d) EEPROM
The correct answers to the above question in:
Answer: (a)
Read-only memory (ROM) is a class of storage medium used in computers and other electronic devices. It is programmed during manufacturing process.
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Read more it and computer Based General Awareness Questions and Answers
Question : 1
Which of the following is used to protect objects in computer system, in the absence of more complete protection schemes?
a) passwords
b) digital certificate
c) digital signature
d) tokens
Answer »Answer: (a)
Passwords are often used to protect objects in the computer system, in the absence of more complete protection schemes. They can be considered a special case of either keys or capabilities. Passwords are the most common approach to authenticating a user identity.
Question : 2
‘IC’ in computers stands for
a) Integrated Circuits
b) Integrated Charge
c) Integrated Current
d) Internal Circuits
Answer »Answer: (a)
IC, or An integrated circuit is a small wafer, usually made of silicon, that can hold anywhere from hundreds to millions of transistors, resistors, and capacitors. These extremely small electronics can perform calculations and store data using either digital or analog technology.
Question : 3
An attribute that uniquely identifies the rows of a table is known as the ....... key.
a) composite
b) primary
c) candidate
d) foreign
Answer »Answer: (b)
An attribute that uniquely identifies the rows of a table is known as the primary key.
Question : 4
Who developed the concept ‘World Wide Web’ ?
a) Arthur Clarke
b) Tim Berners-Lee
c) Microsoft
d) AT & T Bell Lab
Answer »Answer: (c)
The World Wide Web (abbreviated as WWW or W3, commonly known as the Web), is a system of interlinked hypertext documents accessed via the Internet.
Using concepts from his earlier hypertext systems like ENQUIRE, British engineer, computer scientist and at that time employee of CERN, Sir Tim Berners-Lee, now Director of the World Wide Web Consortium (W3C), wrote a proposal in March 1989 for what would eventually become the World Wide Web.
Question : 5
The period of the Second Generation Computers was
a) 1959 – 1964
b) 1946 – 1958
c) 1940 – 1960
d) 1965 – 1975
Answer »Answer: (a)
The period 1953-1964 is generally taken to be the period of second-generation computers.
Sometimes, 1946-1958 is supposed to be the period of first-generation computers. By 1948, the invention of the transistor greatly changed the computer's development.
The transistor replaced the large, cumbersome vacuum tube in televisions, radios and computers. As a result, the size of electronic machinery has been shrinking ever since. From 1955 onwards transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers.
A second generation computer, the IBM 1401, captured about one-third of the world market. IBM installed more than ten thousand 1401s between 1960 and 1964.
Question : 6
On a CD-RW you can
a) only read information
b) read and write information
c) only write information
d) read write and rewrite information.
Answer »Answer: (d)
A CD-RW (Compact Disc-ReWritable) is a rewritable optical disc. It is readable and writable and re-writable also.
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IT &computer MCQ section 1
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IT &computer MCQ section 6
IT &computer MCQ section 7
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