Computer Questions Answers for Competitive Exams Set-8
||Computer Questions and Answers for Competitive Exams Set-8||Computer Questions Answers for JOA IT,Computer operator & other exams||important computer related question answer||
Q116. Which of the following can only have sequential access ?
(a) Tape
(b) Disk
(c) CD-ROM
(d) DVD-ROM
(e) None of these
Explanation: Magnetic tape is a type of sequential secondary storage medium, now used primarily for storing backups. If the computer needs to read data from the middle of a reel of tape, it must first pass all the tape before the desired piece of data.
Q117. Sending an E-mail is similar to
(a) drawing a picture
(b) writing a letter
(c) talking on the phone
(d) sending a package
(e) None of these
Explanation: Although the means of communication may contrast between writing a letter versus sending an email, key both convey the same messages. A letter is a handwritten or a printed mode of communication address to a person or organisation and usually send by post. An email, on the other hand, is a modem code of communication, where digital messages are exchanged from an author to one or more than one person.
Q118. Items such as names and addresses are considered
(a) input
(b) information
(c) records
(d) data
(e) None of these
Explanation: Data is a collection of facts in raw or unorganized form (such as alphabets, numbers or symbols) that refer to or represent conditions, ideas or objects.
Q119. One who designs, writes, tests and maintains computer programs is called a
(a) Programmer
(b) User
(c) Designer
(d) Operator
(e) None of these
Explanation: A computer programmer is the one who writes, tests, debug and maintain the detailed instructiions called computer programs, that computers must follow a to perform their functions. Programmers also conceive, design and test logical structures for solving problems by computer.
Q120. Which of the following is not true concerning user IDs and passwords ?
(a) If your computer asks for a user ID and password, you can create your own
(b) When you enter your user ID and password, the computer knows it is you
(c) Sometimes you are assigned a user ID and password for security reasons
(d) You should share your user ID and password with at least one other person
(e) None of these
Explanation: A password is a secret word or strings of characters used for user authentication to prove identity or access approval to gain access to a resource, which sould be kept secret from those not allowed access. It should not be shared with anyone.
Q121. This component is required to process data into information and consists of integrated circuits
(a) RAM
(b) Hard disk
(c) CPU
(d) ROM
(e) None of these
Explanation: A CPU is a silicon integrated circuit, sometimes called a computer chip. This is because it consists of a square piece of crystallized silicon that is very, very thin. It consists of millions of transistors connected by very thin wires. It carries out the instructions of a computer program by performing the basic arithmatical, logical and input/ output operations of the system, thereby converting data into information.
Q122. Computers connected to a LAN can
(a) go on line
(b) run faster
(c) share information and/or share peripheral equipment
(d) E-mail
(e) None of these
Explanation: A local area network (LAN) supplies networking capability to a group of computers in close proximity to each other such as in an office building, a school, or a home. A LAN is useful for sharing resources like files, printers, application programes, etc.
Q123. Which is the smallest of the following computers ?
(a) Laptop
(b) Notebook
(c) Desktop
(d) Workstation
(e) None of these
Explanation: A notebook is an extremely lightweight personal computer. They typically weigh less than six pounds and are small enough to fit easily in a briefcase. However, a laptop is a small portable computer small enough that it can sit on your lap. They are somewhat larger in size than notebooks, in both thickness and weight.
Q124. What is a modem connected to ?
(a) motherboard
(b) processor
(c) printer
(d) phone line
(e) None of these
Explanation: A modem (modulator- demodulator) is an electronic device that allows computer to communicate over telephone lines or cable-TV cables. It converts the digital signals into analog signals & vice versa.
Q125. Secondary storage
(a) does not use magnetic media
(b) does not require constant power
(c) consists of four main types of devices
(d) does not store information for later retrieval
(e) None of these
Explanation: Secondary storage device (also called external or auxilliary storage) is a storage medium that holds the data and information until it is deleted by the user regardless if the computer has power. It is non-volatile in nature. eg. Floppy disk, Hard disk, CD, DVD, etc
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