Hssc Computer Health Department Exam 2016 (Shift-II)

21. Which of the following com-puter technology helps you to easily insert, retrieve, and manage data from database with appropriate security measures?

(1) DBMS (Data base management systems)
(2) Firewall
(3) AntiVirus software
(4) Pen drives

Correct Answer: (1) DBMS (Data base management systems)

Solution:Data base management System is a software which is made for the management of date and its efficient use.

22. Which of the following constraints help uniquely identify records in a table?

(1) Primary key constraint
(2) Foreign key constraint
(3) Check constraint
(4) Default constraint

Correct Answer: (1) Primary key constraint

Solution:Primary key constraint helps to provide a unique identification of records in a table.

23. Which of the following is an input device?

(1) Keyboard
(2) Printer
(3) CD-ROM
(4) Moniter

Correct Answer: (1) Keyboard

Solution:Input devices are: Key-board, Mouse, Joystick, Scanner etc.

24. Which of the following is not a computer peripheral?

(1) Mother board
(2) Scanner
(3) LCD Projector
(4) Pen drive

Correct Answer: (1) Mother board

Solution:Motherboard, rest are Computer peripheral.

25. _______is a temporary memory that loses information when the computer is switched off.

(1) Random Access Memory (RAM)
(2) Read Only Memory (ROM)
(3) Flash Memory
(4) Electrical Erasable Programmable Read only Memory (EEPROM.)

Correct Answer: (1) Random Access Memory (RAM)

Solution:Random access memory is a temporary memory that loses information when the computer is swithedoff.

26. Bluetooth is widely used technology for:

(1) Wireless personal Area Network (WPAN)
(2) Local Area Network (LAN)
(3) Metropolitan Area Network (MAN)
(4) Wide Area Network (WAN)

Correct Answer: (1) Wireless personal Area Network (WPAN)

Solution:Bluetooth is a wireless technology standard by which data exchanges can be made possible for short distances using radio waves of small wave lengths.Different devices such as mouse, keyboard, Printer, modems etc. with it, are connected without wire, wireless personal area network can also be made by connecting computer at short distances.

27. A variable in Programming is a:

(1) Named piece of Memory for storing data
(2) Procedure that performs some operations
(3) Classification of data
(4) Template that defines states and behaviours for creating objects

Correct Answer: (1) Named piece of Memory for storing data

Solution:Piece of memory for storing data is a variable for programming.

28. An object in an object oriented programming is:

(1) An instance of a class
(2) A template that defines a collection of fields and methods
(3) A built in data type
(4) An array that holds a collection of similar types

Correct Answer: (1) An instance of a class

Solution:An instance of a class is an object oriented programming.

29. Protocol used for forwarding e-mail messages is:

(1) Simple Mail Transfer Protocol (SMTP)
(2) Post office Protocol (POP)
(3) Internet Message Access Protocol (IMAP)
(4) Secure socket Layer (SSL) Protocol

Correct Answer: (1) Simple Mail Transfer Protocol (SMTP)

Solution:Simple mail transfer protocol is used for forwarding e-mail messages.

30. ____is the electronic equivalent of ordinary signatures that provides authenticity of the electronic data.

(1) Digital Signature
(2) Access Control
(3) Encipherment
(4) Plaintext

Correct Answer: (1) Digital Signature

Solution:Digital signature is the electronic equivalent of ordinary signature that provides authenticity.