General Computer Knowledge

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Which layer of OSI reference model is responsible to determine the interface of the system with the user

A)
Application layer

B)
Session layer

C)
Transport layer

D)
Data link layer


Correct Answer :

Application layer

‘Internet’ is an example of

A)
LAN

B)
MAN

C)
WAN

D)
None of these


Correct Answer :

WAN

Which of the following is a most reliable topology?

A)
Bus

B)
Star

C)
Ring

D)
Mesh


Correct Answer :

Mesh

Hierarchical topology is used to establish a network which is also known as

A)
Bus

B)
Star

C)
Tree

D)
Mesh


Correct Answer :

Tree

Which of the following has minimum transmission speed?

A)
Twisted pair wire

B)
Fiber optic cable

C)
Coaxial cable

D)
Microwave


Correct Answer :

Twisted pair wire

Speed of internet connection is measured in

A)
Kilo bits per second

B)
Kilo Boolean per second

C)
Meter per second

D)
None of these


Correct Answer :

Kilo bits per second

TCP/IP is an example of

A)
Communication protocol

B)
Networking protocol

C)
Data transfer protocol

D)
All options are correct


Correct Answer :

All options are correct

In communication satellite, multiple repeaters are known as

A)
Detector

B)
Modulator

C)
Stations

D)
Transponders


Correct Answer :

Transponders

‘Communication protocol’ means

A)
Data transformation

B)
Set of rules to communicate data from one machine to another machine

C)
Transmission signals

D)
None of these


Correct Answer :

Set of rules to communicate data from one machine to another machine

HTTP stands for

A)
Hyper Text Transfer Protocol

B)
Hyper Text Transmission Protocol

C)
Hyper Text Tie up Protocol

D)
Hyper Thing Together Protocol


Correct Answer :

Hyper Text Transfer Protocol

IPV4 address consists of _______ parts separated by dots

A)
2

B)
3

C)
4

D)
1


Correct Answer :

4

Domain name matching to IP address is performed by

A)
Electronic mail

B)
URL

C)
DNS

D)
FTP


Correct Answer :

DNS

Which of the following is connectionless transport layer protocol?

A)
TCP

B)
UDP

C)
NNTP

D)
FTP


Correct Answer :

UDP

Which one is the largest HTML heading tag?

A)
H1

B)
H2

C)
H3

D)
H4


Correct Answer :

H1

Public key algorithms are used for

A)
Storage of information

B)
Information exchange

C)
Information security

D)
None of these


Correct Answer :

Information security

Which of the following function is not performed by the operating system?

A)
Processor management

B)
Constraint satisfaction

C)
Deadlock handling

D)
File management


Correct Answer :

Constraint satisfaction

Firewall is software which is normally installed on the _______ of organization

A)
Google server

B)
Client machine

C)
Proxy server

D)
None of these


Correct Answer :

Proxy server

What is the full form of SMTP?

A)
simple mail transfer protocol

B)
simplex mail transfer protocol

C)
simple mail interrupt protocol

D)
simple mail training protocol


Correct Answer :

simple mail transfer protocol


Explanation :

SMTP(Simple Mail Transfer Protocol) provides the ability to send and receive email messages. SMTP is an application-layer TCP/IP protocol that enables the transmission and delivery of email over the Internet.

What is the full form of DNS?

A)
Domain name system

B)
Domain network system

C)
Dynamic name system

D)
Distributed name system


Correct Answer :

Domain name system


Explanation :

Domain name system (DNS) is a hierarchical naming system built on a distributed database. This system used to resolve human-readable hostnames to machine-readable IP addresses.

OSI reference model consists of how many layers?

A)
7

B)
6

C)
5

D)
4


Correct Answer :

7


Explanation :

The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. It is also referred to as the OSI Reference Model or just the OSI Model.

Layer 7 - Application
Layer 6 - Presentation
Layer 5 - Session
Layer 4 - Transport
Layer 3 - Network
Layer 2 - Data Link
Layer 1 - Physical

Which of the following is not a File System?

A)
FAT

B)
NTFS

C)
UFS

D)
LCD


Correct Answer :

LCD


Explanation :

FAT file system File allocation table (FAT) file system is basically a simple file system designed for small disk and simple folder structures.

NTFS (NT file system; sometimes called New Technology File System) is the file system that the Windows NT operating system uses for storing and retrieving files on a hard disk. NTFS is the Windows NT equivalent of the Windows 95 file allocation table (FAT)

UFS File Systems. The Unix file system is a file system supported by Unix and Unix-like operating systems.

Every web page that is displayed on the internet has a specific address associated with it. This address is known as:

A)
Uniform Research Limited

B)
Uniform Resource Locator

C)
Uniline Resource Lab

D)
Uniform Research Locator


Correct Answer :

Uniform Resource Locator


Explanation :

Each webpage can be accessed with its own individual Uniform Resource Locator (URL) on internet. A URL is made up of several part, all of which have their own functions.
The parts are-
Protocol to be used to access the resource on the Internet.
Host that holds the resource.
A path/folder location.
File name and extension.

The Speed of the internet is measured in the number of:

A)
Bit transferred per unit time

B)
Byte transferred per unit time

C)
Bit transferred per square unit time

D)
None of these


Correct Answer :

Bit transferred per unit time


Explanation :

Computers send information over the internet, this information is in bits. Bits take time to reach their destination. That time is measured in seconds. So internet speeds are measured by identifying how many bits are transferred in one second, hence bits per second.

At the time of composing any e-mail, we have three options- To, CC and BCC. What is the meaning of BCC here?

A)
Blind carbon copy

B)
Blind copy carbon

C)
Blind compose copy

D)
Blind copy compose


Correct Answer :

Blind carbon copy


Explanation :

CC stands for Carbon Copy, whereas BCC stands for Blind Carbon Copy. When a message is blind carbon copied, neither the main recipient nor the Bcc'd recipients can see the addresses in the Bcc field. Blind carbon copying is a useful way to let others to see e-mail,which you have sent without the main recipient knowing.

Which of the following is a video compression technology?

A)
MPEG

B)
NPEG

C)
LPEG

D)
OPEG


Correct Answer :

MPEG


Explanation :

A file with the .mpeg (or .mpg) file extension is an MPEG video file format.

The MPEG standards are an evolving set of standards for video and audio compression developed by the Moving Picture Experts Group (MPEG).

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Area

The angles of a triangle are in the ratio 2 : 4 : 3. The smallest angle of the triangle is?

Which one of the following triples does not represent the sides of a triangle?

If the perimeter of a rectangle is 10 cm and the area is 4 cm2, then its length is?

Height and Distance

An aeroplane flying at a height of 300 m above the ground passes vertically above another plane at an instant when the angles of elevation of the two planes from the same point on the ground are 60º and 45º respectively. What is the height of the lower plane from the ground?

From the top of a building 90 m high, the angles of depression of the top and the bottom of a tree are 30º and 45º respectively. What is the height of the tree?

Trigonometry

What is the value of sinx √( 1 /1+cosx + 1 /1-cosx ) ?

What is cos4 A - sin4 A / cos2 A - sin2 A equal to?

If 7sin2 x +3cos2 x = 4, 0 < x < 90º ,then what is the value of tan x?

If x = a cosθ + b sinθ and y = a sinθ - b cosθ then what is x2 + y2 equal to?

Average

The mean of 5 numbers is 15. If one more number is included, the mean of the 6 numbers becomes 17. What is the included number?

The mean marks obtained by 300 students in a subject are 60. The mean of top 100 students was found to be 80 and the mean of last 100 students was found to be 50. The mean marks of the remaining 100 students are?

In an asymmetrical distribution, of the mean and median of the distribution are 270 and 220 respectively, then the mode of the data is?

Let a, b, c, d, e, f, g be consecutive even numbers and j, k, l, m, n be consecutive odd numbers. What is the average of all the numbers?

Alligation or Mixture

25 kg of alloy X is mixed with 125 kg of alloy Y. If the amount of lead and tin in the alloy X is the ratio 1 : 2 and the amount of lead and tin in the alloy Y is in the ratio 2 : 3, then what is the ratio of lead to tin in the mixture?

Simplification

The ratio of two numbers is 1 : 5 and their product is 320. What is the difference between the square of these two numbers?