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Online Computer Science Test - Computer Science Test - Random

Instruction:
  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20

Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
Frames from one LAN can be transmitted to another LAN via the device
Router
Bridge
Repeater
Modem
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Networking
2.
Distributed Queue Dual Bus is a standard for
LAN
MAN
WAN
Wireless LAN.
LAN and MAN
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
This standard is part of a family of standards for local area networks (LANs) and metropolitan area networks (MANs) that deals with the physical and data link layers as defined by the ISO open systems interconnection reference model. It defines a high-speed shared medium access protocol for use over a dual, counterflowing, unidirectional bus subnetwork. The physical layer and distributed queue dual bus (DQDB) layer are required to support a logical link control (LLC) sublayer by means of a connectionless medium access control (MAC) sublayer service in a manner consistent with other IEEE 802 networks. Additional DQDB layer functions are specified as a framework for other services. These additional functions will support isochronous service users and connection-oriented data service users, but their implementation is not required for conformance.
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Learn more problems on : Networking
3.
If communication software can be called the "traffic cop" of a micro communication system, then what should the modem be called?
Park
Bridge
Interface
Link
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Networking
4.
Block caches or buffer caches are used
to improve disk performance
to handle interrupts
to increase the capacity of the main memory
to speed up main memory read operation
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Operating Systems Concepts
5.
A type of channel used to connect a central processor and peripherals which uses multipling is known as
Modem
Network
Multiplexer
All of the above
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Computer Fundamentals
6.
Bridges operate at the MAC layer (layer 2 of the OSI model.)
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Windows NT
7.
The highest level in the hierarchy of data organization is called
data bank
database
data file
data record
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Database Systems
8.
What is the name given to the database management system which is able to handle full text data, image data, audio and video?
Full media
Graphics media
Multimedia
Hypertext
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Database Systems
9.
A human cannot feel a static discharge as high as _____ volts.
200
2000
10000
50000
50
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Computer Hardware
10.
If the processor of a computer does not have a direct and unassisted access to data items, these items are said to be
offline
remote
disconnected
detached
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Computer Fundamentals
11.
Which of the following is usually a special one-time operation that must be completed over a limited time period?
Batch
Patch
Project
Word
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Computer Fundamentals
12.
The primary memory of a personal computer consists of:
ROM only
RAM only
Both ROM and RAM
Memory module
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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13.
Ultimately, internal constraints can be traced to limits on
manpower
money
machines
material
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Management Information Systems
14.
The program counter:
decides which program to run
counts the number of instructions that have been executed
contains the address of the next instruction to be executed
is where arithmetic is done in a computer.
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Automation System
15.
Which of the following devices could be part of a sensor?
thermometer
brake
relay
clutch.
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Automation System
16.
Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode
11 mA
12 mA
10 mA
14 mA
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Electronic Principles
17.
Which is the most widely used semiconductor?
Copper
Silicon
Germanium
All of the above
None of the above
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Electronic Principles
18.
Function templates _____________
must have exactly one parameter
may have more than one parameter as long as they are of the same type
may have more than one parameter of any type
may not have parameters
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Object Oriented Programming Using C++
19.
Another drawback to returning an error code from a function is that any error code returned by the function
must be of the same type as return type of the function
must not be a character
cannot be checked in a main() program
can have multiple meanings
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Object Oriented Programming Using C++
20.
You can pass _____ to functions
copies of individual structure members
copies of entire structures
pointers to structures
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Object Oriented Programming Using C++
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