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Computer Science

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1451

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File Types And Extensions

easy
Computer Science

Which of these is a type of sound file?

A
DAT files
B
LOG files
C
DRV Files
D
WAV Files
Explanation and memory cue

WAV files are a common type of sound file format used to store audio data. DAT files can be data files but are not specifically sound files, LOG files are typically text files for logging information, and DRV files are driver files related to hardware, not sound.

1452

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Types Of Networks By Area

easy
Computer Science

A network that covers a large area, such as a city, country, or beyond, is called____:

A
LAN
B
Router
C
WAN
D
Bridge
Explanation and memory cue

A WAN (Wide Area Network) covers a large geographical area such as cities, countries, or even globally, unlike LANs which cover smaller areas like homes or offices. Routers and bridges are networking devices, not types of networks by area.

1453

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Network

easy
Computer Science

When two people collaborate on an online document at the same time, they are collaborating:

A
In Cloud
B
Edit By Tracking
C
Independently
D
Synchronously
Explanation and memory cue

When two people work on an online document simultaneously, they are collaborating synchronously, meaning their actions happen at the same time and are reflected in real-time.

1454

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Modes Of Data Transmission

easy
Computer Science

In which communication mode does data flow in only one direction, like a television broadcast and radio?

A
Half-Duplex
B
Full-Duplex
C
Simplex
D
Duplex
Explanation and memory cue

Simplex communication mode allows data to flow in only one direction, similar to television and radio broadcasts where the signal is sent from the source to the receiver without any return path.

1455

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Network

easy
Computer Science

What does '470 PIN' stand for?

A
Payment Identification Number
B
Personal Identification Number
C
Personal Identification Numeric
D
None of these
Explanation and memory cue

PIN stands for Personal Identification Number, not '470 PIN'. The term '470 PIN' is not a standard acronym or recognized term in networking or security contexts. Therefore, none of the provided options correctly define '470 PIN'.

1456

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Types Of Networks By Area

easy
Computer Science

What does WAN stand for?

A
Wide Area Network
B
Wireless Area Network
C
Wide Access Network
D
Wireless Access Network
Explanation and memory cue

WAN stands for Wide Area Network, which is a telecommunications network that extends over a large geographical area. This distinguishes it from other network types such as LAN (Local Area Network).

1457

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Types Of Networks By Area

easy
Computer Science

Which of the following is a type of computer network?

A
LAN
B
WAN
C
MAN
D
All of the above
Explanation and memory cue

LAN (Local Area Network), WAN (Wide Area Network), and MAN (Metropolitan Area Network) are all types of computer networks categorized by their geographic coverage. Therefore, 'All of the above' is the correct answer.

1458

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File Types And Extensions

easy
Computer Science

Which of the following file types have an 'mpg' extension?

A
Audio
B
Image
C
Video
D
Flash
Explanation and memory cue

Files with the 'mpg' extension are video files, typically MPEG video format. Therefore, option C (Video) is correct.

1459

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Practice MCQ

Computer Science

CRT is the technology used in a ____: Mouse Monitor CPU Trojan Horse

A
Mouse
B
Monitor
C
CPU
D
Trojan Horse
Explanation and memory cue

CRT (Cathode Ray Tube) technology is used in monitors to display images. It is not used in mice, CPUs, or Trojan horses.

1460

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File Types And Extensions

easy
Computer Science

The extension of Notepad files is ____:

A
.xls
B
.txt
C
.cdr
D
None of these
Explanation and memory cue

The default file extension for Notepad files is .txt, which stands for plain text files. Other options like .xls and .cdr correspond to Excel and CorelDRAW files respectively, so they are incorrect.