65
Q:

CD-ROM is a semiconductor memory.

 

A) TRUE B) FALSE

Answer:   B) FALSE



Explanation:

"CD-ROM is a semiconductor memory" is a FALSE statement.

 

Compact Disc-Read-Only Memory, a type of optical disk capable of storing large amounts of data -- up to 1GB, although the most common size is 650MB (megabytes). A single CD-ROM has the storage capacity of 700 floppy disks, enough memory to store about 300,000 textpages.

 

Semiconductor memory is a type of semiconductor device tasked with storing data. There are two electronic data storage mediums that we can utilize, magnetic or optical.

 

Magnetic storage:

* Stores data in magnetic form.

* Affected by magnetic fields.

* Has high storage capacity.

* Doesn't use a laser to read/write data.

* Magnetic storage devices are; Hard disk , Floppy disk, Magnetic tape etc.

 

Optical storage:

* Stores data optically, uses laser to read/write.

* Not affected by magnetic fields.

* Has less storage than a hard disk.

* Data accessing is high, compared to a floppy disc.

* Optical storage devices are; CD-ROM,CD-R, CD-RW, DVD etc.

 

There is also volatile memory. This is memory that loses its data once power is cut off, while non-volatile memory retains data even without power.

Subject: Computer
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Q:

In Microsoft Excel , Ctrl+ down arrow key leads to _____________ cell movement on spreadsheet.

 

A) End of column B) End of row
C) One cell Left D) One cell right
 
Answer & Explanation Answer: A) End of column

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11 2798
Q:

The function of BIOS is to

 

A) Initialize the system hardware components B) Update the system
C) Ensure system performance D) Save the system from crashing
 
Answer & Explanation Answer: A) Initialize the system hardware components

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9 2763
Q:

Which of the following does not belong to the group?

A) UNIX B) MS-DOS
C) WINDOWS D) FIREWALL
 
Answer & Explanation Answer: D) FIREWALL

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8 518
Q:

In HTML, ______________ is at the bottom of the page and usually contains disclaimers, copyright information etc.

 

A) Header area B) Menu bar
C) Body of the page D) Footer area
 
Answer & Explanation Answer: D) Footer area

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6 5533
Q:

IP address refers to

A) A numerical network label B) A dynamic link between two computers
C) A group of networks D) Digital 'know your client'
 
Answer & Explanation Answer: A) A numerical network label

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11 505
Q:

In Microsoft Word, _______ provides options to switch between Normal, Web Layout, Print Layout, Outline and Reading Views.

 

A) Standard tool bar B) View Buttons
C) Formatting tool bar D) Tab stop
 
Answer & Explanation Answer: B) View Buttons

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11 531
Q:

Ravi, Rohan and Rajesh alone can complete a work in 10, 12 and 15 days respectively. In how many days can the work be completed, if all three work together?

A) 4 days B) 5 days
C) 3 days D) 8 days
 
Answer & Explanation Answer: A) 4 days

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12 1033
Q:

An example of Full Duplex communication channel.

A) Radio Broadcasting B) Television Broadcasting
C) Walkie-Talkie D) Telephone conversation
 
Answer & Explanation Answer: D) Telephone conversation

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