54
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:

Every set in the dotted decimal format of IP address is called

A) Subnet B) Octet
C) Subset D) IP set
 
Answer & Explanation Answer: B) Octet

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5 206
Q:

Find the odd statement out in relation to firewall.

A) Firewall can be a software B) Firewall can be a hardware
C) Firewall can be a combination of software & hardware D) Firewall protects computer from fire
 
Answer & Explanation Answer: C) Firewall can be a combination of software & hardware

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4 190
Q:

Multitasking system specifically refers to

A) More than one user B) More than one process
C) More than one hardware D) More than one IP address
 
Answer & Explanation Answer: B) More than one process

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3 157
Q:

In Microsoft Excel, Ctrl+ right 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: B) End of row

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2 167
Q:

In which generation of computer was the mechanical language for programming used?

A) First B) Second
C) Third D) Fourth
 
Answer & Explanation Answer: A) First

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2 181
Q:

Which of the following refers to the number of pixels per inch, printed on a page?

A) Print Margin B) Resolution
C) Filter D) Colour mode
 
Answer & Explanation Answer: B) Resolution

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16 377
Q:

Computers cannot work without

A) Scanner B) Internet
C) Mouse D) CPU
 
Answer & Explanation Answer: D) CPU

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21 448
Q:

Which of the following is NOT a storage device?

A) Hard Disk B) CD ROM
C) Flash Drive D) Modem
 
Answer & Explanation Answer: D) Modem

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