Computer Studies Past Questions

Question 251

waec 2015

Use the MS-Excel table below to answer questions 48 to 50.

	A	B	C	D
1	BOOKS SUPPLIED TO SENIOR HIGH SCHOOL
2	FORM	MATHS	ICT	ENGLISH LANG
3	SHS I	2456	6580	5678
4	SHS II	3450	4009	4400
5	SHS III	8765	4500	9000

The content of cell D3 is?     

A3450.    

B4400.      

C4500.   

D5678.

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Question 252

waec 2015

9\(_{10}\) is equivalent to X\(_8\), where X is?        

A7.       

B  10.   

C  11.   

D 12.

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Question 253

waec 2015

The conversion of 11001\(_2\), to base ten equals?     

A 20.       

B  25.   

C  28.     

D 30

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Question 254

waec 2015

In hexadecimal number system, B, D and F represent which of the following decimal numbers?             

A 11, 13 and 15 respectively.       

B 12, 14 and 15 respectively.      

C 13, 14 and 15 respectively.       

D 14, 16 and 17 respectively

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Question 255

waec 2015

Which of the following statements is true of free software? It   

A can be borrowed freely.     

B is a low-cost software:   

C is a free unlicensed software.     

D is a licensed software with permission to copy freely.

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Question 256

waec 2015

Which of the following is the main advantage of intellectual property right?           

ADiscouragement of sharing.        

B Discovery of brilliant persons.       

C Encouragement of innovations.        

Dmaximization of profit.

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Question 257

waec 2015

Computer ethics are important because they?       

Aensure identity theft.       

B regulate the privacy of messages only.          

Caddress piracy and comportment issues.             

D prevent copyright infringement on discretional basis.

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Question 258

waec 2015

Which of the following statements is true of encryption? It        

Aprovides complete privacy.           

Bprovides security of varying reliability.         

Cmakes messages un- readable by the recipient.           

D permits an individual to have access to another person's message.

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Question 259

waec 2015

A high level language can be converted to a machine language using?   

Aa compiler.   

Ban editor.   

C a utility program.   

Dan operating system

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Question 260

waec 2015

The part of the computer that holds the data and pro- grams for CPU processing is the?   

AAddress.     

B Register:     

CRandom Access Memory.   

DRead Only Memory

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Question 261

waec 2015

The term bus' width in data transfer refers to the?         

Anumber of wires in the bus.             

Bsize of the data movement.   

C number of bits of information the RAM can send to the CPU at the same time.        

Dnumber of wires in the bus that carry information to the processor at a time

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Question 262

waec 2015

The shortcut command used in restarting a computer is?       

A Ctrl+ S.   

B Ctrl+0.   

C Del+Alt+S.   

DAlt+Ctrl+Del.

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Question 263

waec 2015

Data loss in a computer cannot be prevented by the use of?       

Aantivirus.   

Bbackup.      

Cflash drive.      

Dpassword.

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Question 264

waec 2015

The computer keyboard key(s) that a user presses to move to the beginning of a current line of text is/are the?    

AEnter key.      

BHome key.      

CCtrl +B keys.   

D Ctrl+ Home keys.

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Question 265

waec 2015

Which of the following items changes shape depending on the task being performed?         

ARibbon       

BActive tab       

C Insertion point         

D Mouse pointer

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Question 266

waec 2015

In word processing, an efficient way to move the second paragraph and place it after the fourth paragraph is? 

A copy and paste.    

Bcopy, cut and paste. 

Ccut and paste.      

Dcut, copy and paste.

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Question 267

waec 2015

Which of the following is a valid e-mail address? 

A www.itbeginswithu.org     

B waeconline@yahoo.co.uk   

C www.waeconline.org   

Dwww.fine.gov.ng

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Question 268

waec 2015

Which of the following is not a network device?     

A Hub     

BModem     

CPort       

DRouter

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Question 269

waec 2015

When browsing on the internet, a possible reason for. the message "page not found" is that?       

A the weather is hot.           

B the web browser is fast.         

Cmultiple web pages are loading at the same time.               

D a connection between the client and server has been lost.

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Question 270

waec 2015

In a network, the workstation is usually.connected to the?       

AHub.           

BModem.        

CRouter.     

DSwitch.

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