1(a). Convert the binary value 1110 0011 into hexadecimal.
[2]
(b). Convert the denary value 105 into an 8 bit binary number.
[2]
(c). Give two reasons why computer scientists use hexadecimal to represent numbers instead of binary.
1
2
[2]
(d). Show the outcome of a right shift of three places on the binary value 0111 1000
[1]
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,2(a). The following logo is stored as a bitmap image. Each box represents one pixel, with three different colours being used in
the image.
State what is meant by the term image resolution.
[1]
(b). Calculate the fewest number of bits that could be used to store the logo as a bitmap image. You must show your working.
[4]
(c). Give two ways that the file size of the image could be reduced.
1
2
[2]
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, (d). Metadata is sometimes stored alongside images.
i. State what is meant by the term metadata.
[1]
ii. Give one example of metadata that could be stored alongside the logo.
[1]
3. Dru writes the following program using a high-level language.
01 function newscore(a,b)
02 temp = a*b
03 temp = temp + 1
04 return temp
05 endfunction
06 score = 18
07 name = "Dru"
08 print (score)
09 print ("name")
10 print (newscore(score,2))
11 print (score)
Describe how a character set is used to represent the string value stored in the variable name
[2]
4(a). Naomi’s office has five computers connected into a Local Area Network (LAN). There is also one printer that all the
devices can print to.
The LAN is set up as a mesh topology.
Draw connections to show one way that the devices could be connected using a mesh topology.
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, [2]
(b). Ethernet cables are used within the office building.
Tick one box in each row to identify if the statement about Ethernet is True or False.
Statement True False
Ethernet is a protocol
Ethernet uses wireless data transmission
Ethernet can transmit data at speeds of up to 100 Gbits per second
Ethernet is a protocol within the TCP/ IP stack
[4]
(c). Computer 1 enters the URL www.ocr.org.uk into a web browser. This is then converted into the IP address of the
webserver that hosts the website.
Explain how the URL www.ocr.org.uk is converted into the IP address.
[3]
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[2]
(b). Convert the denary value 105 into an 8 bit binary number.
[2]
(c). Give two reasons why computer scientists use hexadecimal to represent numbers instead of binary.
1
2
[2]
(d). Show the outcome of a right shift of three places on the binary value 0111 1000
[1]
© OCR 2023. You may photocopy this Page 1 of 177 Created in ExamBuilder
page.
,2(a). The following logo is stored as a bitmap image. Each box represents one pixel, with three different colours being used in
the image.
State what is meant by the term image resolution.
[1]
(b). Calculate the fewest number of bits that could be used to store the logo as a bitmap image. You must show your working.
[4]
(c). Give two ways that the file size of the image could be reduced.
1
2
[2]
© OCR 2023. You may photocopy this Page 2 of 177 Created in ExamBuilder
page.
, (d). Metadata is sometimes stored alongside images.
i. State what is meant by the term metadata.
[1]
ii. Give one example of metadata that could be stored alongside the logo.
[1]
3. Dru writes the following program using a high-level language.
01 function newscore(a,b)
02 temp = a*b
03 temp = temp + 1
04 return temp
05 endfunction
06 score = 18
07 name = "Dru"
08 print (score)
09 print ("name")
10 print (newscore(score,2))
11 print (score)
Describe how a character set is used to represent the string value stored in the variable name
[2]
4(a). Naomi’s office has five computers connected into a Local Area Network (LAN). There is also one printer that all the
devices can print to.
The LAN is set up as a mesh topology.
Draw connections to show one way that the devices could be connected using a mesh topology.
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page.
, [2]
(b). Ethernet cables are used within the office building.
Tick one box in each row to identify if the statement about Ethernet is True or False.
Statement True False
Ethernet is a protocol
Ethernet uses wireless data transmission
Ethernet can transmit data at speeds of up to 100 Gbits per second
Ethernet is a protocol within the TCP/ IP stack
[4]
(c). Computer 1 enters the URL www.ocr.org.uk into a web browser. This is then converted into the IP address of the
webserver that hosts the website.
Explain how the URL www.ocr.org.uk is converted into the IP address.
[3]
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page.
