Worksheets0478/01/SP/23 Computer Science Part 1
Total questions: 41
Worksheet time: 2hrs 3mins
Complete the binary register for 97.
(a)
Complete the binary register for 5C.
(a)
A MAC address is used to identify a device on a network.
TRUE
FALSE
A MAC address is not unique and can be shared by multiple devices.
TRUE
FALSE
A MAC address is dynamic and changes frequently.
TRUE
FALSE
A MAC address is assigned by the manufacturer.
TRUE
FALSE
The first part of a MAC address identifies the manufacturer.
TRUE
FALSE
The second part of a MAC address is a serial number that uniquely identifies the device.
TRUE
FALSE
A MAC address can be manually changed by a user at any time.
TRUE
FALSE
Does HTML/CSS use hexadecimal values to define colors?
Yes
No
Are error messages typically represented in hexadecimal format?
Yes
No
Do locations in memory use hexadecimal notation?
Yes
No
Is a memory dump commonly displayed in hexadecimal for debugging purposes?
Yes
No
Does an IPv6 address use hexadecimal values?
Yes
No
Does assembly language rely on hexadecimal notation for instructions and memory addresses?
Yes
No
Is a URL written in hexadecimal format?
Yes
No
Are ASCII and Unicode character encoding written in hexadecimal?
Yes
No
Complete the binary register to show its contents after this logical left shift.
(a)
Negative denary numbers can also be represented as binary using two’s complement. Complete the binary register for the denary value −54
(a)
A data packet contains a header that includes the destination address.
TRUE
FALSE
The payload of a data packet contains the actual data being transmitted.
TRUE
FALSE
The trailer of a data packet helps in error detection and signaling the end of the packet.
TRUE
FALSE
A data packet structure consists only of a header and a payload, with no trailer.
TRUE
FALSE
The originator’s address is found in the trailer of a data packet.
TRUE
FALSE
A data packet’s header does not contain the packet number.
TRUE
FALSE
The website hosts videos that users can stream. The company uploads new videos to the website. The videos are compressed before they are uploaded to the website. Which of the following statements is a benefit of compressing the videos?
Data is encrypted.
Duration of each video will be reduced.
Less storage space on the web server is required.
More bandwidth is required when viewing the videos.
Which two methods of compression can be used to compress videos?
Lossy and Lossless
Binary and Text-based
Static and Dynamic
ASCII and Unicode
Which security devices can help prevent a Distributed Denial of Service (DDoS) attack?
Firewall
Proxy server
USB hub
Graphics card
Every device connected to a network has a unique IP address.
TRUE
FALSE
An IP address can be either public or private.
TRUE
FALSE
IPv4 addresses consist of four groups of digits, while IPv6 addresses consist of eight groups.
TRUE
FALSE
In IPv6, "::" can replace groups of zeros to shorten the address format.
TRUE
FALSE
An IP address is always dynamic and cannot be static.
TRUE
FALSE
The values in an IP address are separated only by hyphens.
TRUE
FALSE
Which network component uses the IP address to send data only to its correct destination?
Router
Switch
Firewall
Hub
The website has a uniform resource locator (URL). An example of a URL is given. https://www.cambridgeassessment.org.uk/index.html
What is the name of the "https" section in a URL?
Domain Name
protocol
web page/file name
The website has a uniform resource locator (URL). An example of a URL is given. https://www.cambridgeassessment.org.uk/index.html
What is the name of "cambridgeassessment.org.uk" in a URL?
Domain Name
protocol
web page/file name
The website has a uniform resource locator (URL). An example of a URL is given. https://www.cambridgeassessment.org.uk/index.html
What is the name of "/index.html" in a URL?
Domain Name
protocol
web page/file name
Which three components are part of the central processing unit (CPU) in a computer with Von Neumann architecture?
Accumulator (ACC), Program Counter (PC), and Memory Address Register (MAR)
Hard Disk Drive (HDD), Solid State Drive (SSD), and Read Only Memory (ROM)
Random Access Memory (RAM), Sensor, and Hard Disk Drive (HDD)
Program Counter (PC), Random Access Memory (RAM), and Solid State Drive (SSD)
What is the purpose of a core in a CPU?
To store permanent data for long-term use
To manage external hardware devices like printers and scanners
To process an instruction and carry out a fetch-execute cycle
To provide additional storage space for applications
How does upgrading a computer to a dual-core CPU affect its performance?
It can process two instructions simultaneously (where suitable), increasing performance.
It reduces the amount of storage available on the hard drive.
It slows down processing speed due to higher power consumption.
It removes the ability to run multiple applications at the same time.
