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WorksheetsComputer Systems
Total questions: 100
Worksheet time: 50mins
Name
Class
Date
1.
An integrated circuit that contains all the functions of a central processing unit of a computer
a)
Arithmetic Logic Unit
b)
Control Unit
c)
Microprocessor
d)
CPUCPU
2.
The physical parts of the computer are called _______.
a)
software
b)
hardware
c)
computer parts
d)
computer case
3.
What is the small circuit board that controls all the work a computer does (the computer's brain) called?
a)
Hardware
b)
Peripherals
c)
Personal Computer
d)
Microprocessor
4.
What does this picture represent?
a)
Peripheral
b)
Microprocessor
c)
PC
d)
Password
5.
The CPU processes data
a)
True
b)
False
6.
The CPU would not work without the following component
a)
RAM
b)
Hard drive
c)
USB memory stick
d)
Graphics card
7.
Which two main components make up a CPU
a)
Control unit and Arithmetic Logic unit�
b)
Control unit and Processing unit
c)
Control unit and RAM
d)
Flash storage and Arithmetic Logic unit�
8.
ALU stands for
a)
Arithmetic Logic unit�
b)
Arithmetic Legal unit�
c)
Anti Logic unit�
d)
Arithmetic Logic undo
9.
The CPU needs access to the main memory and Cache memory
a)
True
b)
False
10.
Clock speed measures what?
a)
Speed at which instructions are fetched from main memory
b)
Time taken to perform a single Fetch-Decode-Execute cycle
c)
Number of Fetch-Decode-Execute cycles that can be completed in 1 sec
d)
Speed at which instructions are decoded
11.
What is the purpose of the memory address register?
a)
It memorises everything
b)
It keeps track of the instructions
c)
It holds the instructions to be carried out by the CPU
d)
It allows you to input something
12.
What is the purpose of the Memory Data Register (MDR)?
a)
Holds the location of where the data is to be stored / read from
b)
Holds memory
c)
Holds instructions
d)
It does nothing
13.
Which component is the Von Neumann Design concerned with?
a)
The CPU and RAM
b)
The CPU
c)
The RAM
d)
Secondary storage
14.
Which system are computers inside a larger system?
a)
General
b)
Dedicated
c)
Embedded
15.
Pick below the example of an embedded system
a)
tablet
b)
Washing Machine
c)
PC
d)
traffic lights
16.
Which main part of the CPU has overall control of the CPU?
a)
Arithmetic Logic Unit
b)
Cache
c)
Control Unit
17.
Which part of the CPU is the fast memory
a)
The control Unit
b)
The Arithmetic Logic Unit
c)
The Cache
18.
What cycle describes how the CPU carry's out instructions one after another.
a)
Decode-execute-fetch
b)
execute-decode-fetch
c)
fetch-decode-execute
d)
fetch-execute-decode
19.
Which is used as the main memory in a computer?
a)
RAM
b)
ROM
c)
Secondary Storage
20.
Which requires power to retain its data?
a)
non-volatile memory
b)
volatile memory
21.
Which memory tells the CPU how to boot up?
a)
RAM
b)
ROM
22.
Which storage have high capacity, reliable storage?
a)
Magnetic
b)
Optical
c)
Solid State
23.
Which storage has no moving parts?
a)
Magetic
b)
Optical
c)
Solid State
24.
Which storage uses a type of flash memory
a)
Magnetic
b)
Optical
c)
Solid State
25.
What does the acronym RAM stand for?
a)
Random Alignment Memory
b)
Read Access Memory
c)
Random Access Memory
d)
Read All Memory
26.
In terms of computer memory, what is meant by the term 'volatile'?
a)
It retains its content when power is cut
b)
It loses its contents when power is cut
c)
It is not stable and should not be used
d)
Memory chips can overheat
27.
Which statement best describes RAM?
a)
Fast, permanent storage
b)
Slow, volatile stoage
c)
Fast, volatile storage
d)
Slow, permanent storage
28.
What is usually held in the contents of RAM?
a)
BIOS and Boot sequence needed to start the computer
b)
Operating System and currently running programs
c)
Software programs stored within the computer
d)
Recently executed instructions in case they are needed again
29.
What is stored in Read Only Memory (ROM)?
a)
Recently opened programs
b)
Operating system and currently running programs
c)
BIOS and boot sequence (the computer's initial start-up process)
d)
The CPU's registers
30.
What is Virtual Memory?
a)
An additional memory slot located in one of the RAM ports
b)
A section of volatile memory created temporarily on the storage drive
c)
Memory stored in the 'cloud'
d)
Memory that doesn't exist inside the computer but on an external device such as a USB pen drive
31.
Which device is this?
a)
Optical Disk
b)
Hard Drive
c)
Flash Memory
d)
Magnetic Tape
32.
Which device is this?
a)
Optical Disk
b)
Hard Drive
c)
Flash Memory
d)
Magnetic Tape
33.
Which device is this?
a)
Optical Disk
b)
Hard Drive
c)
Flash Memory
d)
Magnetic Tape
34.
Which device is this?
a)
Optical Disk
b)
Hard Drive
c)
Flash Memory
d)
Magnetic Tape
35.
Which device would you use:
To store relatively large amounts of data in your home computer
To store relatively large amounts of data in your home computer
a)
Optical Disk
b)
Hard Drive
c)
Flash Memory
d)
Magnetic Tape
36.
Which device would you use:
If you needed storage that could be easily carried around
If you needed storage that could be easily carried around
a)
Optical Disk
b)
Hard Drive
c)
Flash Memory
d)
Magnetic Tape
37.
Which word means:
How likely the device is to break
How likely the device is to break
a)
Durability
b)
Capacity
c)
Portability
38.
A computer's external hard drive is often considered a _______ storage device
a)
A. primary
b)
B. secondary
c)
C. tertiary
d)
D. volatile
39.
It is an example of optical storage:
a)
Magnetic tape
b)
USB memory stick
c)
Blu-ray disks
d)
HDD
40.
It is an advantage of using cloud storage:
a)
If you have no internet connection, you have no access to your data.
b)
Can be expensive to set up.
c)
Security concerns.
d)
You can access your documents anywhere
41.
Why durability is important when choosing an appropriate storage media?
a)
Because it is important to take in consideration how resistant the media is to damage.
b)
Because it is important to consider how cheap the media cost.
42.
Normally used in digital cameras. ___ can hold thousands of jpg photographs.
a)
SD memory cards
b)
USB memory stick
c)
Magnetic tape
d)
CD
43.
Cloud Computing depend on?
a)
Mother Board
b)
Application Software
c)
Specific Hardware
d)
Internet and Web Services
44.
What is an advantage of Cloud Computing?
a)
Can access you files anywhere
b)
It is safer
c)
Can access files anywhere you have internet
d)
Expensive
45.
What extra things can you do on Cloud Computing?
a)
Use your computers in any whether
b)
Share Files
c)
It does your work for you
46.
What is a disadvantage of Cloud Computing?
a)
Free
b)
Never Breaks
c)
Hackers could hack your files
47.
What is a WAN ?
a)
Wide Area Network
b)
Wide Access Network
c)
Wider Allowance Networking
48.
What is a LAN?
a)
Local Area Network
b)
Local Access Network
c)
Localized Area Network
49.
Figure shows network topology .
Name the topology .
Name the topology .
a)
Tree topology
b)
Bus Topology
c)
Ring topology
d)
Star topology
50.
If there is a host failure happen in star topology and ring topology .
What will happen to the network ?
What will happen to the network ?
a)
network still running
b)
network still running but slow
c)
network fail
51.
Which network topology is this?
a)
Star
b)
Mesh
c)
Ring
d)
Bus
52.
Which network topology is this?
a)
Bus
b)
Ring
c)
Mesh
d)
Star
53.
What type of network is this?
a)
Bus
b)
Ring
c)
Star
d)
Mesh
54.
What type of network is this?
a)
Bus
b)
Ring
c)
Star
d)
Mesh
55.
How is database transferred across a network
a)
As it is
b)
packets
c)
files
d)
none of these
56.
Which of these is NOT part of the header?
a)
Packet Number
b)
Sender IP Address
c)
Size of Packet
d)
Name of File
57.
An advantage of Packet Switching is to transfer the file faster
a)
True
b)
False
58.
What is the correct order for sending a file?
a)
Split data into packets - label each packet - send packets down different routes - read the address of each packet - put packets back together
b)
Split data into packets - send packets down different routes - label each packet - read the address of each packet - put packets back together
59.
The person receiving the file
a)
Recipient
b)
Sender
60.
The person sending the file
a)
Recipient
b)
Sender
61.
Packets can get lost if they are sent down different routes
a)
True
b)
False
62.
Which piece of Packet Header data allows your computer to reassemble the data?
a)
Packet Number
b)
Recipient Address
c)
Size of Packet
63.
Which piece of Packet Header data ensures the packet goes to the correct computer?
a)
Packet Number
b)
Recipient Address
c)
Size of Packet
64.
Why is packet switching efficient?
a)
Small packets travel faster
b)
Some cables cannot handle larger packets
c)
Each packet is sent down the fastest route at that time
65.
Latency is a measure of the time it takes for a data packet to transfer over a network.
a)
True
b)
False
66.
What unit do we measure bandwidth with?
a)
bits of data per second
b)
milliseconds
c)
bits of data per millisecond
d)
bits of data
67.
Lossy compression is most commonly used with images, video & audio files.
a)
True
b)
False
68.
Which of the following is a benefit of lossy compression over lossless?
a)
File sizes will always be reduced, even when compressed multiple times.
b)
File quality is not harmed, e.g. images will look exactly the same.
c)
Files can be decompressed back to their original uncompressed form.
d)
File sizes are usually significantly smaller.
69.
What does "MAC" stand for in "MAC Address"?
a)
Media Access Control
b)
Mandatory Access Control
c)
Micro Access Control
d)
Media Access Certificate
70.
Which of these is usually encoded in a MAC address?
a)
Manufacturer's identification number
b)
X.509 SSL certificate
c)
Checksum of packet data
d)
IEEE 802 network segment index
71.
What does "NIC" stand for?
a)
Network Interface Controller
b)
National Internal Communication
c)
Network Interface Communication
d)
Native Interface Communication
72.
Where is a MAC address most likely to be stored?
a)
ROM
b)
RAM
c)
SDRAM
d)
CD-ROM
73.
What is split into equal sizes and sent accross the network?
a)
Packets
b)
Macs
c)
IP addresses
d)
Devices
74.
Which device is the MAC address hard coded in to ?
a)
Hub
b)
Switch
c)
Router
d)
Network interface card
75.
Which of these will delete the virus if it finds one?
a)
Firewall
b)
Anti-Virus
76.
What is the name for software designed to keep your computer running smoothly?
a)
Utility Software
b)
System Software
77.
What would a school firewall be used for?
a)
Blocking possibly dangerous websites
b)
Scanning student files
78.
What would be used to collect personal information from your computer?
a)
Spyware
b)
Defragmenter
79.
Which software reorganises your files in this way?
a)
Firewall
b)
Defragmenter
80.
a)
Encryption
b)
Compression
c)
Defragmentation
d)
Backup
81.
a)
Encryption
b)
Compression
c)
Defragmentation
d)
Backup
82.
This is the scrambling of data so that no one else can understand it.
This stops hackers from reading sensitive information
This stops hackers from reading sensitive information
a)
Encryption
b)
Compression
c)
Defragmentation
d)
Backup
83.
Uses algorithms to reduce the size of files. Makes it quicker and easier to transmit files over networks.
a)
Encryption
b)
Compression
c)
Defragmentation
d)
Backup
84.
Reduces size by permanently removing some of the data (sound / video / image files)
a)
LOSSY
b)
LOSSLESS
85.
Reduces size without deleting any of the data
a)
LOSSY
b)
LOSSLESS
86.
Images, Audio and Video uses this type of compression
a)
LOSSY
b)
LOSSLESS
87.
Text files and software uses this type of compression
a)
LOSSY
b)
LOSSLESS
88.
Software that help to keep your computer running efficiently like anti virus products are called?
a)
Web Sites
b)
Utility Programs
c)
Operating System
d)
Application Programs
89.
What operating system is this a symbol of?
a)
Mac OS X
b)
Linux
c)
Windows
90.
What is the purpose of an operating system?
a)
Manage software on computer
b)
Manage hardware on computer
c)
Manage all hardware & software on computer
91.
Instructions that accomplish a specific task.
a)
Server
b)
Application software
c)
System Software
d)
Driver
92.
Which of these is not a task of the Operating System?
a)
Writing information to files
b)
Opening, closing and moving windows on the screen
c)
Word processing
d)
Sending information about mouse clicks to an application
93.
When you receive an email from what seems to be a trustworthy source, asking you to log in or download something, but the link goes to a fake site, this is known as?
a)
Malware
b)
Adware
c)
Trojan
d)
Phishing scam
94.
If the same key is used to encrypt and decrypt a message, this is known as?
a)
Symmetric encryption
b)
Encryption doesn't exist!
c)
Asymmetric encryption
d)
Same-key encryption
95.
What type of key can be freely shared with anyone so that they can encrypt a message?
a)
Personal key
b)
Private key
c)
Free key
d)
Public key
96.
A specific encryption code
a)
Code
b)
Cipher
c)
Scramble
97.
“E-Waste” is short for “Electronic Waste”
a)
True
b)
False
98.
Computers can be recycled
a)
True
b)
False
99.
Social networking has caused an increase in electricity consumption
a)
True
b)
False
100.
Modern buildings use computers to reduce energy use
a)
True
b)
False
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