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WorksheetsNetworking and Memory Quiz
Total questions: 25
Worksheet time: 13mins
Which type of cable has the lowest data transfer rate and suffers the most from external interference, but is the cheapest option?
Coaxial Cable
Fiber Optic Cable
Twisted Pair Cable
HDMI Cable
What is the main purpose of the thin metal foil jacket in shielded twisted pair cables?
To increase cable length
To reduce external interference
To lower cost
To make the cable waterproof
Which of the following is NOT a function of a router?
Acting as a default gateway
Performing protocol translation
Restricting broadcasts to a LAN
Formatting hard drives
What is the main role of a gateway in networking?
To store frequently accessed web pages
To convert data packets between different protocols
To increase the speed of a LAN connection
To provide power to network devices
What happens when a collision is detected in an Ethernet network using CSMA/CD?
The device retransmits immediately without waiting
The device shuts down its network interface
The device sends a jam signal and waits a random time before retransmitting
The device permanently drops the frame
In the IP address 190.15.25.240 (a Class C address), which part represents the network ID?
240
190.15.25
190
25.240
Which of the following is a key advantage of IPv6 over IPv4?
It reduces address size to 32 bits
It uses decimal notation with dots
It eliminates the need for NAT and supports built-in authentication
It restricts the growth of the internet
What is the main purpose of subnetting in a network?
To convert IPv4 addresses into IPv6
To divide a large network into smaller, more manageable networks
To encrypt data transmitted over a LAN
To increase the physical length of Ethernet cables
Which of the following devices would typically use a public IP address?
A student's laptop connected to a home Wi-Fi network
A DNS server on the internet
A printer inside a university LAN
A smartphone connected to a private hotspot
Which of the following is a characteristic of RAM (Random Access Memory)?
It is non-volatile and stores data permanently
It is volatile and loses data when power is switched off
It cannot be written to, only read from
It is slower than secondary storage
Which of the following is a key characteristic of Dynamic RAM (DRAM)?
It has lower memory capacity than SRAM
It consumes more power than SRAM
It is more expensive to manufacture than SRAM
It must be refreshed regularly to maintain data
Why is SRAM often used in a computer's cache memory instead of DRAM?
Because SRAM is less expensive to manufacture than DRAM
Because SRAM does not require capacitors for storage
Because SRAM is much faster and does not need refreshing
Because SRAM has higher memory capacity than DRAM
Which of the following correctly describes a difference between DRAM and SRAM?
DRAM does not need to be refreshed, while SRAM does
DRAM is used mainly for cache, while SRAM is used for main memory
DRAM is cheaper and has higher capacity, while SRAM is faster and does not need refreshing
DRAM uses flip-flops, while SRAM uses capacitors
What is the main difference between PROM and EPROM?
PROM can be erased and rewritten many times, while EPROM can only be programmed once
PROM uses fuses that can only be burned once, while EPROM uses transistors that can be erased with UV light
PROM is programmed using UV light, while EPROM is programmed using electric current
PROM is mainly used in developing applications, while EPROM is common in RFID tags
Which of the following is a disadvantage of embedded systems?
They consume very little power
They are relatively low cost to make
They are difficult to upgrade to take advantage of new technology
They react very fast to changing input
What is the main reason why hard disk drives (HDDs) can suffer from slower data access over time?
Limited storage capacity on platters
Fragmentation of data across non-adjacent sectors
Too many read-write heads moving at once
Data being stored sequentially in tracks
Which of the following is an advantage of Solid State Drives (SSD) over Hard Disk Drives (HDD)?
SSDs have moving parts, making them cheaper to repair
SSDs consume more power and run hotter
SSDs provide faster access times and are more reliable
SSDs allow unlimited write operations without wear
In optical disks such as CDs and DVDs, data is stored as pits and bumps on the spiral track. How are these used during reading?
A blue laser melts the bumps to reveal data
The optical head detects changes in light reflection caused by pits and bumps
The bumps emit electrical signals directly to the processor
Pits and bumps are magnetised to represent 0s and 1s
What is the key difference between 3D printing (additive manufacturing) and traditional subtractive manufacturing methods?
3D printing builds objects layer by layer, while subtractive methods remove material to shape the object
3D printing melts solid blocks, while subtractive methods carve stone
3D printing can only use powdered plastic, while subtractive methods use metal
3D printing removes unwanted material, while subtractive methods build objects up
What is the correct sequence for converting digitised sound into audible sound through a loudspeaker?
Digital data → Amplifier → DAC → Loudspeaker
DAC → Loudspeaker → Amplifier → Digital data
Digital data → DAC → Amplifier → Loudspeaker
Amplifier → DAC → Digital data → Loudspeaker
Which sensor would be most suitable for switching street lighting on at night and off during the day?
Gas sensor
Light sensor
Acoustic/sound sensor
Pressure sensor
Which of the following is an example of a control application of sensors rather than a monitoring application?
Monitoring pollution levels in a river
Checking for intruders in a burglar alarm system
Controlling traffic lights at a road junction
Monitoring temperature levels in a car engine
What is the function of the Control Unit (CU) in the CPU?
To carry out arithmetic and logic operations
To hold data and instructions temporarily for quick access
To synchronise data flow by sending control signals and interpreting instructions
To permanently store programs and data
Which CPU register stores the address of the next instruction to be read and executed?
Program Counter (PC)
Current Instruction Register (CIR)
Memory Address Register (MAR)
Status Register (SR)
Which statement correctly describes the address bus in a computer system?
It is bidirectional and carries data between CPU and memory
It is unidirectional and carries memory addresses from CPU to memory
It is 8-bits wide and only carries control signals
It determines the word length that can be transported
