Q. What does the term 'encryption' refer to in network security?
-
A.
The process of compressing data
-
B.
The process of converting data into a coded format
-
C.
The process of backing up data
-
D.
The process of deleting data
Solution
Encryption is the process of converting data into a coded format to prevent unauthorized access.
Correct Answer:
B
— The process of converting data into a coded format
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Q. What does the term 'fabrication' refer to in the context of integrated circuits?
-
A.
The design process
-
B.
The manufacturing process
-
C.
The testing process
-
D.
The packaging process
Solution
Fabrication refers to the manufacturing process of creating integrated circuits on semiconductor wafers.
Correct Answer:
B
— The manufacturing process
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Q. What does the term 'fan-out' refer to in digital logic circuits?
-
A.
The number of inputs a gate can drive
-
B.
The number of outputs a gate can have
-
C.
The maximum load a gate can handle
-
D.
The distance between gates
Solution
Fan-out refers to the number of inputs that a single output can drive without degrading the signal.
Correct Answer:
A
— The number of inputs a gate can drive
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Q. What does the term 'fan-out' refer to in digital logic?
-
A.
The number of inputs a gate can drive
-
B.
The number of outputs a gate can have
-
C.
The maximum load a gate can handle
-
D.
The number of gates in a circuit
Solution
Fan-out refers to the number of inputs that a single output can drive without degrading the signal.
Correct Answer:
A
— The number of inputs a gate can drive
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Q. What does the term 'functional dependency' mean in the context of databases?
-
A.
One attribute uniquely determines another attribute
-
B.
Attributes are dependent on the database schema
-
C.
Data is stored in a hierarchical manner
-
D.
Data is replicated across multiple tables
Solution
Functional dependency means that one attribute uniquely determines another attribute in a relation.
Correct Answer:
A
— One attribute uniquely determines another attribute
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Q. What does the term 'handoff' refer to in wireless communication?
-
A.
Switching between different frequency bands
-
B.
Transferring a call from one cell tower to another
-
C.
Changing the encryption method
-
D.
Adjusting the transmission power
Solution
Handoff refers to the process of transferring an active call or data session from one cell tower to another as a user moves through the coverage area.
Correct Answer:
B
— Transferring a call from one cell tower to another
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Q. What does the term 'horizontal partitioning' refer to in distributed databases?
-
A.
Dividing a database into smaller databases based on rows
-
B.
Dividing a database into smaller databases based on columns
-
C.
Combining multiple databases into one
-
D.
Creating backups of the database
Solution
Horizontal partitioning refers to dividing a database into smaller databases based on rows, which can improve performance and manageability.
Correct Answer:
A
— Dividing a database into smaller databases based on rows
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Q. What does the term 'latency' refer to in memory and storage?
-
A.
The speed of data transfer
-
B.
The time delay before data transfer begins
-
C.
The amount of data that can be stored
-
D.
The power consumption of the device
Solution
Latency refers to the time delay before a transfer of data begins following an instruction for its transfer.
Correct Answer:
B
— The time delay before data transfer begins
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Q. What does the term 'pinch-off' refer to in a JFET?
-
A.
The maximum drain current
-
B.
The minimum gate voltage
-
C.
The point where the channel is fully depleted
-
D.
The threshold voltage for conduction
Solution
Pinch-off occurs when the gate voltage is sufficiently negative to deplete the channel of charge carriers, limiting the drain current.
Correct Answer:
C
— The point where the channel is fully depleted
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Q. What does the term 'programmable' in PLD refer to?
-
A.
The ability to amplify signals
-
B.
The ability to change the circuit configuration
-
C.
The ability to rectify signals
-
D.
The ability to store energy
Solution
The term 'programmable' indicates that the device can be configured by the user to perform specific logic functions.
Correct Answer:
B
— The ability to change the circuit configuration
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Q. What does the term 'programming' refer to in the context of PLDs?
-
A.
Writing software for the device
-
B.
Configuring the logic functions of the device
-
C.
Updating the firmware
-
D.
Designing the physical layout
Solution
In PLDs, 'programming' refers to configuring the logic functions of the device to perform specific tasks.
Correct Answer:
B
— Configuring the logic functions of the device
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Q. What does the term 'propagation delay' refer to in digital circuits?
-
A.
Time taken for a signal to travel
-
B.
Time taken for a circuit to reset
-
C.
Time taken for a signal to stabilize
-
D.
Time taken for power to reach the circuit
Solution
Propagation delay is the time taken for a signal to travel through a circuit from input to output.
Correct Answer:
A
— Time taken for a signal to travel
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Q. What does the term 'reconfigurable' mean in the context of PLDs?
-
A.
The ability to change the physical layout
-
B.
The ability to change the logic functions after manufacturing
-
C.
The ability to increase power consumption
-
D.
The ability to reduce size
Solution
In the context of PLDs, 'reconfigurable' means the ability to change the logic functions after manufacturing, allowing for flexibility in design.
Correct Answer:
B
— The ability to change the logic functions after manufacturing
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Q. What does the term 'sampling rate' refer to in digital signal processing?
-
A.
The number of bits used to represent each sample
-
B.
The frequency at which a signal is sampled
-
C.
The duration of each sample
-
D.
The total number of samples in a signal
Solution
The sampling rate is the frequency at which an analog signal is sampled to convert it into a digital signal.
Correct Answer:
B
— The frequency at which a signal is sampled
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Q. What does the term 'sampling rate' refer to?
-
A.
The number of bits per sample
-
B.
The frequency at which a signal is sampled
-
C.
The duration of each sample
-
D.
The total number of samples taken
Solution
The sampling rate is the frequency at which an analog signal is sampled to convert it into a digital signal.
Correct Answer:
B
— The frequency at which a signal is sampled
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Q. What does the term 'scaling' refer to in integrated circuit technology?
-
A.
Increasing the number of components
-
B.
Decreasing the size of components
-
C.
Improving power efficiency
-
D.
Enhancing signal speed
Solution
Scaling refers to the process of decreasing the size of components in integrated circuits, allowing for more transistors to fit on a chip.
Correct Answer:
B
— Decreasing the size of components
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Q. What does the term 'VPN' stand for in network security?
-
A.
Virtual Private Network
-
B.
Virtual Public Network
-
C.
Variable Private Network
-
D.
Virtual Protected Network
Solution
VPN stands for Virtual Private Network, which creates a secure connection over a less secure network, such as the Internet.
Correct Answer:
A
— Virtual Private Network
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Q. What happens to ports in a switch that are in a blocking state in STP?
-
A.
They forward traffic
-
B.
They drop traffic
-
C.
They listen for BPDUs
-
D.
They become active
Solution
Ports in a blocking state do not forward traffic; they drop it to prevent loops.
Correct Answer:
B
— They drop traffic
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Q. What happens to redundant links in a network using Spanning Tree Protocol?
-
A.
They are utilized for load balancing
-
B.
They are blocked to prevent loops
-
C.
They are automatically configured
-
D.
They are converted to trunk links
Solution
Redundant links are blocked in STP to prevent loops while still allowing for failover if the active link fails.
Correct Answer:
B
— They are blocked to prevent loops
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Q. What happens to the bits in a shift register when a shift operation is performed?
-
A.
They are deleted
-
B.
They are copied
-
C.
They are shifted to the next position
-
D.
They are reversed
Solution
During a shift operation, the bits in a shift register are shifted to the next position, either left or right.
Correct Answer:
C
— They are shifted to the next position
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Q. What happens to the current in a step-down transformer?
-
A.
It increases
-
B.
It decreases
-
C.
It remains the same
-
D.
It becomes zero
Solution
In a step-down transformer, the current increases while the voltage decreases.
Correct Answer:
A
— It increases
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Q. What happens to the current in an RL circuit when the switch is closed?
-
A.
It instantly reaches maximum value
-
B.
It gradually increases
-
C.
It decreases to zero
-
D.
It remains constant
Solution
In an RL circuit, when the switch is closed, the current gradually increases due to the inductor's opposition to changes in current.
Correct Answer:
B
— It gradually increases
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Q. What happens to the current in the secondary winding of a step-down transformer?
-
A.
It increases
-
B.
It decreases
-
C.
It remains the same
-
D.
It becomes zero
Solution
In a step-down transformer, the current in the secondary winding increases as the voltage decreases, maintaining power balance.
Correct Answer:
A
— It increases
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Q. What happens to the current in the secondary winding of a transformer if the load resistance decreases?
-
A.
It increases
-
B.
It decreases
-
C.
It remains constant
-
D.
It becomes zero
Solution
If the load resistance decreases, the current in the secondary winding of a transformer increases.
Correct Answer:
A
— It increases
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Q. What happens to the current through an inductor when the voltage is suddenly removed?
-
A.
It instantly drops to zero
-
B.
It continues to flow for a short time
-
C.
It reverses direction
-
D.
It increases indefinitely
Solution
Inductors resist changes in current, so when voltage is removed, the current continues to flow for a short time.
Correct Answer:
B
— It continues to flow for a short time
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Q. What happens to the data in a shift register when it is reset?
-
A.
Data is preserved
-
B.
Data is shifted out
-
C.
Data is cleared
-
D.
Data is inverted
Solution
When a shift register is reset, the data is cleared.
Correct Answer:
C
— Data is cleared
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Q. What happens to the drain current (Id) in a MOSFET when the gate voltage is increased beyond the threshold voltage?
-
A.
Id decreases
-
B.
Id remains constant
-
C.
Id increases
-
D.
Id becomes zero
Solution
When the gate voltage exceeds the threshold voltage, the drain current (Id) increases as the channel becomes more conductive.
Correct Answer:
C
— Id increases
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Q. What happens to the energy stored in an inductor when the current through it is suddenly interrupted?
-
A.
It is dissipated as heat
-
B.
It is stored indefinitely
-
C.
It is released as a voltage spike
-
D.
It is converted to light
Solution
When the current through an inductor is interrupted, the energy is released as a voltage spike.
Correct Answer:
C
— It is released as a voltage spike
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Q. What happens to the impedance of a parallel RLC circuit at resonance?
-
A.
It becomes infinite
-
B.
It becomes zero
-
C.
It is at its minimum value
-
D.
It is at its maximum value
Solution
At resonance, the impedance of a parallel RLC circuit becomes infinite due to the cancellation of reactive components.
Correct Answer:
A
— It becomes infinite
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Q. What happens to the impedance of a series RLC circuit at resonance?
-
A.
It becomes zero
-
B.
It becomes infinite
-
C.
It is at its minimum value
-
D.
It is at its maximum value
Solution
At resonance, the impedance of a series RLC circuit is at its minimum value.
Correct Answer:
C
— It is at its minimum value
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