Q. What is the main advantage of using an FIR filter over an IIR filter?
A.
FIR filters are easier to implement
B.
FIR filters can have a linear phase response
C.
FIR filters require less computational power
D.
FIR filters are always more efficient
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Solution
FIR filters can be designed to have a linear phase response, which preserves the wave shape of filtered signals.
Correct Answer:
B
— FIR filters can have a linear phase response
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Q. What is the main advantage of using an instrumentation amplifier?
A.
High input impedance and low output impedance
B.
Ability to amplify small differential signals in the presence of noise
C.
Simple design and low cost
D.
Wide bandwidth
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Solution
An instrumentation amplifier is designed to amplify small differential signals while rejecting common-mode noise, making it ideal for sensor applications.
Correct Answer:
B
— Ability to amplify small differential signals in the presence of noise
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Q. What is the main advantage of using an integrator circuit with an op-amp?
A.
It provides a constant output voltage
B.
It can convert a square wave to a triangular wave
C.
It amplifies high-frequency signals
D.
It filters out low-frequency noise
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Solution
An integrator circuit converts a square wave input into a triangular wave output by integrating the input signal over time.
Correct Answer:
B
— It can convert a square wave to a triangular wave
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Q. What is the main advantage of using BJTs over FETs?
A.
Higher input impedance
B.
Higher current gain
C.
Lower power consumption
D.
Better thermal stability
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Solution
BJTs typically offer higher current gain compared to FETs, making them suitable for certain amplification applications.
Correct Answer:
B
— Higher current gain
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Q. What is the main advantage of using CMOS technology in digital circuits?
A.
High speed
B.
Low power consumption
C.
High cost
D.
Complex design
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Solution
The main advantage of CMOS technology is its low power consumption.
Correct Answer:
B
— Low power consumption
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Q. What is the main advantage of using FETs in semiconductor memory?
A.
Higher power consumption
B.
Lower input impedance
C.
Higher input impedance
D.
More complex fabrication
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Solution
FETs have a higher input impedance, which makes them suitable for low-power applications in semiconductor memory.
Correct Answer:
C
— Higher input impedance
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Q. What is the main advantage of using indexes in a database?
A.
To reduce data redundancy
B.
To speed up data retrieval
C.
To enforce data integrity
D.
To simplify database design
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Solution
Indexes are used to speed up data retrieval operations by providing quick access paths to the data.
Correct Answer:
B
— To speed up data retrieval
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Q. What is the main advantage of using indexing in a data warehouse?
A.
Increased data redundancy
B.
Faster query performance
C.
Simplified data modeling
D.
Reduced storage requirements
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Solution
Indexing improves query performance by allowing the database to find data more quickly, which is crucial in a data warehouse environment.
Correct Answer:
B
— Faster query performance
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Q. What is the main advantage of using indexing in a database?
A.
Increases data redundancy
B.
Improves data integrity
C.
Speeds up data retrieval
D.
Simplifies database design
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Solution
Indexing improves data retrieval speed by allowing the database to find data more quickly.
Correct Answer:
C
— Speeds up data retrieval
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Q. What is the main advantage of using integrated circuits over discrete components?
A.
Higher power consumption
B.
Larger size
C.
Lower cost and increased reliability
D.
More complex design
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Solution
Integrated circuits offer lower cost and increased reliability due to their compact size and reduced number of interconnections.
Correct Answer:
C
— Lower cost and increased reliability
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Q. What is the main advantage of using MSI circuits over SSI circuits?
A.
Lower cost
B.
Higher speed
C.
Greater integration density
D.
Simpler design
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Solution
The main advantage of MSI circuits over SSI circuits is greater integration density, allowing more functions in a smaller space.
Correct Answer:
C
— Greater integration density
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Q. What is the main advantage of using MSI circuits?
A.
Lower power consumption
B.
Higher speed
C.
Reduced size and complexity
D.
Increased cost
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Solution
The main advantage of MSI circuits is the reduced size and complexity, allowing for more compact designs.
Correct Answer:
C
— Reduced size and complexity
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Q. What is the main advantage of using NAT in a home network?
A.
Increased bandwidth
B.
Enhanced security
C.
Simplified network configuration
D.
Direct access to the internet
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Solution
One of the main advantages of using NAT in a home network is enhanced security, as it hides internal IP addresses from external networks.
Correct Answer:
B
— Enhanced security
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Q. What is the main advantage of using OSPF over EIGRP?
A.
Faster convergence
B.
Less bandwidth usage
C.
Scalability
D.
Simplicity of configuration
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Solution
OSPF is generally considered more scalable than EIGRP, especially in larger networks, due to its hierarchical design and area segmentation.
Correct Answer:
C
— Scalability
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Q. What is the main advantage of using PLDs over fixed logic devices?
A.
Lower cost
B.
Higher speed
C.
Flexibility in design
D.
Simplicity of use
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Solution
PLDs offer flexibility in design, allowing users to modify the logic functions as needed.
Correct Answer:
C
— Flexibility in design
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Q. What is the main advantage of using SSDs over HDDs?
A.
Lower cost
B.
Higher durability
C.
Larger storage capacity
D.
Slower access times
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Solution
The main advantage of SSDs over HDDs is higher durability, as SSDs have no moving parts and are less prone to mechanical failure.
Correct Answer:
B
— Higher durability
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Q. What is the main challenge of concurrency control in distributed databases?
A.
Ensuring data is stored in a single location
B.
Managing transactions across multiple nodes
C.
Reducing the size of the database
D.
Simplifying the database schema
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Solution
The main challenge of concurrency control in distributed databases is managing transactions across multiple nodes to prevent conflicts and ensure data integrity.
Correct Answer:
B
— Managing transactions across multiple nodes
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Q. What is the main characteristic of a depletion-mode FET?
A.
It is normally on
B.
It is normally off
C.
It has a negative resistance
D.
It requires a positive gate voltage to conduct
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Solution
Depletion-mode FETs are normally on, meaning they conduct current without any gate voltage applied.
Correct Answer:
A
— It is normally on
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Q. What is the main characteristic of a FET?
A.
Current-controlled device
B.
Voltage-controlled device
C.
Power-controlled device
D.
Temperature-controlled device
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Solution
FETs (Field Effect Transistors) are voltage-controlled devices, where the output current is controlled by the voltage applied to the gate terminal.
Correct Answer:
B
— Voltage-controlled device
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Q. What is the main characteristic of a P-N junction in semiconductor physics?
A.
It allows current to flow in both directions
B.
It creates a depletion region
C.
It acts as a capacitor
D.
It has infinite resistance
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Solution
A P-N junction creates a depletion region where charge carriers are absent, which is crucial for its rectifying behavior.
Correct Answer:
B
— It creates a depletion region
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Q. What is the main characteristic of a Zener diode?
A.
It can amplify signals
B.
It allows current to flow in both directions
C.
It maintains a constant voltage across it
D.
It is used for switching applications
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Solution
Zener diodes are designed to maintain a constant voltage across them when reverse-biased, making them useful for voltage regulation.
Correct Answer:
C
— It maintains a constant voltage across it
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Q. What is the main characteristic of combinational logic circuits?
A.
Output depends on past inputs
B.
Output depends only on current inputs
C.
Output is always constant
D.
Output is random
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Solution
In combinational logic circuits, the output depends only on the current inputs, not on past inputs.
Correct Answer:
B
— Output depends only on current inputs
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Q. What is the main difference between CPLD and FPGA?
A.
CPLDs are more complex than FPGAs
B.
FPGAs have more logic resources than CPLDs
C.
CPLDs are used for high-speed applications
D.
FPGAs are less expensive than CPLDs
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Solution
The main difference is that FPGAs typically have more logic resources and are better suited for complex designs compared to CPLDs.
Correct Answer:
B
— FPGAs have more logic resources than CPLDs
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Q. What is the main difference between NPN and PNP transistors?
A.
NPN transistors have a positive collector
B.
PNP transistors have a negative emitter
C.
NPN transistors use electrons as charge carriers
D.
PNP transistors are always off
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Solution
NPN transistors use electrons as charge carriers, while PNP transistors use holes.
Correct Answer:
C
— NPN transistors use electrons as charge carriers
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Q. What is the main difference between SR and JK Flip-Flops?
A.
JK Flip-Flop has no invalid state
B.
SR Flip-Flop has a toggle feature
C.
JK Flip-Flop is slower
D.
SR Flip-Flop can only set or reset
Show solution
Solution
The main difference is that the JK Flip-Flop does not have an invalid state when both inputs are high, unlike the SR Flip-Flop.
Correct Answer:
A
— JK Flip-Flop has no invalid state
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Q. What is the main difference between synchronous and asynchronous counters?
A.
Synchronous counters count faster
B.
Asynchronous counters have a delay
C.
Synchronous counters are simpler
D.
Asynchronous counters are more accurate
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Solution
Asynchronous counters have a propagation delay due to the ripple effect, while synchronous counters change states simultaneously.
Correct Answer:
B
— Asynchronous counters have a delay
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Q. What is the main disadvantage of using a transformer?
A.
High cost
B.
Size and weight
C.
Limited frequency response
D.
Low efficiency
Show solution
Solution
One of the main disadvantages of using a transformer is its size and weight, especially for high power applications.
Correct Answer:
B
— Size and weight
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Q. What is the main disadvantage of using CMOS logic?
A.
High power consumption
B.
Complex design
C.
Susceptibility to noise
D.
Slower than TTL
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Solution
CMOS logic can be more complex to design due to the need for complementary pairs of transistors.
Correct Answer:
C
— Susceptibility to noise
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Q. What is the main disadvantage of using NAT?
A.
It simplifies network configuration
B.
It can complicate certain protocols that require end-to-end connectivity
C.
It enhances security
D.
It allows for IP address conservation
Show solution
Solution
The main disadvantage of NAT is that it can complicate protocols that require end-to-end connectivity, such as VoIP and some peer-to-peer applications.
Correct Answer:
B
— It can complicate certain protocols that require end-to-end connectivity
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Q. What is the main function of a DBMS architecture?
A.
To provide a user interface for data entry
B.
To manage data storage and retrieval
C.
To perform data analysis
D.
To create reports
Show solution
Solution
The main function of a DBMS architecture is to manage data storage and retrieval, ensuring efficient access and manipulation of data.
Correct Answer:
B
— To manage data storage and retrieval
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