Q. What is the output state of a D flip-flop when the clock signal transitions from low to high?
-
A.
It holds the previous state
-
B.
It resets to zero
-
C.
It takes the value of the D input
-
D.
It toggles its state
Solution
A D flip-flop captures the value of the D input on the rising edge of the clock signal and holds that value until the next clock transition.
Correct Answer:
C
— It takes the value of the D input
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Q. What is the output state of a D Flip-Flop when the D input is 0 at the clock edge?
-
A.
1
-
B.
0
-
C.
Toggle
-
D.
Indeterminate
Solution
The output of a D Flip-Flop will be 0 when the D input is 0 at the clock edge.
Correct Answer:
B
— 0
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Q. What is the output state of a D flip-flop when the D input is low at the clock edge?
-
A.
High
-
B.
Low
-
C.
Toggle
-
D.
Undefined
Solution
The output state of a D flip-flop will be low when the D input is low at the clock edge.
Correct Answer:
B
— Low
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Q. What is the output state of a JK flip-flop when both J and K inputs are high?
-
A.
Set state
-
B.
Reset state
-
C.
Toggle state
-
D.
No change
Solution
When both J and K inputs are high, the JK flip-flop toggles its output state.
Correct Answer:
C
— Toggle state
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Q. What is the output voltage of a non-inverting op-amp with a gain of 10 and an input voltage of 1V?
-
A.
1V
-
B.
5V
-
C.
10V
-
D.
0.1V
Solution
The output voltage of a non-inverting op-amp with a gain of 10 and an input voltage of 1V is 10V.
Correct Answer:
C
— 10V
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Q. What is the output voltage of an ideal op-amp when the input voltage is zero?
-
A.
Zero volts
-
B.
Equal to the supply voltage
-
C.
Equal to the input voltage
-
D.
Infinite volts
Solution
An ideal op-amp will output zero volts when the input voltage is zero, consistent with Ohm's Law.
Correct Answer:
A
— Zero volts
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Q. What is the output voltage of an operational amplifier when the input voltage is zero and the op-amp is powered?
-
A.
0V
-
B.
Positive saturation voltage
-
C.
Negative saturation voltage
-
D.
Depends on the circuit configuration
Solution
The output voltage of an operational amplifier with zero input voltage depends on the circuit configuration and can be in saturation.
Correct Answer:
D
— Depends on the circuit configuration
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Q. What is the primary advantage of CMOS logic over TTL logic?
-
A.
Higher speed
-
B.
Lower power consumption
-
C.
Greater noise immunity
-
D.
Simpler design
Solution
CMOS logic consumes significantly less power than TTL logic, especially when in a static state.
Correct Answer:
B
— Lower power consumption
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Q. What is the primary advantage of CMOS logic over TTL?
-
A.
Higher speed
-
B.
Lower power consumption
-
C.
Greater noise immunity
-
D.
Simpler design
Solution
CMOS logic consumes significantly less power than TTL logic, especially when in a static state.
Correct Answer:
B
— Lower power consumption
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Q. What is the primary advantage of using a PLD?
-
A.
Lower cost than fixed-function devices
-
B.
Higher performance than microcontrollers
-
C.
Flexibility to change logic functions after manufacturing
-
D.
Easier to design than ASICs
Solution
The primary advantage of using a PLD is the flexibility to change logic functions after manufacturing, allowing for rapid prototyping.
Correct Answer:
C
— Flexibility to change logic functions after manufacturing
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Q. What is the primary advantage of using a synchronous counter?
-
A.
Simplicity in design
-
B.
Faster operation
-
C.
Lower power consumption
-
D.
Easier to implement
Solution
Synchronous counters operate faster because all flip-flops are triggered simultaneously.
Correct Answer:
B
— Faster operation
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Q. What is the primary advantage of using fiber optic cables in WANs?
-
A.
Lower cost
-
B.
Higher bandwidth and longer distance
-
C.
Easier installation
-
D.
Less susceptibility to interference
Solution
Fiber optic cables provide higher bandwidth and can transmit data over longer distances compared to other media, making them ideal for WANs.
Correct Answer:
B
— Higher bandwidth and longer distance
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Q. What is the primary advantage of using MSI circuits?
-
A.
Lower power consumption
-
B.
Increased complexity
-
C.
Reduced size and cost
-
D.
Higher speed
Solution
The primary advantage of MSI circuits is reduced size and cost due to the integration of multiple functions on a single chip.
Correct Answer:
C
— Reduced size and cost
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Q. What is the primary advantage of using Object-Oriented Databases over relational databases?
-
A.
Better performance for simple queries
-
B.
Ability to handle complex data relationships
-
C.
Easier to learn for SQL users
-
D.
More efficient storage of flat data
Solution
Object-Oriented Databases excel in handling complex data relationships, making them suitable for applications with intricate data structures.
Correct Answer:
B
— Ability to handle complex data relationships
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Q. What is the primary advantage of using parallel circuits in electronic devices?
-
A.
Increased voltage
-
B.
Increased current capacity
-
C.
Redundancy and reliability
-
D.
Simplicity in design
Solution
The primary advantage of using parallel circuits is redundancy and reliability; if one component fails, the others can still function.
Correct Answer:
C
— Redundancy and reliability
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Q. What is the primary advantage of using series-parallel configurations in circuits?
-
A.
Increased voltage only
-
B.
Increased current only
-
C.
Increased power handling
-
D.
Decreased complexity
Solution
Series-parallel configurations allow for increased power handling by combining the benefits of both series and parallel connections.
Correct Answer:
C
— Increased power handling
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Q. What is the primary application of inductors in power supply circuits?
-
A.
Filtering
-
B.
Rectification
-
C.
Amplification
-
D.
Switching
Solution
Inductors are primarily used for filtering in power supply circuits.
Correct Answer:
A
— Filtering
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Q. What is the primary benefit of using VLANs?
-
A.
Increased physical security
-
B.
Reduced broadcast traffic
-
C.
Higher data transfer rates
-
D.
Simplified network topology
Solution
VLANs reduce broadcast traffic by segmenting a network into smaller, isolated groups, which improves overall network performance.
Correct Answer:
B
— Reduced broadcast traffic
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Q. What is the primary benefit of using VLSM (Variable Length Subnet Masking)?
-
A.
Simplifies routing tables
-
B.
Reduces IP address wastage
-
C.
Increases network speed
-
D.
Enhances security
Solution
VLSM allows for subnets of different sizes, which helps to reduce IP address wastage by allocating only as many addresses as needed for each subnet.
Correct Answer:
B
— Reduces IP address wastage
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Q. What is the primary characteristic of a common-emitter BJT configuration?
-
A.
Voltage gain greater than one
-
B.
Current gain less than one
-
C.
Inverted output
-
D.
No phase shift
Solution
The common-emitter BJT configuration provides an inverted output signal.
Correct Answer:
C
— Inverted output
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Q. What is the primary characteristic of a FET in a parallel configuration?
-
A.
It can only operate in saturation
-
B.
It allows for high input impedance
-
C.
It requires a constant voltage
-
D.
It behaves like a short circuit
Solution
A FET in a parallel configuration allows for high input impedance, making it suitable for various applications.
Correct Answer:
B
— It allows for high input impedance
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Q. What is the primary characteristic of a log amplifier using an op-amp?
-
A.
It produces a linear output for linear input
-
B.
It outputs a logarithmic function of the input voltage
-
C.
It filters out high-frequency signals
-
D.
It provides gain for low-level signals
Solution
A log amplifier outputs a logarithmic function of the input voltage, which is useful in applications requiring exponential scaling.
Correct Answer:
B
— It outputs a logarithmic function of the input voltage
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Q. What is the primary characteristic of a rectifier in a series circuit?
-
A.
To convert AC to DC
-
B.
To amplify signals
-
C.
To increase frequency
-
D.
To decrease voltage
Solution
A rectifier's primary function is to convert alternating current (AC) to direct current (DC) in series circuits.
Correct Answer:
A
— To convert AC to DC
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Q. What is the primary characteristic of a rectifier in a series-parallel circuit?
-
A.
It converts AC to DC
-
B.
It amplifies AC signals
-
C.
It filters noise from signals
-
D.
It stores energy
Solution
Rectifiers are designed to convert alternating current (AC) to direct current (DC) in circuits.
Correct Answer:
A
— It converts AC to DC
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Q. What is the primary characteristic of a rectifier?
-
A.
It converts AC to DC
-
B.
It amplifies signals
-
C.
It stores energy
-
D.
It regulates voltage
Solution
Rectifiers are designed to convert alternating current (AC) into direct current (DC).
Correct Answer:
A
— It converts AC to DC
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Q. What is the primary characteristic of a Schottky diode?
-
A.
High reverse breakdown voltage
-
B.
Low forward voltage drop
-
C.
High current gain
-
D.
High thermal stability
Solution
A Schottky diode is known for its low forward voltage drop, which allows for faster switching speeds and lower power loss.
Correct Answer:
B
— Low forward voltage drop
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Q. What is the primary characteristic of a series rectifier circuit?
-
A.
It allows AC to pass through
-
B.
It converts AC to DC
-
C.
It increases the frequency of the input signal
-
D.
It decreases the voltage
Solution
A series rectifier circuit converts alternating current (AC) to direct current (DC) by allowing current to flow in one direction.
Correct Answer:
B
— It converts AC to DC
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Q. What is the primary characteristic of dynamic RAM (DRAM)?
-
A.
It requires constant refreshing
-
B.
It is faster than SRAM
-
C.
It uses a single transistor per bit
-
D.
It is non-volatile
Solution
Dynamic RAM (DRAM) requires constant refreshing to maintain the stored data, as it uses capacitors that leak charge over time.
Correct Answer:
A
— It requires constant refreshing
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Q. What is the primary characteristic of TTL logic families?
-
A.
High speed and low power consumption
-
B.
Low speed and high power consumption
-
C.
High speed and moderate power consumption
-
D.
Low speed and low power consumption
Solution
TTL (Transistor-Transistor Logic) is known for its high speed and moderate power consumption compared to other logic families.
Correct Answer:
C
— High speed and moderate power consumption
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Q. What is the primary difference between a CPLD and an FPGA?
-
A.
CPLDs are more complex than FPGAs
-
B.
FPGAs have more logic resources than CPLDs
-
C.
CPLDs are slower than FPGAs
-
D.
FPGAs are less flexible than CPLDs
Solution
The primary 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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