Q. Which of the following is a characteristic of a transaction in a database?
A.
Atomicity
B.
Redundancy
C.
Isolation
D.
Both Atomicity and Isolation
Show solution
Solution
Transactions in a database are characterized by properties known as ACID: Atomicity, Consistency, Isolation, and Durability.
Correct Answer:
D
— Both Atomicity and Isolation
Learn More →
Q. Which of the following is a characteristic of a transaction in a DBMS?
A.
Atomicity
B.
Redundancy
C.
Isolation
D.
Both Atomicity and Isolation
Show solution
Solution
A transaction in a DBMS is characterized by Atomicity and Isolation, ensuring that transactions are completed fully or not at all.
Correct Answer:
D
— Both Atomicity and Isolation
Learn More →
Q. Which of the following is a characteristic of a transducer?
A.
It can only convert electrical energy to mechanical energy
B.
It can convert one form of energy to another
C.
It is always a passive device
D.
It cannot be used in feedback systems
Show solution
Solution
Transducers convert one form of energy to another, such as mechanical to electrical.
Correct Answer:
B
— It can convert one form of energy to another
Learn More →
Q. Which of the following is a characteristic of a trunk port?
A.
Carries traffic for a single VLAN
B.
Is used to connect end devices
C.
Carries traffic for multiple VLANs
D.
Is always configured as access mode
Show solution
Solution
A trunk port carries traffic for multiple VLANs, allowing switches to communicate VLAN information across the network.
Correct Answer:
C
— Carries traffic for multiple VLANs
Learn More →
Q. Which of the following is a characteristic of a weak entity?
A.
It can exist independently of other entities
B.
It has a primary key of its own
C.
It relies on a strong entity for its identification
D.
It cannot have attributes
Show solution
Solution
A weak entity relies on a strong entity for its identification and does not have a primary key of its own.
Correct Answer:
C
— It relies on a strong entity for its identification
Learn More →
Q. Which of the following is a characteristic of a well-designed database?
A.
High data redundancy
B.
Low data integrity
C.
Minimal data anomalies
D.
Complex relationships
Show solution
Solution
A well-designed database should have minimal data anomalies, ensuring data integrity and consistency.
Correct Answer:
C
— Minimal data anomalies
Learn More →
Q. Which of the following is a characteristic of an ideal op-amp?
A.
Infinite bandwidth
B.
Finite input impedance
C.
Non-infinite gain
D.
Limited output voltage swing
Show solution
Solution
An ideal operational amplifier is characterized by infinite bandwidth, infinite input impedance, and infinite gain, allowing for perfect signal amplification.
Correct Answer:
A
— Infinite bandwidth
Learn More →
Q. Which of the following is a characteristic of an N-channel MOSFET?
A.
It conducts when a positive voltage is applied to the gate
B.
It conducts when a negative voltage is applied to the gate
C.
It has a higher on-resistance than P-channel MOSFETs
D.
It is always off regardless of gate voltage
Show solution
Solution
An N-channel MOSFET conducts when a positive voltage is applied to the gate relative to the source.
Correct Answer:
A
— It conducts when a positive voltage is applied to the gate
Learn More →
Q. Which of the following is a characteristic of CMOS technology?
A.
It is faster than TTL
B.
It can operate at lower voltages
C.
It consumes more power than TTL
D.
It is less noise tolerant than TTL
Show solution
Solution
CMOS technology can operate at lower voltages, making it suitable for battery-powered devices.
Correct Answer:
B
— It can operate at lower voltages
Learn More →
Q. Which of the following is a characteristic of depletion-mode FETs?
A.
They are normally off
B.
They are normally on
C.
They require a positive gate voltage to turn off
D.
They have a negative temperature coefficient
Show solution
Solution
Depletion-mode FETs are normally off and require a negative gate voltage to turn on.
Correct Answer:
A
— They are normally off
Learn More →
Q. Which of the following is a characteristic of Direct Current (DC)?
A.
Voltage can vary over time
B.
Current can reverse direction
C.
Current flows in one direction
D.
Frequency is always constant
Show solution
Solution
A characteristic of Direct Current (DC) is that current flows in one direction.
Correct Answer:
C
— Current flows in one direction
Learn More →
Q. Which of the following is a characteristic of Direct Current?
A.
It can be easily transformed
B.
It flows in both directions
C.
It has a constant polarity
D.
It is used in power generation
Show solution
Solution
Direct Current (DC) has a constant polarity, flowing in one direction only.
Correct Answer:
C
— It has a constant polarity
Learn More →
Q. Which of the following is a characteristic of enhancement-mode MOSFETs?
A.
Conducts with zero gate voltage
B.
Requires a positive gate voltage to conduct
C.
Always conducts regardless of gate voltage
D.
Has a negative threshold voltage
Show solution
Solution
Enhancement-mode MOSFETs require a positive gate voltage to create a conductive channel.
Correct Answer:
B
— Requires a positive gate voltage to conduct
Learn More →
Q. Which of the following is a characteristic of HDDs compared to SSDs?
A.
Faster read/write speeds
B.
More durable
C.
Higher capacity for lower cost
D.
No moving parts
Show solution
Solution
HDDs (Hard Disk Drives) typically offer higher storage capacity for a lower cost compared to SSDs.
Correct Answer:
C
— Higher capacity for lower cost
Learn More →
Q. Which of the following is a characteristic of open-source software?
A.
It is always free
B.
Its source code is available for modification
C.
It is only available online
D.
It requires a subscription
Show solution
Solution
Open-source software is characterized by the availability of its source code, allowing users to modify and distribute it freely.
Correct Answer:
B
— Its source code is available for modification
Learn More →
Q. Which of the following is a characteristic of OSPF?
A.
Uses hop count as a metric
B.
Supports VLSM and CIDR
C.
Is a distance vector protocol
D.
Sends updates every 30 seconds
Show solution
Solution
OSPF (Open Shortest Path First) supports Variable Length Subnet Masking (VLSM) and Classless Inter-Domain Routing (CIDR), allowing for more efficient IP address usage.
Correct Answer:
B
— Supports VLSM and CIDR
Learn More →
Q. Which of the following is a characteristic of RISC architecture?
A.
Large number of instructions
B.
Complex instruction formats
C.
Load/store architecture
D.
High power consumption
Show solution
Solution
RISC architecture is characterized by a load/store architecture, where operations are performed on data in registers rather than directly in memory.
Correct Answer:
C
— Load/store architecture
Learn More →
Q. Which of the following is a characteristic of SSDs compared to HDDs?
A.
Slower data access
B.
More durable
C.
Higher power consumption
D.
Louder operation
Show solution
Solution
SSDs (Solid State Drives) are generally more durable than HDDs (Hard Disk Drives) because they have no moving parts.
Correct Answer:
B
— More durable
Learn More →
Q. Which of the following is a characteristic of static routing?
A.
Automatically adjusts to network changes
B.
Requires manual configuration
C.
Uses routing protocols to find paths
D.
Is less secure than dynamic routing
Show solution
Solution
Static routing requires manual configuration and does not automatically adjust to network changes.
Correct Answer:
B
— Requires manual configuration
Learn More →
Q. Which of the following is a characteristic of the Internet Protocol (IP)?
A.
It provides error recovery
B.
It is connection-oriented
C.
It routes packets across networks
D.
It encrypts data
Show solution
Solution
The Internet Protocol (IP) is responsible for routing packets across networks, but it does not provide error recovery or encryption.
Correct Answer:
C
— It routes packets across networks
Learn More →
Q. Which of the following is a characteristic of TTL logic families?
A.
High input impedance
B.
Low power consumption
C.
Faster switching speeds
D.
Higher power consumption
Show solution
Solution
TTL logic families typically have higher power consumption compared to CMOS due to their design.
Correct Answer:
D
— Higher power consumption
Learn More →
Q. Which of the following is a characteristic of UDP?
A.
Connection-oriented
B.
Reliable delivery
C.
Low latency
D.
Error correction
Show solution
Solution
UDP (User Datagram Protocol) is connectionless and offers low latency, making it suitable for applications like streaming.
Correct Answer:
C
— Low latency
Learn More →
Q. Which of the following is a characteristic of VLANs?
A.
They require a dedicated physical switch
B.
They can span multiple switches
C.
They operate only at Layer 1 of the OSI model
D.
They are limited to 10 devices
Show solution
Solution
VLANs can span multiple switches, allowing devices on different physical switches to communicate as if they are on the same local network.
Correct Answer:
B
— They can span multiple switches
Learn More →
Q. Which of the following is a characteristic of WAN transmission media?
A.
High bandwidth and low latency
B.
Limited distance and high cost
C.
Long distance and variable bandwidth
D.
Only wired connections
Show solution
Solution
WAN transmission media are characterized by long distances and variable bandwidth, accommodating large geographical areas.
Correct Answer:
C
— Long distance and variable bandwidth
Learn More →
Q. Which of the following is a classful IP address?
A.
192.168.1.1
B.
10.0.0.1
C.
172.16.0.1
D.
All of the above
Show solution
Solution
All of the provided IP addresses are classful addresses, belonging to different classes (A, B, C).
Correct Answer:
D
— All of the above
Learn More →
Q. Which of the following is a common application of a digital-to-analog converter (DAC)?
A.
Reading temperature sensors
B.
Generating audio signals
C.
Measuring voltage levels
D.
Filtering noise
Show solution
Solution
DACs are commonly used to generate audio signals by converting digital audio data into analog signals.
Correct Answer:
B
— Generating audio signals
Learn More →
Q. Which of the following is a common application of a multiplexer?
A.
Data routing
B.
Data storage
C.
Data encryption
D.
Data compression
Show solution
Solution
Multiplexers are commonly used for data routing, allowing multiple signals to share a single communication line.
Correct Answer:
A
— Data routing
Learn More →
Q. Which of the following is a common application of a relay?
A.
To amplify signals
B.
To switch high voltage circuits with low voltage control
C.
To measure current
D.
To store energy
Show solution
Solution
Relays are used to switch high voltage circuits using a low voltage control signal.
Correct Answer:
B
— To switch high voltage circuits with low voltage control
Learn More →
Q. Which of the following is a common application of capacitors in AC circuits?
A.
Filtering
B.
Amplification
C.
Rectification
D.
Switching
Show solution
Solution
Capacitors are commonly used for filtering in AC circuits to smooth out voltage fluctuations.
Correct Answer:
A
— Filtering
Learn More →
Q. Which of the following is a common application of capacitors in circuits?
A.
Signal filtering
B.
Current amplification
C.
Voltage regulation
D.
Power generation
Show solution
Solution
Capacitors are commonly used for signal filtering to remove unwanted frequencies.
Correct Answer:
A
— Signal filtering
Learn More →
Showing 1231 to 1260 of 1509 (51 Pages)