Jkp Constable Telecommunication Telecommunication Mcqs Jkp Constable (1089 MCQs) | JKSSB & SSC Quiz

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Practice Questions

1089 Total
Question 41 Discuss
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Which of the following ACID properties ensures that a database transaction is completed entirely or not at all?

A
Atomicity
B
Consistency
C
Isolation
D
Durability

Answer & Explanation

Correct Option: A

Atomicity treats a transaction as a single, indivisible unit, guaranteeing an all-or-nothing execution.
Question 42 Discuss
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Modern anti-virus software uses heuristic analysis primarily to:

A
Scan files faster using signatures
B
Detect unknown or zero-day viruses
C
Encrypt user data
D
Repair hardware damage

Answer & Explanation

Correct Option: B

Heuristic analysis examines code for suspicious properties, allowing detection of new malware before a specific signature is created.
Question 43 Discuss
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Under India's e-Governance initiatives, SWAN stands for:

A
State Wide Area Network
B
Secure Wireless Area Network
C
System Wide Access Node
D
State Web Access Network

Answer & Explanation

Correct Option: A

SWAN (State Wide Area Network) is a core infrastructure component under the National e-Governance Plan connecting state headquarters down to block levels.
Question 44 Discuss
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Find the resonant frequency of an ideal LC circuit with L = 0.1 H and C = 10 microfarads.

A
50.3 Hz
B
100.5 Hz
C
159.1 Hz
D
318.3 Hz

Answer & Explanation

Correct Option: C

f = 1 / (2 * pi * sqrt(LC)) = 1 / (2 * 3.1416 * sqrt(10^-6)) = 1 / (6.28 * 0.001) = 1000 / 6.28 = 159.1 Hz.
Question 45 Discuss
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The tendency of alternating current to flow near the surface of a conductor rather than its core is known as:

A
Proximity effect
B
Ferranti effect
C
Skin effect
D
Corona effect

Answer & Explanation

Correct Option: C

Skin effect increases the effective resistance of the conductor at higher frequencies because current crowds to the surface.
Question 46 Discuss
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A load draws 100 kW of real power and 75 kVAR of reactive power. What is its apparent power?

A
25 kVA
B
125 kVA
C
150 kVA
D
175 kVA

Answer & Explanation

Correct Option: B

Apparent Power S = sqrt(P^2 + Q^2) = sqrt(100^2 + 75^2) = sqrt(10000 + 5625) = sqrt(15625) = 125 kVA.
Question 47 Discuss
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In an AC circuit, the power factor is defined as the ratio of:

A
Apparent power to active power
B
Active power to apparent power
C
Reactive power to active power
D
Reactive power to apparent power

Answer & Explanation

Correct Option: B

Power factor (cos phi) indicates efficiency and is strictly the ratio of True/Active Power (kW) to Apparent Power (kVA).
Question 48 Discuss
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In a relational database, what is the process of organizing data to reduce redundancy and improve data integrity?

A
Indexing
B
Hashing
C
Normalization
D
Encapsulation

Answer & Explanation

Correct Option: C

Normalization breaks down large tables into smaller, related tables to eliminate duplicate data and prevent update anomalies.
Question 49 Discuss
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The 'e-Pramaan' project in India's e-Governance initiative is associated with:

A
Online payment gateway
B
National authentication framework
C
Digitization of land records
D
Electronic procurement

Answer & Explanation

Correct Option: B

e-Pramaan is an authentication framework offering multi-factor authentication for citizens accessing government services.
Question 50 Discuss
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A series RLC circuit has R = 10 ohms, L = 0.5 H, and C = 20 microfarads. What is the bandwidth of this circuit?

A
3.18 Hz
B
6.36 Hz
C
15.9 Hz
D
20.0 Hz

Answer & Explanation

Correct Option: A

Bandwidth (in Hz) = R / (2 * pi * L) = 10 / (2 * 3.1416 * 0.5) = 10 / 3.1416 = 3.18 Hz.
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