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Question 131

UP police computer operator 2025• Test

In an eLearning platform, a credential stuffing attack occurs when :

  1. AOption (a)

    Phishing emails trick users into downloading malicious software

  2. BOption (b)

    Stolen usernames and passwords are automatically tested on the platform to gain unauthorized access

  3. COption (c)

    A user accidentally shares their password with a classmate

  4. DOption (d)

    The platform's server is flooded with fake course registration requests

View answer & explanation

Correct answer

Answer: (a)A.

Phishing emails trick users into downloading malicious software

Explanation not yet available.

Question 132

UP police computer operator 2025• Test

A MAN is being designed for a smart city project. What is the main advantage of using SDN (Software-Defined Networking) in this scenario ?

  1. AOption (a)

    Eliminates IP addressing

  2. BOption (b)

    Reduces the need for switches

  3. COption (c)

    Increases the number of routers required

  4. DOption (d)

    Provides centralized traffic management

View answer & explanation

Correct answer

Answer: (a)A.

Eliminates IP addressing

Explanation not yet available.

Question 133

UP police computer operator 2025• Test

Which type of I/O communication method requires the processor to check the device status repeatedly?

  1. AOption (a)

    Cache Coherency

  2. BOption (b)

    Polling

  3. COption (c)

    Direct Memory Access

  4. DOption (d)

    Interrupt-driven I/O

View answer & explanation

Correct answer

Answer: (a)A.

Cache Coherency

Explanation not yet available.

Question 134

UP police computer operator 2025• Test

What primary role does the File Control Block (FCB) play in File Management Systems ?

  1. AOption (a)

    Encrypts data files

  2. BOption (b)

    Manages user permissions

  3. COption (c)

    Stores metadata about a file

  4. DOption (d)

    Monitors active database transactions

View answer & explanation

Correct answer

Answer: (a)A.

Encrypts data files

Explanation not yet available.

Question 135

UP police computer operator 2025• Test

What type of security threat occurs when an attacker masquerades as another entity?

  1. AOption (a)

    Packet sniffing

  2. BOption (b)

    Ransomware

  3. COption (c)

    Spoofing

  4. DOption (d)

    Virus attack

View answer & explanation

Correct answer

Answer: (a)A.

Packet sniffing

Explanation not yet available.

Question 136

UP police computer operator 2025• Test

What is the primary purpose of SQL in a database? 

  1. AOption (a)

    Defragmenting the hard disk

  2. BOption (b)

    Managing and querying databases

  3. COption (c)

    Creating computer graphics

  4. DOption (d)

    Designing the user interface

View answer & explanation

Correct answer

Answer: (a)A.

Defragmenting the hard disk

Explanation not yet available.

Question 137

UP police computer operator 2025• Test

What will be the output of the following query if the table dept has duplicate department names?

SELECT DISTINCT_dept name

FROM dept

ORDER BY dept name DESC NULLS FIRST;

  1. AOption (a)

    All department names with duplicates removed, but order is random 

  2. BOption (b)

    All unique department names sorted descending, NULLS first

  3. COption (c)

    Same as GROUP BY dept name

  4. DOption (d)

    All department names sorted ascending, NULLS at bottom

View answer & explanation

Correct answer

Answer: (a)A.

All department names with duplicates removed, but order is random 

Explanation not yet available.

Question 138

UP police computer operator 2025• Test

In Windows, what is the purpose of the "Safe Mode" boot option ?

  1. AOption (a)

    To switch between user accounts

  2. BOption (b)

    To enhance graphics performance

  3. COption (c)

    To reset the operating system

  4. DOption (d)

    To start Windows with minimal drivers and services for troubleshooting

View answer & explanation

Correct answer

Answer: (a)A.

To switch between user accounts

Explanation not yet available.

Question 139

UP police computer operator 2025• Test

What is the time complexity of finding the sum of all elements in an N x M two-dimensional array

  1. AOption (a)

    O(N+M)

  2. BOption (b)

    O(N × M)

  3. COption (c)

    O(log(N x M))

  4. DOption (d)

    O(1)

View answer & explanation

Correct answer

Answer: (a)A.

O(N+M)

Explanation not yet available.

Question 140

UP police computer operator 2025• Test

Which function would you use to count only numeric entries in a selected range?

  1. AOption (a)

    COUNTA

  2. BOption (b)

    COUNTIF

  3. COption (c)

    COUNTBLANK

  4. DOption (d)

    COUNT

View answer & explanation

Correct answer

Answer: (a)A.

COUNTA

Explanation not yet available.
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