ISRO PRL Technical Assistant CS/IT 2025

Detailed Explanation:

An operating system manages computer hardware resources and provides common services for application programs.

Its responsibilities include process scheduling, memory management, file systems, device management, and security controls.

Therefore, the correct answer is Manage computer hardware and software resources.

Detailed Explanation:

A stack follows the Last In, First Out (LIFO) principle.

The most recently inserted element is the first one removed.

The primary operations are push (insert) and pop (remove).

Therefore, the correct answer is Stack.

Detailed Explanation:

Hexadecimal digits range from 0 to 15.

The digit A represents decimal 10.

Decimal 10 in four-bit binary is 1010.

Therefore, the correct answer is 1010.

Detailed Explanation:

TRUNCATE TABLE removes all rows from a table while retaining the table definition.

In many database systems it is implemented with less logging than deleting rows individually, but logging, rollback, identity-reset behaviour, and restrictions vary by DBMS.

DELETE removes selected or all rows and can use a WHERE clause; DROP removes the table object itself.

Therefore, the expected answer is TRUNCATE.

Detailed Explanation:

SSH (Secure Shell) provides an encrypted channel for remote login and command execution.

It protects authentication data and session traffic against eavesdropping and tampering when correctly configured.

Telnet does not encrypt its session by default; FTP is for file transfer.

Therefore, the correct answer is SSH.