Operating Systems Previous Year Questions (page 4)
154 Operating Systems (Computer Science) questions asked in DSSSB TGT / PGT previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
The ______ interpolation method is used in probability theory and statistics, and the Gaussian process is one example.
Alinear
Bpolynomial
Cspline
Dnonlinear
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Correct answer: (D) nonlinear
Explanation
Gaussian process regression (kriging) is a non-linear interpolation method from probability and statistics. It treats the unknown function as a random process and predicts values between data points.
The process of verifying a user's identity is called:
Aintegrity
Bauthentication
Cvalidation
Dconfidentiality
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Correct answer: (B) authentication
Explanation
Authentication is the process of verifying a user's claimed identity, for example with passwords, OTPs or biometrics. Integrity and confidentiality are about protecting the data itself.
Which command is used to remove a directory in Linux?
ARm
BDelete
CErase
DRm, Delete and Erase
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Correct answer: (A) Rm
Explanation
In Linux, directories are removed with rm -r (recursive), or with rmdir for empty ones. 'Delete' and 'Erase' are not Linux commands, so rm is the answer.
What is an endpoint of an inter-process communication?
ATunnel
BPut
CSocket
DPipe
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Correct answer: (C) Socket
Explanation
A socket is one endpoint of a two-way inter-process communication link, identified by an IP address and port number. Two processes communicate through a pair of sockets.
How to use these DSSSB TGT / PGT Computer Science questions
Every question here was asked in a real DSSSB TGT / PGT paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full DSSSB TGT / PGT papers as timed tests to check your speed under exam conditions.