a trojan
a computer worm
a spyware
a computer virus
Correct answer is B
A computer worm is a computer code that spreads without user interaction, they are not always destructive but can cause network performance and stability problems
The logic gate in the figure above is
XNOR gate
NOT gate
XOR gate
OR gate
Correct answer is C
It's an XOR gate
denoted by Z = A ⊕ B.
A set of moral principles that regulate the use of computers is called
cyber security guidelines
computer ethics
computer safety laws
computer rules
Correct answer is B
Computer ethics is the term used to describe a set of moral principles that regulate the use of computers. It involves questions related to privacy, accuracy, property, and access
When records are given a new value, it is called
updation
insertion
deletion
retrieval
Correct answer is A
When records are given a new value, it is called 'updation'. This is a process in database management where an existing record is modified with new data. 'Insertion' is adding a new record, 'deletion' is removing a record, and 'retrieval' is fetching data from the database
Which of the following is used for modulation and demodulation ?
Gateway
Protocol
Modem
Multiplex
Correct answer is C
A modem(modulator-demodulator) is a hardware device that connects a computer or router to a broadband network
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