Doppler affect can be used to calculate the speeds of
Distant stars
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Planets
Galaxies
All Options are Correct
If the stars are moving towards the earth show a
If the stars are moving towards the earth show a
Blue shift
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Red shift
Yellow shift
None of the Option is Correct
If the stars are moving away from the Earth show a
If the stars are moving away from the Earth show a
Red shift
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Blue shift
Green shift
None of the Option is Correct
When the source is moving towards the observer at rest the apparent frequency will
When the source is moving towards the observer at rest the apparent frequency will
Increased
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Decreased
Both
None of the Option is Correct
Bats navigate and find food by
Bats navigate and find food by
Eco-location
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Eco-sounding
Acoustical echo
None of the Option is Correct
Heart of Data Encryption Standard (DES), is the
Heart of Data Encryption Standard (DES), is the
DES function
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Encryption
Rounds
Cipher
Substitutional cipers are
Substitutional cipers are
Monoalphabatic and polyalphabetic
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Sami alphabetic
Both
None of the Option is Correct
Shift cipher is sometimes referred to as the
Shift cipher is sometimes referred to as the
Caesar cipher
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Shift cipher
cipher
cipher text
We use Cryptography term to transforming messages to make them secure and immune to
We use Cryptography term to transforming messages to make them secure and immune to
Attacks
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Idle
Change
Defend
Man-in-the-middle attack can endanger security of Diffie-Hellman method if two parties are not
Man-in-the-middle attack can endanger security of Diffie-Hellman method if two parties are not
Authenticated
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Joined
Submit
Separate