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Recent questions tagged network-security

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ISRO 2024
CAPTCHA is used to provide protection fromZero day attackBuffer OverflowAutomated scripted attackMan in the middle attack
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DRDO CSE 2022 Paper 2 | Question: 21
You work for a company $X$ in Bangalore. Due to floods, you have been allowed to work from home. You have your code in the server in the company and you have to access it...
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DRDO CSE 2022 Paper 2 | Question: 23 (a)
Fill in the table below to create firewall rules that perform the actions described below on a local network with address $1.2.3.0$ (subnet $255.255.255.0).$ Assume that ...
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UPSC Assistant Director (Systems) Exam
If a password hacker devised a system trying a password entry system by a program which ran once a second. How much time it would take to crack a password consisting of 4...
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Consider a Diffie-Hellman scheme with a common prime q=11 and a primitive root a=2. a. If user A as public key YA=9 what is as private key XA? b. If user B has public key YB= 3 what is the shared secret key K?
Consider a Diffie-Hellman scheme with a common prime q=11 and a primitive root a=2. If user A as public key YA=9 what is as private key XA? If user B has public key YB= 3...
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Is Ipv6 & network security is in gate 2023?
Is Ipv6 & network security is in gate 2023?
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NIELIT STA 2021
The DoS attack, in which the attacker establishes a large number of half-open or fully open TCP connections at the target host is: Vulnerability attackBandwidth flooding...
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UGC NET CSE | October 2020 | Part 2 | Question: 32
Using ‘RSA’ public key cryptosystem, if $p=3$, $q=11$ and $d=7$, find the value of $e$ and encrypt the number $’19’$$20, 19$$33,11$$3, 28$$77, 28$
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UGC NET CSE | October 2020 | Part 2 | Question: 54
Which among the following statement(s) is(are) true?A hash function takes a message of arbitrary length and generates a fixed length codeA hash function takes a message o...
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UGC NET CSE | October 2020 | Part 2 | Question: 60
Firewall is a device that filters access to the protected network from the outside network. Firewalls can filter the packets on the basis ofSource IP addressDestination I...
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UGC NET CSE | October 2020 | Part 2 | Question: 89
Given below are two statements:Statement $I$: In Ceasar Cipher each letter of Plain text is replaced by another letter for encryptionStatement $II$: Diffie-Hellman algori...
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NIELIT 2016 MAR Scientist C - Section C: 38
How many bits are required to encode all twenty six letters, ten symbols, and ten numerals?$5$$6$$7$$46$
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NIELIT 2017 DEC Scientific Assistant A - Section B: 14
$PGP$ encrypts data by using a block cipher called :international data encryption algorithmprivate data encryption algorithminternet data encryption algorithmnone of the ...
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NIELIT 2017 DEC Scientific Assistant A - Section B: 49
Why is one - time password safe ?It is easy to generateIt cannot b sharedIt is different for every accessIt can be easily decrypted
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UGC NET CSE | June 2019 | Part 2 | Question: 89
The ability to inject packets into the Internet with a false source address is known asMan-in-the-middle attackIP phishingIP sniffingIP spoofing
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UGC NET CSE | June 2019 | Part 2 | Question: 90
The RSA encryption algorithm also works in reverse, that is, you can encrypt a message with the private key and decrypt it using the public key. This property is used ini...
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Andrew S. Tanenbaum Edition 5th Exercise 8 Question 22 (Page No. 873)
A math class has 25 students. Assuming that all of the students were born in the firsthalf of the year—between January 1st and June 30th— what is the probability that...
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Andrew S. Tanenbaum Edition 5th Exercise 8 Question 33 (Page No. 874)
33. Two users can establish a shared secret key using the Diffie-Hellman algorithm, evenif they have never met, share no secrets, and have no certificates(a) Explain how ...
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Andrew S. Tanenbaum Edition 5th Exercise 8 Question 32 (Page No. 874)
The Diffie-Hellman key exchange is being used to establish a secret key betweenAlice and Bob. Alice sends Bob (227, 5, 82). Bob responds with (125). Alice’ssecret numbe...
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Andrew S. Tanenbaum Edition 5th Exercise 8 Question 25 (Page No. 873)
Alice wants to communicate with Bob, using public-key cryptography. She establishesa connection to someone she hopes is Bob. She asks him for his public key andhe sends i...
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Andrew S. Tanenbaum Edition 5th Exercise 8 Question 18 (Page No. 873)
Alice and Bob use RSA public key encryption in order to communicate between them.Trudy finds out that Alice and Bob shared one of the primes used to determine thenumber n...
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Andrew S. Tanenbaum Edition 5th Exercise 8 Question 17 (Page No. 873)
Using the RSA public key cryptosystem, with a = 1, b = 2 . . . y = 25, z = 26.(a) If p = 5 and q = 13, list five legal values for d.(b) If p = 5, q = 31, and d = 37, find...
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DIGITAL CERTIFICATE ( Self Doubts)
I’m not able to distinguish the difference between digital certificate and digital signature… Correct me if there is flaw in my understanding : A Digital Certificate ...
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GATE CSE 2019 | Question: 54
In an RSA cryptosystem, the value of the public modulus parameter $n$ is $3007$. If it is also known as that $\phi(n)=2880$ where $\phi()$ denotes Euler’s Totient Funct...
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Ace Test Series: Computer Networks - IP Inverse
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UGC NET CSE | December 2018 | Part 2 | Question: 66
Which of the following statement/s is/are true?Firewalls can screen traffic going into or out of an organization.Virtual private networks can stimulate an old leased netw...
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UGC NET CSE | December 2018 | Part 2 | Question: 90
Suppose that everyone in a group of $N$ people wants to communicate secretly with $(N-1)$ other people using symmetric key cryptographic system. The communication between...
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