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Perguntas do quiz (25)
1In terms of network security what does Confidentiality mean?
- Aonly sender, intended receiver should “understand” message contents
- Bsender, receiver want to confirm identity of each other
- Csender, receiver want to ensure message not altered (in transit, or afterwards) without detection
- Dservices must be accessible and available to users
- Aonly sender, intended receiver should “understand” message contents
2In terms of network security what does authentication mean?
- Aonly sender, intended receiver should “understand” message contents
- Bservices must be accessible and available to users
- Csender, receiver want to ensure message not altered (in transit, or afterwards) without detection
- Dsender, receiver want to confirm identity of each other
- Aonly sender, intended receiver should “understand” message contents
3In terms of network security what does Message integrity mean?
- Aonly sender, intended receiver should “understand” message contents
- Bsender, receiver want to ensure message not altered (in transit, or afterwards) without detection
- Cservices must be accessible and available to users
- Donly sender, intended receiver should “understand” message contents
- Aonly sender, intended receiver should “understand” message contents
4How many keys are involved in Symmetric key cryptography?
- A0
- B1
- C2
- D3
5How many keys are involved in Public key cryptography?
- A1
- B2
- C3
- D4
6How many keys are used in Hash functions?
- A0
- B1
- C2
- D3
7In relation to cryptography RC4 is a popular type of what?
- AHashing function
- BBlock cypher
- CStream cypher
- DNone of the above
8In block cyphering, if the message to be encrypted is processed in 8-bit blocks, how many entries are in the table for the mapping?
- A8
- B16
- C256
- D512
9In network security, what does DES stand for?
- ADigital Encryption Security
- BDigital Encryption Standard
- CData Encryption Standard
- DData Enigma Security
10DES is an example of which type of cryptography?
- ASymmetric Key cryptography
- BPublic key cryptography
- CHashing
- DOther
11The 56-bit key DES can be decrypted by brute force in how long?
- A<10 seconds
- Bless than a day
- C158 years
- D149 trillion years
12How long does Advanced Encryption Standard take to crack by brute force?
- A<10 seconds
- Bless than a day
- C158 years
- D149 trillion years
13In public key cryptography who knows the private decryption key?
- Aonly the sender
- Bonly the receiver
- Cthe sender and receiver
- Dyer da
14In Public key encryption who knows the public key
- Aonly the sender
- Bonly the receiver
- Ceveryone
- Dyer da
15RSA 1) is an encryption algorithm for which type of cryptography?
2) is an abbreviation of what?- A1) Symmetric Key
2) Rivest, Shamir, Adelson - B1) Public Key
2) Rivest, Shamir, Adelson - C1) Symmetric Key
2) Ribero, Sander, Andersen - D1) Public Key
2) Ribero, Sander, Andersen
- A1) Symmetric Key
16MD5 and SHA-1 are examples of which type of cryptography?
- APublic key cryptography
- BSymmetric key cryptography
- CHash functions
- DOther
17Which of the following statements about Hashing functions is NOT true
- AThey are irreversible - can't determine message m from H(m)
- BThey can be described as many-to-one functions
- CThey take a fixed length message and produce a variable length string
- DThey take a variable length message and produce a fixed length string
18MAC stands for?
- AModular Authentication Code
- BMessage Authorisation Cryptography
- CMessage Authorisation Code
- DOther
19How do you defend against Playback attacks?
- AUsing a Nonce
- BUsing a Digital Signature
- CUsing a Certification Authority
- DOther
20Secure Socket Layer provides:
- AConfidentiality
- BIntegrity
Authentication - CConfidentiality
Integrity - DConfidentiality
Integrity
Authentication
21Which of the following is not a symmetric cypher?
- ADES
- B3DES
- CRSA
- DRC2
22Which of the following is NOT contained in the SSL record header?
- AMAC key
- BContent Type
- CVersion
- DLength
23Two protocols used for Internet Protocol Security IPsec are AH and ESP. Two transport modes in IPsec are 'tunnelling' and 'host'.
What is the most common combination of these?- AHost mode with AH
- BHost mode with ESP
- CTunnelling mode with AH
- DTunnelling mode with ESP
24Suppose 4 people want to communicate with each of the other people using SK encryption. All communication between any two people, i and j, is visible to everyone else, and no other person should be able to decode their communication. How many keys are required in the system as a whole?
- A4
- B6
- C8
- D16
25Suppose 4 people want to communicate with each of the other people using Public Key encryption. All communication between any two people, i and j, is visible to everyone else, and no other person should be able to decode their communication. How many keys are required in the system as a whole?
- A4
- B8
- C16
- D32
Informações
- Descrição
- Quiz sobre Sem título, criado por Liam Diamond em 21-04-2015.
- Autor
- Liam Diamond
- Idioma
- English
- Visualizações
- 5
- Avaliação
- 5,0 de 5 · 1 avaliação Avalie este quiz