Test
CH 7 & 8 HW and Exam Review
Preguntas del test (13)
1What are two symmetric encryption algorithms? (Choose two.)
- A3DES
- BMD5
- CAES
- DHMAC
- ESHA
2What is the reason for HMAC to use an additional secret key as input to the hash function?
- Ato provide encryption
- Bto provide authentication
- Cto provide integrity verification
- Dto prevent DoS attacks
3If an asymmetric algorithm uses a public key to encrypt data, what is used to decrypt it?
- ADH
- Ba private key
- Cthe same public key
- Da different public key
4What is a difference between symmetric and asymmetric encryption algorithms?
- ASymmetric algorithms are typically hundreds to thousands of times slower than asymmetric algorithms.
- BSymmetric encryption algorithms are used to authenticate secure communications. Asymmetric encryption algorithms are used to repudiate messages.
- CSymmetric encryption algorithms are used to encrypt data. Asymmetric encryption algorithms are used to decrypt data.
- DSymmetric encryption algorithms use pre-shared keys. Asymmetric encryption algorithms use different keys to encrypt and decrypt data.
5What is the purpose of the DH algorithm?
- Ato provide nonrepudiation support
- Bto support email data confidentiality
- Cto encrypt data traffic after a VPN is established
- Dto generate a shared key over an unsecured channel before data communications
6Which requirement of secure communications is ensured by the implementation of MD5 or SHA hash algorithm?
- Aconfidentiality
- Bauthentication
- Cintegrity
- Dnonrepudiation
7What is missing in the AH VPN?
- Aconfidentiality
- Bintegrity
- Cauthentication
- Dsecure key exchange
- EDH
8Which IPsec security function provides assurance that the data received via a VPN has not been modified in transit?
- Aconfidentiality
- Bintegrity
- Cauthentication
- Dsecure key exchange
9Which IPsec framework protocol provides data integrity and data authentication, but does not provide data confidentiality?
- AAH
- BIP protocol 50
- CESP
- DDH
10The use of 3DES within the IPsec framework is an example of which of the five IPsec building blocks?
- Aauthentication
- Bconfidentiality
- CDiffie-Hellman
- Dintegrity
- Enonrepudiation
11Refer to exhibit above. The site-to-site VPN is configured correctly between R1 and R3 for the communications from PC-A to PC-C. When PC-A sends out traffic to PC-C, what item in the following will be sent in plain text? (Choose the most likely one.)
- AThe PC-A’s IP address
- BThe PC-C’s IP address
- CThe data inside the IP packet
- DThe R1’s s0/0/1’s IP address
12Which statement describes the effect of key length in deterring an attacker from hacking through an encryption key?
- AThe length of a key will not vary between encryption algorithms.
- BThe length of a key does not affect the degree of security.
- CThe shorter the key, the harder it is to break.
- DThe longer the key, the more key possibilities exist.
13Which statement describes a VPN?
- AVPNs use dedicated physical connections to transfer data between remote users.
- BVPNs use logical connections to create public networks through the Internet.
- CVPNs use open source virtualization software to create the tunnel through the Internet.
- DVPNs use virtual connections to create a private network through a public network.
Información
- Descripción
- CCNA SECURITY CH 7 & 8 HW and Exam Review
- Autor
- Anthony Schulmeister
- Idioma
- English
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- 866
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