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MATCHING -an IETF standard for secure authentication of requests for resource access


A) AH
B) ESP
C) GRE
D) IKE
E) IPsec
F) ISAKMP
G) Kerberos
H) KDC
I) SSL
J) TGT

K) A) and D)
L) E) and I)

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What is AES and why is AES a better encryption method to use compared to DES?

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AES is stronger than 3DES and works fast...

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Which of the following is true about software VPNs?


A) more cost-effective than hardware VPNs
B) best when all router and firewall hardware is the same
C) usually less flexible than hardware VPNs
D) configuration is easy since there is no OS to rely upon

E) None of the above
F) B) and C)

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How is authentication implemented in a VPN?

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The type of authentication used in a VPN depends on the tunneling protocol.Many networks use IPsec to authenticate users; VPN participants establish an SA and exchange keys to authenticate one another.PPTP,which is used for dial-up access to a remote server,uses MS-CHAP,in which both computers exchange authentication packets.TLS/SSL uses certificate-based authentication.RADIUS is also commonly used for authentication services in VPN architecture. VPNs also use digital certificates to authenticate users and encryption to ensure that communications cannot be read even if they are intercepted in transit.

Network gateways are ____________ of the VPN connection.

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Which of the following is NOT a factor a secure VPN design should address?


A) encryption
B) authentication
C) nonrepudiation
D) performance

E) None of the above
F) A) and C)

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Which IPsec component is software that handles the tasks of encrypting,authenticating, decrypting,and checking packets?


A) ISAKMP
B) IKE
C) IPsec driver
D) Oakley protocol

E) A) and D)
F) A) and B)

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Which of the following is a disadvantage of putting the VPN on a firewall?


A) centralized control of network access security
B) more configuration mistakes
C) VPN and firewall use the same configuration tools
D) Internet and VPN traffic compete for resources

E) B) and D)
F) A) and B)

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Which VPN protocol uses UDP port 1701 and does not provide confidentiality and authentication?


A) IPsec
B) L2TP
C) PPTP
D) SSL

E) A) and B)
F) B) and C)

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B

Which of the following is NOT an essential element of a VPN?


A) VPN server
B) tunnel
C) VPN client
D) authentication server

E) B) and D)
F) B) and C)

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If you use Windows RRAS for your VPN,you will need a third-party RADIUS server if you want to use RADIUS for authentication.

A) True
B) False

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MATCHING -a digital token sent from the Authentication Server to the client


A) AH
B) ESP
C) GRE
D) IKE
E) IPsec
F) ISAKMP
G) Kerberos
H) KDC
I) SSL
J) TGT

K) C) and D)
L) E) and J)

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Which VPN protocol is a poor choice for high-performance networks with many hosts due to vulnerabilities in MS-CHAP?


A) SSL
B) L2TP
C) IPsec
D) PPTP

E) A) and B)
F) A) and D)

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MATCHING -a protocol developed by Netscape Communications Corporation as a way of enabling Web servers and browsers to exchange encrypted information


A) AH
B) ESP
C) GRE
D) IKE
E) IPsec
F) ISAKMP
G) Kerberos
H) KDC
I) SSL
J) TGT

K) E) and G)
L) H) and J)

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Which of the following is true about using VPNs?


A) more expensive than leased lines
B) can use an existing broadband connection
C) usually higher performance than leased lines
D) not dependent on an ISP

E) C) and D)
F) B) and C)

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List two advantages and two disadvantages of VPNs.

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Advantages:
Far less expensive than leas...

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MATCHING -an IPsec protocol that encrypts the header and data components of TCP/IP packets


A) AH
B) ESP
C) GRE
D) IKE
E) IPsec
F) ISAKMP
G) Kerberos
H) KDC
I) SSL
J) TGT

K) A) and B)
L) All of the above

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MATCHING -a nonproprietary tunneling protocol that can encapsulate a variety of Network layer protocols


A) AH
B) ESP
C) GRE
D) IKE
E) IPsec
F) ISAKMP
G) Kerberos
H) KDC
I) SSL
J) TGT

K) C) and E)
L) E) and G)

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What are the two modes in which IPsec can be configured to run?


A) transit and gateway
B) client and server
C) header and payload
D) tunnel and transport

E) None of the above
F) B) and C)

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Hardware VPNs create a gateway-to-gateway VPN.

A) True
B) False

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True

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