What are the header&...

单项选择题What are the header sizes for point-to-point and multi-point GRE（also known asmGRE） with tunnel key？（）

A. 4 bytes for both
B. 4 bytes， and 8 bytes respectively
C. 8 bytes for both
D. 24 bytes for both

您可能感兴趣的试卷

你可能感兴趣的试题

1.单项选择题Which ones are the two type of ciphers？（）

A. Blocking cipher andnon-blocking cipher
B. CBC cipher and EBC cipher
C. Block cipher and Stream cipher
D. Blocker cipher and Streamer cipher
E. 3DES cipher and AES cipher

点击查看答案

2.单项选择题Which SSL protocol takes anapplication message tobe transmitted， fragments the datainto manageable blocks， optionally compresses the data， applies a MAC， encrypts， adds a header， and transmits the resulting unit ina TCPsegment？（）

A. SSL Handshake Protocol
B. SSLAlert Protocol
C. SSL Record Protocol
D. SSL Change CipherSpec Protocol

点击查看答案

3.单项选择题For a router to obtain a certificate from a CA， what is the first stepof the certificate enrollment process？（）

A. the router generates a certificate request and forwards it tothe CA
B. the router generates an RSA key pair
C. the router sends its public key to the CA
D. the CA sends its public key to the router
E. the CA verifies the identity of the router
F. the CA generates a certificate request and forwards it to the router

点击查看答案

4.多项选择题Which two statements are correct about the aaa authentication login default grouptacacs+ localglobal configuration command？（）

A. this login authenticationmethod list is automaticallyapplied to all lines except those that have a named method list explicitly defined
B. If the user fails the TACACS+ authentication then the local database on the router will be used to authenticatethe user
C. if the tacacs+ server fails to respond then the local database on the router will be used to authenticate the user
D. "login" is the name of the method list being configured
E. if the tacacs+ server is unavailable， authentication will succeed automaticallyby default

点击查看答案

5.单项选择题Which Cisco security software product mitigates Day Zero attacks on desktops and servers - stopping known and unknown attacks without requiring reconfigurations or updates on the endpoints？（）

A. Cisco Secure Desktop （CSD）
B. NAC Appliance Agent （NAA）
C. Cisco SecurityAgent （CSA）
D. SSLVPN Client （SVC）
E. Cisco TrustAgent （CTA）

点击查看答案

6.多项选择题TACACS+ authentication uses whichthree packet types？（）

A. ACCESS REQUEST
B. ACCESS ACCEPT
C. CONTINUE
D. CHALLENGE
E. REPLY
F. START

点击查看答案

7.单项选择题Which should be the key driver for a company security policy’s creation， implementation and enforcement？（）

A. the business knowledge of the IT staff
B. the technical knowledge of the IT staff
C. the company’s business objectives
D. the company’s network topology
E. the IT future directions

点击查看答案

8.单项选择题Which IOS QoS mechanism is used strictly to rate limit traffic destinedto the router itself？（）

A. Class-Based Policing
B. Control Plane Policing
C. Dual-Rate Policier
D. Single-Rate Policier
E. Class-BasedTraffic Shaper

点击查看答案

9.单项选择题In an L2TP voluntary tunneling scenario， the VPDN tunnel is terminated between：（）

A. The client and the NAS.
B. The NAS andthe LNS.
C. The NAS and the LAC.
D. The client and the LNS.

点击查看答案

10.单项选择题Which one of the following is NOT a supported IKE attribute？（）

A. PFS group.
B. Encryption algorithm.
C. Hashing Algorithm.
D. Authenticationmethod.
E. Lifetime duration.

点击查看答案