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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. Which of the following descriptions about the structure of SIP messages are correct ?

A) There are some special SIP response messages without a start line
B) Since the start line, the message header, the message body is a SIP basic components message lacks any part of the SIP message is illegal message
C) The some SIP message contains one or more message header, used to identify the type of message
D) elimination main message body content of the message is a description of the session to be set up, some special SIP message without the message body

2. The following information about the AH ( the Authentication Header , Authentication Header ) and the ESP ( Encapsulating Securlt Paload , the Encapsulating Security Payload ) described right there ______ .( Choose one or more )

A) two who can provide data integrity protection
B) two who can provide confidentiality protection
C) two who can be used at the same time
D) two who can provide data origin authentication and optional anti-replay service

3. In the H.323 protocol, which of the following protocols is used to negotiate the capabilities of the two parties ?

A) H.263
B) H.245
C) H.225.0
D) H.261

4. In the SIP network, which of the following devices belong to UA?

A) language voice gateway
B) SIP server
C) lP phone
D) connected to a common voice on the gateway PSTN phone

5. A secure network must meet - conditions

A) access into the Inte RN E t has adequate security system when
B) entire network has a sound management system
C) determined users within the network access security and legal security
D) Have sufficient encryption and anti-counterfeiting means when transmitting data on the Internet

Solutions: