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H3C GB0-391 Exam Syllabus Topics:

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. Which of the following H.225 messages called for the direction of the caller indicates that call processing progress state ?

A) Progress
B) Call-proceeding
C) Alerting
D) Setup

2. The following information about VoIP saying voice transmission error is ______ .

A) need to UDP provides multiplexing mechanism
B) needs to UDP provides a time stamp mechanism
C) need to RTP to provide re-ordering mechanism
D) needed to TCP to provide reliability mechanisms

3. In the H.323 call flow, if two terminals registered to the same gatekeeper adopt the routing call mode, then

A) to the answers are right
B) Messages such as ARQ and ACF are exchanged between the two terminals through the gatekeeper
C) two terminals is controlled by a signaling interaction gatekeeper call
D) H.245 capability negotiation is completed between two terminals through a gatekeeper

4. Among the packets encapsulated by the GRE protocol, the payload protocol is the IPX protocol, and the bearer protocol is the IP protocol.The encapsulation sequence of the packet from the link layer to the payload data is the link layer ____GRE____ payload data.

A) IPX , IPX
B) lP , IPX
C) IPX , IP
D) IP , IP

5. The following means to ensure data integrity are _____ .

A) Non symmetric encryption
B) Number of digital signature
C) for said encrypted
D) Number of word summary

Solutions: