Free Access H3C.GB0-391.v2022-05-05.q128 Practice Test (Page 12)

Question 51

IPSec security policies which include several ____ .( Choose one or more )

A.Hand worker configuration parameters of security policy

B.Lee with IKE negotiation parameters of the security policy

C.Lee with GRE auto-negotiation mode

D.Lee with L2TP auto-negotiation mode

Question 52

Which of the following codes has the lowest bandwidth requirement?

A.G.711

B.G.723

C.G.729

D.G.726

Question 53

Which of the following statements about IKE is correct is ____ .( Choose one or more )

A.The first phase of IKE exchange mode has main mode and quick mode

B.IKE uses an asymmetric key algorithm when exchanging keys

C.The exchange of keys in both IKE modes requires authentication

D.IKE SA is generated when the second phase of IKE is completed

Question 54

Compared with ordinary data flow, voice flow is more sensitive to delay and jitter.The field that can be used to mark voice traffic in a data packet for priority processing by network equipment is ____

A.IP Precedence

B.802.1p

C.DSCP

D.number of source data streams / object IP address, port number, protocol type pentad

Question 55

In the VoIP network, the bandwidth saved by VAD technology has nothing to do with which of the following solid elements

A.selected by signaling type

B.mesh network extent owned room

C.said language and characteristics of the speaker

D.selected encoding type used

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