H3C GB0-391 : Constructing Secure optimized WANs v2.0

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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. During the SIP UA calling the called party through the redirect server,

A) Lord called UA All messages are forwarded by redirecting server
B) In addition to the external location request message, the calling UA other messages do not need to be forwarded by the redirection server
C) After resetting the server to help obtain the location of the called UA , the calling UA directly initiates a call to the called UA
D) to the not right

2. A PBX of a company in Beijing was originally connected to the operator's telephone network through an analog line, using a total of 18 analog lines.In order to reduce maintenance complexity, it is the most economical choice to apply for a digital line from the operator .

A) ATM
B) T1
C) E1
D) E&M

3. In a typical PPPoE network, both PPPoE Server and PPPoE Client are MSR routers.If you want PPPoE to work in permanent online mode, which of the following configurations are required ? ( Choose one or more ) .

A) the PPPoE Serve, R & lt on the configuration: [the RTA-virtual- Templatel] PPPoE -client-Number Dial-the bundle.1
B) Configure on PPPoE-Server : [RTA-Virtual-Templatel] pppoe- client dial -bundle-number l idle-timeout 65535
C) Configure on PPPoE Client : [HG-Dialerl] pppoe-client dial-bundle-number l idle -timeout O
D) Configure on PPPoE Client : [HG-Ethernet0/0] pppoe-client dial-bundle-number 1
E) Configure on PPPoE Server : [RTA- EthernetO/O] pppoe-client dial-bundle-number 1
F) Configure on PPPoE Client : [HG-Dialer l] pppoe-client dial-bundle-number l

4. Regarding the echo in the VoIP telephone system, which of the following descriptions are wrong ?

A) In a VoIP network, the echo is related to the choice of encoding.The greater the compression ratio, the greater the relative echo in the network.
B) language voice gateway equipment itself does not bring new echo, but the lP network brings network latency, increasing the echo time delay, leading to the original feel of the echo in VoIP become energy network Felt echo
C) speech voice gateway when performing analog to digital conversion may introduce echo, but can be configured to suppress echo in voice gateway function to reduce this effect
D) back sound into electrical echo and acoustic echo, a conventional telephone system is mainly due to two electrical echo, four-wire conversion impedance mismatch caused by

5. Which of the following configuration steps should be performed when configuring QoS Polic ?

A) with set behavior
B) with a set strategy
C) with home broadband
D) distribution counter classifiers

Solutions: