H3C GB0-391 Certification Exam Sample Questions and Answers

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H3C GB0-391 (Constructing Secure Optimized WANs) Sample Questions:

01. What is incorrect about the description of L2TP VPN and SSL VPN?
(Choose one or more)
a) have no need to install, maintain client
b) All support lP access mode
c) are based on TCP package
d) Both support Web access
02. A company network through the corporate router RTA access port S0 / 0 is connected to the external network. In order to avoid congestion at the egress of the external network, the company hopes to limit the data traffic of various departments in the inbound direction of the RTA interface S0/0.
Which of the following technologies is appropriate?
a) GTS
b) WRR
c) LR
d) CAR
03. For the two upstream and downstream LSRs, for the label forwarding table of the same forwarding equivalence class, the correct description is _______.
a) the swim LSR the label value of the label value is the same as the downstream equipment
b) the swim LSR same outgoing label and the label value of the downstream equipment
c) the tour LSR same tag value into a tag value to downstream devices
d) the tour LSR same label value into the label value to downstream devices
04. Based on SOA network architecture to enterprise IT systems into which of the following levels?
a) service service layer
b) business service layer
c) the number of data layers
d) lP network layer
05. In a VoIP network, which of the following factors are related to the bandwidth saved by VAD technology?
(Choose one or more)
a) selected by signaling type
b) said language and characteristics of the speaker
c) mesh network congestion degree
d) selected encoding type used
06. When the user uses the phone, after picking up the phone handle and inputting the called number, which of the following signaling does the ringing of the called phone belong to ______.
a) letter information signaling
b) Call call signaling
c) to address signaling
d) monitoring tube signaling
07. How does the PPP protocol identify the upper layer packets it carries as MPLS packets?
a) In the PPP head of the PPP Protocol field word segment to fill in 8847
b) In the PPP Association meeting NCP negotiation is completed the peer negotiation phase
c) In the PPP head of the PPP Protocol field word segment to fill in 0281
d) In the PPP Association meeting LCP negotiation is completed the peer negotiation phase
08. Which of the following statements about LR is incorrect is?
(Choose one or more)
a) It is an active traffic adjustment measure that limits the total rate of packets sent downstream from an interface
b) bits at the link layer, all packets outgoing from the interface can take effect (critical packets except packets)
c) Not valid for non- IP packets
d) so that the flow rate is measured using the token bucket algorithm, would exceed the committed rate of packets into the queue buffer again, it reduces the overall packet loss rate, smooth traffic, introduces additional delay.
09. A VoIP network using the H.323 protocol is interconnected with the PSTN network. Which of the following components must be included in the VoIP network to ensure that users can make local calls from the VoIP network?
a) Shou
b) terminating end
c) MCU
d) net off
10. Common VPI/VCI values in ADSL applications include ____.
(Choose one or more)
a) 0/35
b) 0/16
c) 0/32
d) 0/30


Question: 01

Answer: a, c, d

Question: 02

Answer: d

Question: 03

Answer: c

Question: 04

Answer: a

Question: 05

Answer: b, d

Question: 06

Answer: d

Question: 07

Answer: c

Question: 08

Answer: b, c

Question: 09

Answer: b, d

Question: 10

Answer: a, c

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