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

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H3C GB0-391 Exam Syllabus Topics:

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. In the conservative label retention mode, illustrated by networking, LSR2 can keep what stage LSR needle to 20.0.0.1/24 tag information that route ?

A) LSR3
B) LSR1
C) LSR5
D) LSR4

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

A) speech voice gateway device when performing analog to digital conversion may introduce echo, an echo suppression function but can be configured to reduce the impact on the voice gateway.
B) In VoIP networks, echo is related to the choice of encoding.The greater the compression ratio, the greater the relative echo in the network.
C) back sound into electrical echo and acoustic echo, electrical echo conventional telephone systems is mainly due to two, four-wire transducer impedance mismatch caused by
D) language voice gateway equipment itself does not bring new echo, but the IP network to bring network latency, increasing the echo time delay, leading to the original feel of the echo in VoIP become energy network The echo of being felt.

3. Which statement about RED ( Random Early Detection ) is correct?

A) The higher the priority of the packet , the lower the drop probability.Which means less discarded
B) In discarded after a congested port
C) flat average queue length is greater than the maximum discard threshold, packets are dropped randomly
D) flat average queue length is less than the minimum discard threshold, discarding packets not
E) flat average queue length is less than the minimum discard threshold, less than the maximum discard threshold, packets are dropped randomly

4. Ethernet 1000BASE-T cable uses a standard _____ most large transmission distance is ______ .

A) 4 pairs of Category 5 UTP twisted pair, 100m
B) multi- mode fiber, 2000m
C) 2 pairs of Category 5 UTP twisted pair, 100m
D) 2 pairs of STP twisted pair, 25m
E) 4 pairs of Category 3 UTP twisted pair, 100m
F) single -mode optical fiber, 5000m

5. The means of business isolation in the local area network are ______ .

A) PVP
B) VLAN
C) mixed together port
D) Super VPN

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