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H3C GB0-391 Exam Syllabus Topics:

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

Question 1

Which of the following statements about EPCN are correct?

A. EPCN is an active EoC technology, and the user terminal is an active device, thus avoiding the limitation of the network topology without passive EoC technology.
B. EPCN system main memory deployment coaxial cable distribution network portion of the network, the HFC backbone mainly EPON technology fit therewith.
C. EPCN conforms to HFC- based broadband access specifications such as DOCSIS 1.0/1.1/2.013.0 .
D. EPCN is a passive EoC technology.The user terminal is a passive device, and the system transmission loss tolerance is low, which limits its application scope to a certain extent.

Question 2

Among the following fiber access methods, the highest degree of fiberization is

A. FTTC
B. FTTH
C. FTTA
D. FTTB

Question 3

Which of the following factors will not affect VoIP voice quality____

A. selected encoding type used
B. back sound
C. selected by signaling type
D. Packet loss on IP network

Question 4

When the link type of the ONU port is Trunk , its processing method for downstream messages is _____ .

A. Only allow the packets with the default VLAN tag to pass and remove the tag
B. Only allow tagged messages to pass
C. only allowed without Tag packets to pass through, and the packets add the default VLAN of Tag
D. for without receipt of the Tag message, add the default VLAN Tag ; for received with Tag packets forwarded directly

Question 5

Common VPI/VCI values in ADSL applications include ____ .( Choose one or more )

A. 0/16
B. 0/35
C. 0/30
D. 0/32

Solutions: