H31-311 Online Test Engine - 100% Free Demo Questions - Dumps4Download.com
Question: 1
When a fiber cut test is performed on a normal MSP ring, which of the following alarms is reported?
(Multiple Choice)
A. TU-AIS
B. R-LOS
C. APSJNDI
D. BD STATUS
Answer: BC
Question: 2
When a bridge uses the IVL learning mode, the entry in the MAC address table is created according to the source MAC address and source port of the data frame. This entry is valid for all VLANs.
A. TRUE
B. FALSE
Answer: B
Question: 3
Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.
A. 50
B. 100
C. 200
D. 20
Answer: B
Question: 4
The SNCP switching speed can be improved if you classify the SNCP services that have the same source, sink, or route into groups.
A. TRUE
B. FALSE
Answer: A
Question: 5
The standard Ethernet frame length should not be less than 64 bytes. Which of the following factors
cause this limitation? (Multiple Choice)
A. Minimum transmission distance
B. Maximum transmission distance
C. Working mechanism of conflict detection
D. MAC address
Answer: BC
Question: 6
The device IP addresses of the gateway NE and non-gateway NEs must be set in the same network
segment.
A. TRUE
B. FALSE
Answer: B
Question: 7
Which of the following are the service board types of MSTP devices? (Multiple Choice)
A. Interface board
B. Service processing board
C. Service processing board with interfaces
D. Auxiliary board
Answer: ABC
Question: 8
When the LCAS function is used/ which of the following overhead bytes are used to transmit control
information? (Multiple Choice)
A. M1
B. H4
C. K2
D. K4
Answer: BD
Question: 9
Which of the following are the electrical-layer overheads of OTN? (Multiple Choice)
A. OPUk
B. ODUk
C. OCh
D. OTUk
Answer: ABD
Question: 10
The working mode of a port determines the flow control mode of the port. When the working mode is
100 Mbit/s full duplex, which of the following flow control modes can be used?
A. Auto-negotiation flow control mode
B. Non-auto-negotiation flow control mode
C. Both of the above
D. None of the above
Answer: B
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