[Dec 07, 2021] Pass H31-311-ENU Review Guide, Reliable H31-311-ENU Test Engine
H31-311-ENU Test Engine Practice Test Questions, Exam Dumps
NEW QUESTION 37
MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an in loop, you can set the PHY loopback according to the actual situation.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 38
According to the formula of "ODUk rate = 239/(239-k) x STM-N frame rate", the ODU4 rate is equal to 239/235 x STM-N frame rate.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 39
The rate of STM-1 is ( ) bit/s.
- A. 9*270*1*8000
- B. 9*270*8000
- C. 9*270*1*8000*16
- D. 9*270*1*8000*8
Answer: D
NEW QUESTION 40
Which of the following alarms does not trigger the AU-AIS alarm?
- A. AU-LOP
- B. R-LOS
- C. B2-EXC
- D. MS-AIS
Answer: A
NEW QUESTION 41
On a Layer 2 switching device, if the Ethernet port is an Access port, the port can receive only the Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 42
Which of the following effects is used by the Raman amplifier?
- A. Self-phase modulation (SPM)
- B. Four-wave mixing (FWM)
- C. Dispersion
- D. Raman scattering
Answer: D
NEW QUESTION 43
Which of the following working windows is indicated by "2" in the optical module parameter "L-64.2"?
- A. 1510 nm
- B. 880 nm
- C. 1310 nm
- D. 1550 nm
Answer: D
NEW QUESTION 44
In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 45
Which of the following are the steps for multiplexing low-speed services into high-speed SDH services? (Multiple Choice)
- A. Alignment
- B. Mapping
- C. Multiplexing
- D. Overhead insertion
Answer: A,B,C
NEW QUESTION 46
The difference between a dispersion compensation fiber and a common fiber is that the dispersion compensation fiber has a negative dispersion coefficient at ().
- A. 800 nm
- B. 1310 nm
- C. 1550 nm
- D. 1650 nm
Answer: C
NEW QUESTION 47
The SL64 board can be used in an OSN 2500.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 48
Which of the following is not an EVPLAN feature?
- A. Forwarding based on MAC addresses
- B. Bandwidth sharing
- C. Point-to-point and point-to-multipoint topologies
- D. Multipoint-to-multipoint topology
Answer: C
NEW QUESTION 49
When the lower-order resources of a device are insufficient, which of the following measures can be taken? (Multiple Choice)
- A. Configure VC4 services.
- B. Configure a VC4 server trail.
- C. Combine available lower-order resources.
- D. Use a cross-connect board with a larger lower-order cross-connect capacity.
Answer: A,C,D
NEW QUESTION 50
Only one TCM can be used at a site.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 51
The number of ODU2e signals multiplexed into an ODU3 signal is the same as that of ODU2 signals multiplexed into an ODU3 signal.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 52
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