Practice Free H12-931_V2.0-ENU Exam Online Questions
MSTP (Multi-Service Transport Platform) is a multi-service transmission technology based on (), which can simultaneously realize the access, processing and transmission of multiple services such as TDM, ATM, Ethernet, IP, etc.
The length range of the DATA field in the Ethernet frame structure is ().
- A . 46-1500 bytes
- B . 46-1518 bytes
- C . Sections 64-1518
- D . 64-1500 bytes
When shutting down the U2000 dual-machine system (Solaris), the following commands are used:
What is the correct order in which these commands appear?
- A . ①②④③
- B . ②①④③
- C . ④①②③
- D . ④②①③
PTN equipment uses PWE3 to achieve unified carrying of multiple services. For users, PTN equipment is equivalent to a Layer 2 switch.
- A . True
- B . False
Which of the following descriptions about ASON service association is wrong?
- A . After service association is configured, when one LSP is rerouted or optimized, it is separated from the other LSP as much as possible and does not completely overlap with the associated LSP.
- B . ASON does not support the creation of services associated with different nodes.
- C . Business association is to associate two businesses together, and is mainly used to access businesses with two access points.
- D . The access points associated with the service can be two different line boards or two different network elements.
Which of the following options may cause BUS_ERR to be reported? (Multiple choice)
- A . LOS (the service board or cross-connect board channel is not open; the pin is reversed, and the board is not plugged in tightly)
- B . OOF (clock loss: clock and frame header jitter; no clock board inserted)
- C . Receive FFQ overflow small clock, frame header jitter; no clock board inserted)
- D . LOF (same as LOS; clock loss; physical board position and logical board position of service slot are inconsistent)
The same physical board or two adjacent network elements supports a maximum of several VC12 virtual TE links.
- A . 4
- B . 1
- C . 2
- D . 8
Which of the following are the optical network element types defined in U2000? (Multiple choice)
- A . WDM_OADM
- B . WDM_OLA
- C . WDM_OTM
- D . WDM_OFQ
WDM is a technology that transmits () optical signals simultaneously on the same optical fiber.
It is found that the U2000 dual machines in the customer network are in dual-active state. Which of the following measures and descriptions of this problem is correct? (Multiple choice)
- A . You can first check the running status of the primary and backup machines to see if there are any abnormalities.
- B . Check whether the heartbeat line between the master and the standby machines is working properly
- C . If the DCN is faulty, you can use the command #vradmin -g datadg repstatus datarvg at the primary site to check the status of the high availability system after repair.
- D . Run the command #vradmin -g datadg repstatus datarvg and find that the data status is "Consistcnt, up-to-date", indicating that the primary and backup data are not synchronized.