Practice Free H35-211_V2.5-ENU Exam Online Questions
Since a normal ON cannot actively emit light, and a regular optical power meter can only connect to either the uplink or downlink optical path at the same time, a regular optical power meter cannot measure the uplink optical power of the ONU.
- A . True
- B . False
Before performing traffic scheduling, the OLT needs to classify the service flows. Which of the following options can be used as a flow classification method? (Multiple choice)
- A . The TOS field of the IP packet
- B . The DSCP field of the IP packet
- C . COS field of 802.IP
- D . The EXP field of the MPLS message
For large POL campuses, the recommended ODN network planning scheme is a four-point, three-line structure.
- A . TRUE
- B . FALSE
In Type B protection mode, when all ONUs under the PON port are offline, which of the following descriptions is correct?
- A . The device will continuously perform loop checks on the work port and the protection port until an ONU comes online.
- B . The work port remains unchanged and is in a stable state.
- C . After the work port automatically switches to the protect port, it switches back to the work port to reach a stable state.
- D . After the working port automatically switches to the protected port, it is in a stable state.
When deploying GPON Type B single-homing protection, the operating mode of the GPON port protection pair is ().
- A . portstate
- B . all
- C . dual-parenting
- D . timedelay
If a customer requires protection for the ONU backbone optical path but not for the branch optical paths of each ONU, which PON line protection method should be used?
- A . Type D
- B . Type B
- C . Type A
- D . Type C
For message priority handling at outgoing ports, mapping or direct setting methods can be adopted.
Which of the following descriptions of priority handling is correct?
- A . Regardless of the priority setting method, the corresponding priority must be tag-in-package.
- B . There is a strict one-to-one correspondence between the priority mapping of outgoing and incoming packets. The priority of the outer VLAN cannot be mapped to the priority of the inner VLAN.
- C . Priority mapping can be set separately for inner and outer layer priorities.
- D . Priority mapping needs to match the corresponding mapping template, and the mapping relationship within the template is fixed.
In Ethernet port protection groups, which description regarding the Portstate protection group and the Timedelay protection group is incorrect?
- A . Portstate performs link switching based on port status.
- B . Portstate protection group, protecting ports in their normally open state.
- C . Timedelay performs link switching based on port status.
- D . Timedelay protection group, protecting the port when it is normally open.
When planning QoS, it is necessary to plan reasonably according to business needs. Generally, high-priority business uses the () scheduling mode.
- A . PQ
- B . RR
- C . DRR
- D . WRR
Which of the following descriptions about the function of an optical distribution frame (ODF) is incorrect?
- A . Optical connector installation and optical path patching
- B . Storage of excess fiber optic pigtails and protection of optical cables
- C . Fiber optic splicing at the fiber optic cable termination
- D . It can split a single optical signal into multiple optical signals and perform the reverse process.