Question 1

In a GPON network, which of the following may cause the ONT to fail to be discovered? (Select All that Apply)

Options :

A : The optical power received by the ONT is less than the sensitivity threshold.

B : The ONT auto-find function of the GPON port is disabled.

C : The upstream port of the OLT is down.

D : The optical power received by the ONT is greater than the overload optical power.

Answer: A,B,D

Question 2

Which of the following statements about static route configuration is correct?

Options :

A : The preference is mandatory.

B : The next hop is mandatory.

C : The mask parameter is optional.

D : The mask parameter is mandatory.

Answer: D

Question 3

The routing table of a router contains the following two entries: Destination/Mask Protocol Pre Cost Nexthop Interface 9.0.0.0/8 OSPF 10 50 1.1.1.1 Serial0 9.1.0.0/16 RIP 100 5 2.2.2.2 Ethernet0 If the router needs to forward packets with the destination address of 9.1.4.5, which of the following statements is correct?

Options :

A : The router selects the first route, because the priority of OSPF is higher.

B : The router selects the second route, because this route matches the destination address 9.1.4.5 more accurately.

C : The router selects the second route, because the metric of RIP is smaller.

D : The router selects the second route, because the outbound interface is Ethernet0, which is faster than Serial0.

Answer: B

Question 4

Which of the following commands can be used to query the receive optical power of an ONU?

Options :

A : display ont optical-info

B : display pon optical-info

C : display board

D : display port state

Answer: A

Question 5

After the server receives the DHCP REQUEST packet, if the server cannot allocate an IP address due to certain reasons, the server sends the ( ) packet as a response.

Options :

A : DHCP REFRESH

B : DHCP DISCOVER

C : DHCP REQUEST

D : DHCPNAK

Answer: D

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