Juniper JN0-643 Exam Practice Questions (P. 4)

Which statement is true regarding the SPF algorithm?

You are asked to configure graceful restart in your network.

Which OSPF LSA type would you expect to see in the LSDB?

-- Exhibit

-- Exhibit --
Click the Exhibit button.

Referring to the exhibit, which answer is correct?

-- Exhibit --
user@router> show ospf database network extensive

OSPF link state database, area 0.0.0.1

Type ID Adv Rtr Seq Age Opt Cksum Len
Network 10.222.1.1 192.168.20.1 0x80000002 813 0x2 0x 32 mask 255.255.255.0 attached router 192.168.20.1 attached router 192.168.40.1

Aging timer 00:46:27 -
Installed 00:13:32 ago, expires in 00:46:27, sent 1w5d 01:07:09 ago

-- Exhibit --
Click the Exhibit button.

Referring to the exhibit, which statement is true regarding the OSPF network LSA?

-- Exhibit --
user@router> show log ospf
Sep 19 00:22:13.420315 OSPF packet ignoreD. MTU mismatch from 11.0.0.2 on intf ge-0/0/2.0 area 0.0.0.0
Sep 19 00:22:14.475671 OSPF periodic xmit from 14.0.0.1 to 224.0.0.5 (IFL 75 area 0.0.0.0)
Sep 19 00:22:14.855490 OSPF periodic xmit from 12.0.0.1 to 224.0.0.5 (IFL 84 area 0.0.0.0)
Sep 19 00:22:14.857304 OSPF packet ignoreD. no matching interface from 12.0.0.1, IFL 85
Sep 19 00:22:17.386726 OSPF packet ignoreD. MTU mismatch from 11.0.0.2 on intf ge-0/0/2.0 area 0.0.0.0
Sep 19 00:22:20.855690 OSPF packet ignoreD. subnet mismatch from 10.0.0.2 on intf ge-0/0/1.0 area 0.0.0.0
Sep 19 00:22:20.856108 OSPF rcvd Hello 10.0.0.2 -> 224.0.0.5 (ge-0/0/1.0 IFL 75 area 0.0.0.0)
Sep 19 00:22:20.856177 Version 2, length 44, ID 10.0.0.2, area 0.0.0.0
Sep 19 00:22:20.856229 checksum 0x0, authtype 0
Sep 19 00:22:20.856299 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128
Sep 19 00:22:20.856352 dead_ivl 40, DR 0.0.0.0, BDR 0.0.0.0
Sep 19 00:22:21.752438 OSPF packet ignoreD. MTU mismatch from 11.0.0.2 on intf ge-0/0/2.0 area 0.0.0.0
Sep 19 00:22:22.013285 OSPF packet ignoreD. area mismatch (0.0.0.1) from 12.0.0.2 on intf ge-0/0/4.0 area 0.0.0.0
Sep 19 00:22:22.013749 OSPF rcvd Hello 12.0.0.2 -> 224.0.0.5 (ge-0/0/4.0 IFL 84 area 0.0.0.0)
Sep 19 00:22:22.013804 Version 2, length 44, ID 10.0.0.2, area 0.0.0.1
Sep 19 00:22:22.013890 checksum 0xd51e, authtype 0
Sep 19 00:22:22.013944 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128
Sep 19 00:22:22.014012 dead_ivl 40, DR 12.0.0.2, BDR 0.0.0.0
Sep 19 00:22:22.016909 OSPF packet ignoreD. no matching interface from 12.0.0.2, IFL 85
Sep 19 00:22:22.434956 OSPF hello from 11.0.0.2 (IFL 83, area 0.0.0.0) absorbed
Sep 19 00:22:23.045916 OSPF periodic xmit from 12.0.0.1 to 224.0.0.5 (IFL 84 area 0.0.0.0)
Sep 19 00:22:23.047959 OSPF packet ignoreD. no matching interface from 12.0.0.1, IFL 85
Sep 19 00:22:23.309957 OSPF periodic xmit from 11.0.0.1 to 224.0.0.5 (IFL 83 area 0.0.0.0)
Sep 19 00:22:23.528614 OSPF periodic xmit from 14.0.0.1 to 224.0.0.5 (IFL 75 area 0.0.0.0)
Sep 19 00:22:25.772835 OSPF packet ignoreD. MTU mismatch from 11.0.0.2 on intf ge-0/0/2.0 area 0.0.0.0
Sep 19 00:22:29.950015 OSPF hello from 11.0.0.2 (IFL 83, area 0.0.0.0) absorbed
Sep 19 00:22:30.622112 OSPF packet ignoreD. MTU mismatch from 11.0.0.2 on intf ge-0/0/2.0 area 0.0.0.0
Sep 19 00:22:30.713279 OSPF packet ignoreD. subnet mismatch from 10.0.0.2 on intf ge-0/0/1.0 area 0.0.0.0
Sep 19 00:22:30.713432 OSPF rcvd Hello 10.0.0.2 -> 224.0.0.5 (ge-0/0/1.0 IFL 75 area 0.0.0.0)
Sep 19 00:22:30.713503 Version 2, length 44, ID 10.0.0.2, area 0.0.0.0
Sep 19 00:22:30.713553 checksum 0x0, authtype 0
Sep 19 00:22:30.713622 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128
Sep 19 00:22:30.713677 dead_ivl 40, DR 0.0.0.0, BDR 0.0.0.0
-- Exhibit --
Click the Exhibit button.

Referring to the exhibit, what is preventing the OSPF adjacency on interface ge-0/0/4 from forming?