QUESTION 41
Referring to the exhibit, routers r1 and r2 are connected to each other by interfaces ge-5/3/0 and ge-5/3/1 respectively. They do not become OSPF neighbors.
Local traffic capture on r1:
Address resolution is OFF.
Listening on ge-5/3/0.0, capture size 1514 bytes
22:16:33.610374 Out IP (tos 0xc0, ttl 1, id 34562, offset 0, flags [none], proto: OSPF (89), length:
76) 10.1.2.1 > 224.0.0.5: OSPFv2, Hello, length 56 [len 44]
Router-ID 1.1.1.1, Backbone Area, Authentication TypE. none (0)
Options [External, LLS]
Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.252, Priority 128
LLS: checksum: 0xfff6, length: 3
Extended Options (1), length: 4
Options: 0x00000001 [LSDB resync]
[edit]
user@r1# run show ospf interface
Interface State Area DR ID BDR ID Nbrs
ge-5/3/0.0 PtToPt 0.0.0.0 0.0.0.0 0.0.0.0 0
lo0.1 DR 0.0.0.0 1.1.1.1 0.0.0.0 0
[edit]
user@r1# run show ospf neighbor
————————————————————————-
Local traffic capture on r2:
Address resolution is OFF.
Listening on ge-5/3/1.0, capture size 1514 bytes
22:16:42.238030 Out IP6 (class 0xc0, hlim 1, next-header: OSPF (89), length: 36)
fe80::6687:88ff:fe6c:6769 > ff02::5: OSPFv3, Hello, length 36
Router-ID 2.2.2.2, Backbone Area
Options [V6, External, Router]
Hello Timer 10s, Dead Timer 40s, Interface-ID 0.0.0.1, Priority 128
Neighbor List:
user@r2# run show ospf interface
OSPF instance is not running
Which two statements are true? (Choose two.)
A. r1 is configured for OSPFv3.
B. r1 is configured for OSPFv2.
C. r2 is configured for OSPFv2.
D. r2 is configured for OSPFv3.
Answer: BD
QUESTION 42
Referring to the exhibit, which two OSPF adjacency problems are present? (Choose two.)
May 20 22:27:04.010297 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0)
May 20 22:27:04.010320 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1
May 20 22:27:04.010342 checksum 0x166d, authtype 0
May 20 22:27:04.010365 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128
May 20 22:27:04.010387 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0
May 20 22:27:07.891698 OSPF periodic xmit from 192.168.0.1 to 224.0.0.5 (IFL 2684276180 area
0.0.0.0)
May 20 22:27:12.749988 OSPF packet ignored: area mismatch (0.0.0.1) from 192.168.0.2 on intf
ge-1/1/2.0 area 0.0.0.0
May 20 22:27:12.750071 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0)
May 20 22:27:12.750095 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1
May 20 22:27:12.750116 checksum 0x166d, authtype 0
May 20 22:27:12.750139 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128
May 20 22:27:12.750161 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0
May 20 22:27:14.393182 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0)
May 20 22:27:14.393262 Version 2, length 44, ID 10.10.10.1, area 0.0.0.0
May 20 22:27:14.393284 checksum 0x0, authtype 0
May 20 22:27:14.393307 mask 255.255.255.252, hello_ivl 50, opts 0x12, prio 128
May 20 22:27:14.393368 dead_ivl 200, DR 0.0.0.0, BDR 0.0.0.0
May 20 22:27:14.393399 OSPF packet ignored: our router ID received from 192.168.0.2 on intf
ge-1/1/2.0 area 0.0.0.0
A. hello interval mismatch
B. duplicate router ID
C. area type mismatch
D. area number mismatch
Answer: BD
QUESTION 43
Referring to the exhibit, why does only the loopback interface appear in the show ospf interface output?
[edit]
user@router# show interfaces
ge-1/1/2 {
vlan-tagging;
unit 100 {
vlan-id 100;
family inet {
address 192.168.0.1/30;
}
}
}
lo0 {
unit 0 {
family inet {
address 10.10.10.1/32;
}
}
}
[edit]
user@router# show protocols ospf
area 0.0.0.0 {
interface ge-1/1/2.0 {
interface-type p2p;
metric 250;
}
interface lo0.0;
}
[edit]
user@router# run show ospf interface
Interface State Area DR ID BDR ID Nbrs
lo0.0 DR 0.0.0.0 10.10.10.1 0.0.0.0 0
[edit]
A. The interface-type is not configured properly on the ge-1/1/2 interface.
B. The incorrect logical unit for the ge-1/1/2 interface is configured under the OSPF hierarchy.
C. The ge-1/1/2 interface is configured under the wrong OSPF area.
D. The metric configured on ge-1/1/2 is not valid.
Answer: B
QUESTION 44
Click the Exhibit button. You recently added an EBGP neighbor to R1 and you are receiving a single BGP route for their internal network. You notice that on R2 the route learned from C1 is being marked as hidden because the next hop is unusable.
Referring to the exhibit, what should you do to resolve the problem?
A. Create a next-hop-self import policy on R2 and apply this policy to IBGP.
B. Create a next-hop-self export policy on R1 and apply this policy to IBGP.
C. Create a next-hop-self import policy on R1 and apply this policy to EBGP.
D. Create a next-hop-self import policy and apply this policy to IBGP.
Answer: B
QUESTION 45
You have enabled graceful Routing Engine switchover (GRES). During verification, you switched mastership and all interfaces went down.
user@router> show system switchover
Graceful switchover: On
Configuration databasE. Ready
Kernel databasE. Version incompatible
Peer statE. Steady State
Referring to the output shown in the exhibit, why did the interfaces go down?
A. The synchronization failed because the Junos OS version on the backup is incompatible with the version running on the master.
B. The synchronization failed because the Junos OS version on the backup does not support GRES.
C. The synchronization failed because the Routing Engine models are different between the master and backup.
D. The synchronization failed because the master Routing Engine cannot communicate with the backup Routing Engine.
Answer: A
QUESTION 46
[edit]
user@router# show interfaces
ge-1/1/2 {
gigether-options {
802.3ad ae0;
}
}
ge-1/1/3 {
gigether-options {
802.3ad ae0;
}
}
ae0 {
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 100;
}
}
}
You are asked to configure a LAG. You configure and commit the configuration as shown in the exhibit. When verifying your ae0 interface, you encounter the following error:
[edit]
user@router# run show interfaces ae0
error: device ae0 not found
Which command would you use to resolve this problem?
A. set interfaces ae0 aggregated-ether-options lacp active
B. set chassis alarm ethernet link-down ignore
C. set chassis network-services ethernet
D. set chassis aggregated-devices ethernet device-count 1
Answer: D
QUESTION 47
You have configured a LAG and are now enabling LACP on the ae0 interface. You have configured and committed the configuration as shown in the exhibit. However, the exhibit also shows that the ae0 interface is now in the up/down state.
[edit]
user@R1# run show interfaces ge-1/1/2 terse
Interface Admin Link Proto Local Remote
ge-1/1/2 up up
ge-1/1/2.0 up up aenet –> ae0.0
[edit]
user@R1# run show interfaces ge-1/1/3 terse
Interface Admin Link Proto Local Remote
ge-1/1/3 up up
ge-1/1/3.0 up up aenet –> ae0.0
[edit]
user@R1# run show interfaces ae0 terse
Interface Admin Link Proto Local Remote
ae0 up down
ae0.0 up down bridge
[edit]
user@R1# show interfaces ae0
aggregated-ether-options {
lacp {
periodic slow;
system-priority 200;
}
}
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 100;
}
}
**************************************************************************
[edit]
user@R2# run show interfaces ge-1/1/2 terse
Interface Admin Link Proto Local Remote
ge-1/1/2 up up
ge-1/1/2.0 up up aenet –> ae0.0
[edit]
user@R2# run show interfaces ge-1/1/3 terse
Interface Admin Link Proto Local Remote
ge-1/1/3 up up
ge-1/1/3.0 up up aenet –> ae0.0
[edit]
user@R2# run show interfaces ae0 terse
Interface Admin Link Proto Local Remote
ae0 up down
ae0.0 up down bridge
[edit]
user@R2# show interfaces ae0
aggregated-ether-options {
lacp {
periodic fast;
system-priority 100;
}
}
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 100;
}
}
What must you do to resolve this problem?
A. Configure both routers’ ae0 LACP configuration to periodic fast.
B. Change the LACP system-priority of R1 to 300.
C. Configure R1’s LACP configuration as active.
D. Configure R2’s LACP configuration as passive.
Answer: C
QUESTION 48
Which CLI command is used to restart a software process?
A. restart
B. reboot
C. commit
D. reload
Answer: B
QUESTION 49
Which CLI command applies the candidate configuration to the active configuration?
A. load
B. merge
C. copy run start
D. commit
Answer: C
QUESTION 50
Which operational CLI command would you use to troubleshoot hardware-related problems?
A. show system
B. show chassis
C. show route
D. show cli
Answer: C
…go to http://www.lead2pass.com/JN0-690.html to download the full version Q&As.
