Juniper JN0-690 問題集

質問 1：
Which three statements are correct about rpd related troubleshooting on devices running the Junos OS? (Choose three.)
A. A possible cause for an overworked rpd is excessive protocol tracing.
B. Excessive protocol tracing can never be a cause for an overworked rpd.
C. A log for rpd scheduler slip is an indication of something that should be investigated and resolved.
D. A possible method to troubleshoot rpd scheduler slips is to temporarily enable task accounting.
E. A log for rpd scheduler slip is a common, harmless syslog and can be ignored.
正解：A,C,D

質問 2：
-- Exhibit --
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 -- Exhibit -
Click the Exhibit button.
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.
Which two statements are true? (Choose two.)
A. r2 is configured for OSPFv2.
B. r1 is configured for OSPFv3.
C. r2 is configured for OSPFv3.
D. r1 is configured for OSPFv2.
正解：C,D

質問 3：
Which CLI command is used to restart a software process?
A. restart
B. commit
C. reboot
D. reload
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
-- Exhibit -
[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;
}
}
}
-- Exhibit -
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 chassis alarm ethernet link-down ignore
B. set chassis aggregated-devices ethernet device-count 1
C. set chassis network-services ethernet
D. set interfaces ae0 aggregated-ether-options lacp active
正解：B

質問 5：
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 and apply this policy to IBGP.
B. Create a next-hop-self import policy on R1 and apply this policy to EBGP.
C. Create a next-hop-self import policy on R2 and apply this policy to IBGP.
D. Create a next-hop-self export policy on R1 and apply this policy to IBGP.
正解：D

質問 6：
You have configured and successfully committed the configuration for nonstop active routing (NSR). Which command would you use to determine if NSR is operating correctly?
A. Use the show system synchronization command on the master and the backup Routing Engines.
B. Use the show task replication command on the master and the backup Routing Engines.
C. Use the show task replication command only on the master Routing Engine.
D. Use the show system synchronization command only on the master Routing Engine.
正解：B