Juniper JN0-690 問題集

質問 1：
A technician has reported an alarm on your device running the Junos OS. You suspect it is due to the temperature in the rack. Which two commands will confirm your suspicion? (Choose two.)
A. show chassis firmware
B. show chassis hardware
C. show chassis alarms
D. show chassis environment
正解：C,D

質問 2：
Which two statements are true regarding BGP path MTU discovery? (Choose two.)
A. BGP path MTU discovery provides the most efficient use of link bandwidth.
B. BGP path MTU discovery can be enabled only for IBGP sessions.
C. BGP path MTU discovery must be configured on every router along the path.
D. BGP path MTU discovery alleviates fragmentation problems.
正解：A,D

質問 3：
Which two actions are required when performing a unified in-service software upgrade (ISSU)? (Choose two.)
A. You must disable graceful Routing Engine switchover (GRES) if the Layer 2 Control Protocol is in use.
B. You must enable graceful Routing Engine switchover (GRES).
C. You must enable nonstop active routing (NSR).
D. You must disable nonstop bridging (NSB) if the Layer 2 Control Protocol is in use.
正解：B,C

質問 4：
-- Exhibit -[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;
}
}
-- Exhibit --
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.
What must you do to resolve this problem?
A. Configure R2's LACP configuration as passive.
B. Change the LACP system-priority of R1 to 300.
C. Configure R1's LACP configuration as active.
D. Configure both routers' ae0 LACP configuration to periodic fast.
正解：C

質問 5：
Click the Exhibit button.
-- Exhibit -user@r2# run show route 100.1.1.0/24 detail
inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
100.1.1.0/24 (1 entry, 1 announced) *Static PreferencE. 5 Next hop typE. Reject Address: 0x8f7b5a4 Next-hop reference count: 2 StatE. Local AS: 65001 AgE. 59 Task: RT Announcement bits (1): 2-KRT AS path: 65005 I
user@r2# show protocols bgp
group ibgp { type external; export to-bgp; neighbor 10.1.2.1 { local-address 10.1.2.2; family inet { unicast; } family inet6 { unicast; } peer-as 65005; }
}
user@r2# run show bgp summary Groups: 1 Peers: 1 Down peers: 0 Table Tot Paths Act Paths Suppressed History Damp State Pending inet6.0
0 0 0 0 0 0 inet.0 0 0 0 0 0 0 Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
10.1.2.1 65005 31 31 0 0 12:08 Establ inet6.0: 0/0/0/0 inet.0: 0/0/0/
user@r2# show policy-options
policy-statement to-bgp { from protocol static; then accept;
}
user@r2# run show route advertising-protocol bgp 10.1.2.1
[edit] user@r2# -- Exhibit -
Referring to the exhibit, router r2 does not advertise the static route to peer 10.1.2.1. What is the problem?
A. The export policy should be applied under the [edit protocols bgp group ibgp neighbor 10.1.2.1] hierarchy.
B. The export policy is incorrect.
C. An AS path loop is detected.
D. The static route has Next hop typE. Reject.
正解：C

質問 6：
Which three commands will provide details about CPU utilization on a line card? (Choose three.)
A. show chassis hardware
B. request pfe execute target fpc1 command "show arp"
C. request pfe execute target fpc1 command "show sched"
D. request pfe execute target fpc1 command "show thread"
E. show chassis fpc
正解：C,D,E