Juniper JN0-694 問題集

質問 1：
You are implementing Q-in-Q tunneling on an EX Series switch. You want the tunnel to
support all C-VLANs; however, only some VLANs are able to send traffic across the tunnel. Switch-1 has the following configuration:
[edit vlans]
user@Switch-1# show
v100 {
vlan-id 100;
interface {
ge-0/0/0.10;
ge-0/0/1.20;
}
dot1q-tunneling {
customer-vlans [ ];
}
}
What would solve this problem?
A. Implement RSTP.
B. Q-in-Q tunneling will not work in this scenario; use a Layer 2 VPN instead.
C. Remove the customer-vlans statement.
D. Add family ethernet-switching to the tunnel-side interface on Switch-1.
正解：B

質問 2：
-- Exhibit -user@R1> show ospf neighbor Address Interface State ID Pri Dead
10.222.0.2 ge-0/0/1.0 Init 10.222.1.2 128 32
user@R1> show ospf interface detail Interface State Area DR ID BDR ID Nbrs ge-0/0/1.0 DR 0.0.0.0 10.222.1.1 0.0.0.0 1 Type: LAN, Address: 10.222.0.1, Mask: 255.255.255.252, MTU: 1500, Cost: 1 DR addr: 10.222.0.1, Priority: 128 Adj count: 0 Hello: 10, DeaD. 40, ReXmit: 5, Not Stub Auth type: MD5, Active key ID. 10, Start time: 1970 Jan 1 00:00:00 UTC Protection type: None Topology default (ID 0) -> Cost: 1 lo0.0 DR 0.0.0.0 10.222.1.1 0.0.0.0 0 Type: LAN, Address: 10.222.1.1, Mask: 255.255.255.255, MTU: 65535, Cost: 0 DR addr: 10.222.1.1, Priority: 128 Adj count: 0 Hello: 10, DeaD. 40, ReXmit: 5, Not Stub Auth type: None Protection type: None Topology default (ID 0) -> Cost: 0
user@R2> show ospf neighbor
user@R2> show ospf interface detail Interface State Area DR ID BDR ID Nbrs ge-0/0/1.0 PtToPt 0.0.0.0 0.0.0.0 0.0.0.0 0 Type: P2P, Address: 10.222.0.2, Mask: 255.255.255.252, MTU: 1500, Cost: 1 Adj count: 0 Hello: 10, DeaD. 40, ReXmit: 5, Not Stub Auth type: MD5, Active key ID. 10, Start time: 1970 Jan 1 00:00:00 UTC Protection type: None Topology default (ID 0) -> Cost: 1 lo0.0 DR 0.0.0.0 10.222.1.2 0.0.0.0 0 Type: LAN, Address: 10.222.1.2, Mask: 255.255.255.255, MTU: 65535, Cost: 0 DR addr: 10.222.1.2, Priority: 128 Adj count: 0 Hello: 10, DeaD. 40, ReXmit: 5, Not Stub Auth type: None Protection type: None Topology default (ID 0) -> Cost: 0 -- Exhibit -
Click the Exhibit button.
You are trying to establish an OSPF adjacency between R1 and R2, but the adjacency does not establish.
Referring to the exhibit, what is causing the adjacency to fail?
A. The interface type is mismatched between R1 and R2.
B. The IP subnet mask is mismatched between R1 and R2.
C. The MD5 key ID values are mismatched between R1 and R2.
D. R1 has both family inet and family iso configured on the link toward R2.
正解：A

質問 3：
-- Exhibit -

-- Exhibit --
Click the Exhibit button.
You are troubleshooting an OSPF adjacency problem between R1 and R2.
Referring to the exhibit, what is causing this OSPF adjacency problem?
A. There is a dead interval mismatch.
B. There is an MTU mismatch.
C. There is an LSA refresh timer mismatch.
D. There is a hello interval mismatch.
正解：B

質問 4：
-- Exhibit --
policy-options {
policy-statement accept-static {
from protocol static;
then accept;
}
}
-- Exhibit --
Click the Exhibit button.
The policy shown in the exhibit is deployed on a router and used as the only BGP export policy. The router is sending only one BGP route to its peers. However, when you run the CLI command test policy accept-static 0.0.0.0/0, the policy matches thousands of routes.
Which statement explains this discrepancy?
A. The default policy for the test policy command is to accept all routes.
B. The default policy for BGP is to reject all routes.
C. The test policy command always shows all routes, regardless of whether they match the policy, when you use the 0.0.0.0/0 argument.
D. All policies have an implicit then accept final term.
正解：A

質問 5：
You are monitoring a network that is configured with PIM sparse mode. An end user's PC (PC1) joins a multicast stream. The stream never switches from the rendezvous-point tree (RPT) to the shortest-path tree (SPT).
Which two statements explain this behavior? (Choose two.)
A. This is the normal operation of PIM sparse mode.
B. The designated router for PCI's LAN does not have a route to the multicast source.
C. This is a source-specific multicast (SSM) stream.
D. An interface on the SPT is not configured for PIM.
正解：B,D