Juniper JN0-660 問題集

質問 1：
Click the Exhibit button.

Customer A is complaining that CE1 and CE2 cannot form an OSPF adjacency across your LDP Layer 2 circuit. The physical topology of the network is CE1-PE1-P-PE2-CE2. PE1's loopback is 192.168.5.1, P's loopback is 192.168.6.1, and PE2's loopback is 192.168.7.1.
Referring to the output in the exhibit, what is the problem?
A. extended LDP neighbor not established
B. mismatched interface encapsulations
C. incorrect PE-CE interface configuration
D. mismatched virtual circuit ID values
正解：D

質問 2：
What are two requirements of Layer 2 VPN BGP route reflectors? (Choose two.)
A. Routes are kept in the inet.2 table.
B. Route reflectors must support the l2vpn family.
C. Routes are kept in the bgp.l2vpn.0 table.
D. Route reflectors must support the inet-vpn family.
正解：B,C

質問 3：
Click the Exhibit button.

R3 and R4 want to establish an EBGP session between each other's loopback addresses. Static routes have been configured for the loopback addresses and you can ping from loopback to loopback. Their EBGP sessions are configured with multihop to allow for additional hops. The correct AS numbers have been specified at the [routing-options] hierarchy as well. Considering the topology in the exhibit, which statement is true?
A. Each peer must specify a local-as within their EBGP configuration for the session to establish.
B. BGP's protocol preference must be adjusted to be lower than protocol static for the session to establish.
C. Each peer must configure multipath for the session to establish.
D. Each peer must configure a local-address of their own loopback for the session to establish.
正解：D

質問 4：
You are asked to share a customer's routes between two separate Layer 3 VPNs. The VPNs must remain separate. None of the shared routes should be sent to the remote PE devices.
Which two configuration elements are used to meet these requirements? (Choose two.)
A. [edit policy-options policy-statement vpnb-export]
user@router# show
term 1 {
from {
protocol bgp;
interface ge-0/0/1.0;
}
then {
community add vpnb-target;
accept;
}
}
term 2 {
then reject;
}
B. auto-export
C. export-rib
D. [edit policy-options policy-statement vpnb-export]
user@router# show
term 1 {
from {
protocol bgp;
interface ge-0/0/1.0;
}
then {
community add vpnb-target;
accept;
}
}
正解：A,B

質問 5：
You have an AS boundary router which is also an area border router with an NSSA attached.
Which two LSA types are exported into the NSSA by default? (Choose two.)
A. Type 7
B. Type 9
C. Type 5
D. Type 3
正解：A,D

質問 6：
-- Exhibit -

-- Exhibit -
Click the Exhibit button.
The exhibit displays an IS-IS topology and IS-IS configuration for R1, R2, and R3. R3 is redistributing the 10.100.100.0/24 route into IS-IS as an external IS-IS route. However, the 10.100.100.0/24 route is automatically being leaked into Area 49.2222.
How do you stop the automatic route leaking of the 10.100.100.0/24 prefix?
A. Remove the level 2 wide-metrics-only statement from R2.
B. Remove the level 1 wide-metrics-only statement from R2.
C. Remove the level 1 wide-metrics-only statement from R3.
D. Remove the level 2 wide-metrics-only statement from R1.
正解：C

質問 7：
-- Exhibit - -- Exhibit -

Click the Exhibit button.
Referring to the exhibit, which two configuration steps must be implemented so that LSPs will be able to use link protection from R1 to R3? (Choose two.)
A. Configure each eligible LSP for link protection.
B. Configure each eligible interface for link protection.
C. Configure each eligible router's protocol RSVP for fast reroute.
D. Configure each eligible router's protocol MPLS for link protection.
正解：A,B