Juniper JN0-349 問題集

質問 1：
Which two statements about Layer 2 loop prevention protocols are correct? (Choose two.)
A. STP can take 30 to 50 seconds to respond to a topology change.
B. RSTP can take 30 to 50 seconds to respond to a topology change.
C. STP distributes the current tree topology using the root bridge.
D. RSTP distributes the current tree topology using the root bridge.
正解：A,D

質問 2：
Click the Exhibit button.

Your company has connections to two ISPs. Each ISP is in a separate routing instance. You need to advertise the 0.0.0.0/0 prefix from both ISPs to all your devices.
Referring to the exhibit, which statement is true in this scenario?
A. You must create an internal routing instance for your network.
B. You must create and apply match input filters on interfaces ge-0/0/2 and ge-0/0/3.
C. You must create a RIB group to share interface routes.
D. You must create a policy to allow traffic from your network to each ISP.
正解：C

質問 3：
A BGP session shows the state as active.
What does the state indicate in this scenario?
A. The BGP session is fully established and routes are being passed.
B. The routes are still trying to establish a TCP connection.
C. A keepalive message has been received.
D. The TCP connection is successful, and BGP is waiting for the OPEN message from its peer.
正解：B

質問 4：
Your router is learning the 172.25.11.0/24 prefix from both the BGP and OSPF protocols. A routing policy is configured on your device to advertise the prefix to an established BGP peer but the peer is not receiving the prefix. You want to allow the prefix to be advertised to the BGP peer.
What should you do on this router to satisfy this requirement?
A. Enable the automatic removal of private AS numbers from the prefix.
B. Enable the automatic refreshing of BGP routes.
C. Enable the advertisement of inactive BGP routes.
D. Enable the automatic removal of peer AS information from the prefix.
正解：C

質問 5：
Click the Exhibit button.

Referring to the exhibit, which port will be selected as the RSTP root port on Switch-4?
A. ge-0/0/9.0
B. ge-0/0/13.0
C. ge-0/0/8.0
D. ge-0/0/12.0
正解：D

質問 6：
What are two interarea OSPF LSA types? (Choose two.)
A. Type 4 ASBR summary LSAs
B. Type 3 summary LSAs
C. Type 2 network LSAs
D. Type 1 router LSAs
正解：A,B

質問 7：
Click the Exhibit button.

Referring to the exhibit, which statement is correct?
A. The bridge priority on the root device is set to 8k.
B. The local bridge priority is set to 8k.
C. The spanning tree session has timed out.
D. The device is the root bridge?
正解：A

質問 8：
You must limit access to a printer with a persistent DHCP address of 2001:db8:0000:50::10/64 in VLAN v50 to users assigned to VLAN v50 only.
Which action would satisfy this requirement?
A. Implement persistent MAC learning to ensure that 2001:db8:0000:50::10 is allocated properly.
B. Implement a firewall filter on the IRB interface for VLAN v50, blocking traffic to/from 2001:db8:0000:50::10.
C. Implement a firewall filter on the VLAN v50, blocking traffic to/from 2001:db8:0000:50::10.
D. Implement DHCP snooping on VLAN v50 to ensure that 2001:db8:0000:50::10 is allocated properly.
正解：B