Juniper JN0-349 問題集

質問 1：
Which two statements about the default load-balancing behavior for the Junos OS are correct? (Choose two.)
A. By default, the Junos OS installs multiple equal-cost next hops in the forwarding table for a destination prefix.
B. By default, the Junos OS selects one of the equal-cost next hops for received destination prefixes.
C. By default, the Junos OS performs a per-packet load-balancing operation.
D. By default, all Packet Forwarding Engine slots are assigned the same hash value on the Junos device.
正解：B,D

質問 2：
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

質問 3：
Which two statements about aggregate routes in the Junos OS are correct? (Choose two.)
A. An aggregate route always shows as active in the routing table.
B. Only one aggregate route can be configured for each destination prefix.
C. An aggregate route has a default next hop of an IP address.
D. An active route can contribute only to a single aggregate route.
正解：B,D

質問 4：
Referring to the exhibit, which devices will receive the packet sent by User B?

A. User C, User A, and User D
B. User C
C. User A and User D
D. User C and User D
正解：D

質問 5：
You are concerned that someone from outside the company could use an open conference room port to access the network.
Which feature should you use to address this concern?
A. MAC limiting
B. persistent MAC learning
C. 802.1X
D. DHCP snooping
正解：C

質問 6：
Exhibit.

Referring to the exhibit, Router-1 and Router-2 are failing to form an IS-IS adjacency.
What should you do to solve the problem?
A. Remove the overloaded statement from Router-1.
B. Remove the ISO address from ge-0/0/2 on Router-1.
C. Change the ISO areas on the Io0 interfaces to match on both routers.
D. Change the IP subnet masks to match on the ge-0/0/2 interfaces of both routers.
正解：D

質問 7：
You have an OSPF NSSA area that is also receiving IS-IS routes on the ASBR.
In this scenario, which LSA type is used to announce external IS-IS routes?
A. Type 8
B. Type 1
C. Type 4
D. Type 7
正解：D

質問 8：
What is a purpose for the OSPF database description packet?
A. to transfer the LSA headers between two systems
B. to determine who is in charge of adjacency formation
C. to determine who is in charge of database flushing
D. to transfer the LSUs between two systems
正解：A