JN0-349 Online Practice Questions and Answers

Which two statements about Layer 2 loop prevention protocols are correct? (Choose two.)

A. RSTP distributes the current tree topology using the root bridge.

B. STP can take 30 to 50 seconds to respond to a topology change.

C. RSTP can take 30 to 50 seconds to respond to a topology change.

D. STP distributes the current tree topology using the root bridge.

You are configuring IBGP and you must ensure that reachability is maintained between participating routers, even if the physical topology changes.

Which two actions should you perform in this scenario? (Choose two.)

A. Configure DHCP on all IBGP devices.

B. Configure an IGP within your IBGP network.

C. Configure static routes to all IBGP peers.

D. Configure IBGP peerings to loopback addresses.

Which two statements about the root bridge election process are correct? (Choose two.)

A. The highest root bridge priority is preferred over lower root bridge priorities.

B. The highest root bridge identifier is preferred over lower root bridge identifiers.

C. The lowest root bridge priority is preferred over higher root bridge priorities.

D. The lowest root bridge identifier is preferred over higher root bridge identifiers.

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. persistent MAC learning

B. 802.1X

C. DHCP snooping

D. MAC limiting

Which three link-specific fields must match between OSPF neighbors before they form an adjacency over a broadcast medium? (Choose three.)

A. router priority

B. hello interval

C. neighbor

D. dead interval

E. options

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 peer AS information from the prefix.

B. Enable the advertisement of inactive BGP routes.

C. Enable the automatic removal of private AS numbers from the prefix.

D. Enable the automatic refreshing of BGP routes.

Click the Exhibit button.

You are trying to form an IS-IS adjacency between Router A and Router B, but the IS-IS adjacency will not form between the two routers.

Referring to the exhibit, which action would solve this problem?

A. Enable level 1 IS-IS routing on Router A.

B. Enable IS-IS wide metrics on Router A.

C. Enable level 2 IS-IS routing on Router B.

D. Enable IS-IS wide metrics on Router B.

You were provided a network diagram that told you to number your network from the 191.255.0.0/16 space. OSPF is enabled and adjacencies are up, but no routers are learning any routes. What can explain this?

A. The default OSPF export policies advertise nothing, so you need to apply export policy

B. The default OSPF import policy rejects all OSPF routes, so you need to apply import policy

C. You need to modify the martian table with a 191.255.0.0/16 accept statement

D. You need to enable OSPF on the lo0 interface to provide a route to the RID of each router in the network

Which statement describes BFD?

A. BFD rapidly detects link failures.

B. BFD provides route loop protection.

C. BFD provides broadcast storm protection.

D. BFD provides high availability with multiple Routing Engines.

What BGP attribute is mostly likely to influence a remote AS that you do not peer with?

A. This is not possible given the local scope of BGP

B. AS path

C. MED

D. Local preference

Click the exhibit button.

Switch-1 in the exhibit receives a packet from User A with a destination MAC address of

00:26:88:02:74:47.

Which statement in this scenario is correct?

A.

Switch-1 sends the packet out ge-0/0/7 only.

B.

Switch-1 sends the packet out ge-0/0/7 and ge-0/0/8.

C.

Switch-1 sends the packet out ge-0/0/6, ge-0/0/7, ge-0/0/8, and ge-0/0/9.

D.

Switch-1 sends the packet out ge-0/0/7, ge-0/0/8, and ge-0/0/9.

What are two functions of bridging? (Choose two.)

A. blocking

B. aging

C. listening

D. forwarding

You are configuring OSPF and want to ensure that interface ge-0/0/3 is preferred over interface ge-0/0/4.

Which statement is correct in this scenario?

A. Configure ge-0/0/3 with a higher metric.

B. Configure reference bandwidth.

C. Configure a redistribution policy.

D. Configure ge-0/0/4 with a higher metric.

Exhibit.

Referring to the exhibit, why is the route for 10.5.5.5 hidden?

A. It is an L3VPN route.

B. The next hop cannot be resolved.

C. It has an invalid community.

D. It is a Martian route.

Which two statements are true about GRE tunnels on Junos devices? (Choose two.)

A. Only one GRE tunnel can be included for each logical unit.

B. Multiple GRE tunnels can be included for each logical unit.

C. GRE interfaces can include multiple logical units.

D. GRE interfaces can include only a single logical unit.