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JN0-349 Enterprise Routing and Switching - Specialist (JNCIS-ENT) Question and Answers

Enterprise Routing and Switching - Specialist (JNCIS-ENT)

Last Update 14 hours ago
Total Questions : 110

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Question # 1

You have an IBGP neighbor sending you routes. You need to apply a policy so it only evaluates routes being learned from this specific neighbor.

In this scenario, which statement is correct about applying the policy?

Options:

A.  

The policy should be applied as an export policy to the BGP group level.

B.  

The policy should be applied as an import policy to the BGP group level.

C.  

The policy should be applied as an export policy to the BGP neighbor level.

D.  

The policy should be applied as an import policy to the BGP neighbor level.

Discussion 0
Question # 2

Routet-1 and Router-2 must connect through the Internet using a tunneling technology. Hosts that are connected to Router-1 and Router-2 will be sending traffic up to 1500 bytes. The maximum segment size that is supported across the path is 1520 bytes.

Which tunneling technology will allow this communication to take place?

Options:

A.  

IP-IP tunnel

B.  

GRE tunnel

C.  

IPsec VPN tunnel mode

D.  

IPsec VPN transport mode

Discussion 0
Question # 3

What is the default route preference for BGP?

Options:

A.  

150

B.  

167

C.  

170

D.  

179

Discussion 0
Question # 4

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

Options:

A.  

router priority

B.  

hello interval

C.  

neighbor

D.  

dead interval

E.  

options

Discussion 0
Question # 5

What are two Layer 2 firewall filter types? (Choose two.)

Options:

A.  

port-based

B.  

packet-based

C.  

flow-based

D.  

VLAN-based

Discussion 0
Question # 6

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

Options:

A.  

This is not possible given the local scope of BGP

B.  

AS path

C.  

MED

D.  

Local preference

Discussion 0
Question # 7

Which statement is true about IP-IP tunnels?

Options:

A.  

The time-to-live value of the original packet Is decremented.

B.  

IP-IP tunnels are protocol agnostic.

C.  

The packet is encapsulated unchanged before entering the tunnel

D.  

The packet header is replaced before entering the tunnel

Discussion 0
Question # 8

Click the Exhibit button.

Question # 8

You are building a network and make some configuration changes. While trying to validate these changes, you receive the error shown in the exhibit.

How would you solve this problem?

Options:

A.  

You must create a new VLAN called all using the VLAN ID of 30.

B.  

You must configure the ge-0/0/5.0 interface with family inet instead of family ethernet-switching.

C.  

You must configure the port mode as trunk on the ge-0/0/5.0 interface.

D.  

You must create two sub-interfaces on ge-0/0/5 with the appropriate VLAN member assigned to each.

Discussion 0
Question # 9

Click the Exhibit button.

Question # 9

You are responsible for managing a Layer 2 network using RSTP for loop prevention. You recently committed the configurations shown in the exhibit. Unfortunately, Switch-2 became the root bridge and you must ensure that Switch-1 becomes the root bridge, when available, for this RSTP topology.

Referring to the exhibit, which configuration change should be performed?

Options:

A.  

Configure the ge-0/0/1 and ge-0/0/8 interfaces on Switch-1 to have a priority of 255.

B.  

Configure the system MAC on Switch-1 to be higher than the other two switches.

C.  

Configure the bridge-priority on Switch-1 as 4k.

D.  

Configure the ge-0/0/1 and ge-0/0/8 interfaces on Switch-1 to have a cost of 0.

Discussion 0
Question # 10

On EX Series devices, what are two software features that accommodate redundancy? (Choose two.)

Options:

A.  

OAM

B.  

NSR

C.  

IGMP

D.  

GRES

Discussion 0
Question # 11

Click the Exhibit button.

Question # 11

A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.

Referring to the exhibit, which route would be selected?

Options:

A.  

route B

B.  

route D

C.  

route A

D.  

route C

Discussion 0
Question # 12

What are three reasons a router would send out an IS-IS link-state PDU? (Choose three.)

Options:

A.  

A new external route is imported from BGP.

B.  

The router’s link to a neighbor goes down.

C.  

A new neighbor exists on the link.

D.  

The cost of a link to an existing neighbor has changed.

E.  

IS-IS sends link-state PDUs at random intervals.

Discussion 0
Question # 13

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?

Options:

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

Discussion 0
Question # 14

By default, how long will a learned MAC address be retained in the bridge table on an EX Series switch?

Options:

A.  

600 seconds

B.  

3600 seconds

C.  

300 seconds

D.  

1800 seconds

Discussion 0
Question # 15

You have a VLAN with two devices acting as a single gateway for hosts.

In this scenario, which protocol would provide a single gateway IP for the hosts?

Options:

A.  

VRRP

B.  

OSPF

C.  

IS-IS

D.  

BGP

Discussion 0
Question # 16

Which statement describes GRES?

Options:

A.  

GRES requires NSR to function properly.

B.  

GRES provides routing loop protection.

C.  

GRES provides hardware-level high availability.

D.  

GRES rapidly detects link failures.

Discussion 0