Enterprise Routing and Switching, Specialist (JNCIS-ENT) v1.0
Question 1
You received an alert from your monitoring system that the master Routing Engine (RE) on an EX4300 switch in a virtual chassis has hardware issues and might need to be replaced. Because the switch already had graceful Routing Engine switchover (GRES) enabled and configured, you must perform a manual switchover to the backup RE to avoid disruption.
Which command would be used to perform the manual RE switchover?
- A. Log in to the backup RE and issue the restart chassis-control operation command.
- B. Log in to the master RE and issue the request chassis routing-engine master switch operation command.
- C. Log in to the master RE and issue the request chassis routing-engine master acquire operation command.
- D. Log in to the backup RE and issue the restart iccp-service operation command.
Answer : B
Question 2
Click the Exhibit button.
You are asked to change the default behavior of your trunk port (ge-0/0/1) to now pass untagged traffic.
Which configuration would accomplish this task?
- A. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members vlan.1
- B. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members native
- C. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members 1
- D. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members native_v1
Answer : C
Question 3
You are currently defining a new OSPF area. The area must advertise external routes but should not receive external routes from another area.
In this scenario, which type of area should you define?
- A. stub
- B. backbone
- C. not-so-stubby
- D. totally stubby
Answer : A
Question 4
Click the Exhibit button.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. The device will not form adjacencies with devices in a different area.
- B. The Level 2 database will be empty.
- C. The IS-IS protocol is disabled on the device.
- D. The device will not have a Level 2 database.
Answer : AB
Question 5
Which static route next-hop value indicated that the packet will be silently dropped?
- A. resolve
- B. discard
- C. reject
- D. next-table
Answer : B
Explanation:
If the static route has a discard next hop it means that if a packet does not match a more specific route, the packet is rejected and a reject route for this destination is installed in the routing table, but Internet Control Message Protocol (ICMP) unreachable messages are not sent.
Question 6
Click the Exhibit button.
You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2.
Which statement is correct about the expected behavior?
- A. Switch-3ג€™s ge-0/0/2 port role and state will transition to designated and forwarding.
- B. Switch-3ג€™s ge-0/0/2 port role and state will remain as alternate and discarding.
- C. Switch-3 will become the root bridge for the RSTP topology.
- D. Switch-3 will remove the ge-0/0/2 interface from the RSTP topology.
Answer : A
Question 7
Click the Exhibit button.
Referring to the exhibit, which statement explains why the route to 192.168.178.0/24 advertised from 192.168.35.90 is hidden?
- A. The import routing policy rejected the route.
- B. The AS path contains invalid confederation attributes.
- C. The next-hop address is a multicast address.
- D. The AS path contains a zero.
Answer : A
Question 8
Which two statements describe the BGP Local Preference attribute? (Choose two.)
- A. The attribute can be altered through a BGP configuration or using a policy.
- B. The attribute is transmitted across EBGP links.
- C. The attribute can be given a higher preference by configuring a lower numerical value.
- D. The attribute can be used to direct all outbound traffic through a specific peer.
Answer : AD
Question 9
Click the Exhibit button.
You have an existing Virtual Chassis consisting of five member devices. Member 3 fails and must be replaced. You remove the EX Series switch with a Member
ID of 3 and install a replacement switch in its place using identical cabling as shown in the exhibit. The replacementג€™s member ID is 6, so the configuration for member ID 3 is not applied to it.
Referring to the exhibit, what should have been done before installing the replacement switch?
- A. Reactivate the Virtual Chassis.
- B. Recycle the member ID of the switch being replaced.
- C. Renumber the member IDs.
- D. Clear the Virtual Chassis protocol.
Answer : B
Question 10
Click the Exhibit button.
What would cause the status of interface ge-0/0/8 as shown in the exhibit?
- A. Interface ge-0/0/8 is physically down and is not forwarding traffic.
- B. Interface ge-0/0/8 has a firewall filter in place that is blocking traffic.
- C. Interface ge-0/0/8 is administratively disabled and is not forwarding traffic.
- D. Interface ge-0/0/8 is connected to the same LAN as one of the other ports.
Answer : D
Question 11
What are three types of bridge protocol data units? (Choose three.)
- A. media endpoint discovery
- B. topology change acknowledgement
- C. topology change notification
- D. type length value
- E. configuration
Answer : BCE
Question 12
An EX Series switch receives a frame with an unknown destination MAC address.
What is the expected behavior?
- A. The frame is sent out all ports assigned to all configured VLANs except the ingress port on which the frame was received.
- B. The frame is sent out all access ports associated with the ingress VLAN regardless of whether a matching MAC address was found in the bridge table.
- C. The frame is sent out all ports assigned to the associated VLAN except the ingress port on which the frame was received.
- D. The frame is sent out all trunk ports associated with the ingress VLAN regardless of whether a matching MAC address was found in the bridge table.
Answer : C
Question 13
Click the Exhibit button.
You are establishing a BGP session between R1 and R2. R2 shows 172.24.1.1 as its peer address for R1 instead of 192.168.100.1.
Referring to the exhibit, what must be changed in the configuration?
- A. A peer-as statement must be added to R1 in the internal group.
- B. An export policy statement must be added to R1 in the internal group to allow the lo0 address to peer.
- C. A local interface statement with the lo0 address must be added to R1 in the internal group.
- D. A local address statement with the lo0 address must be added to R1 in the internal group.
Answer : D
Question 14
What is considered a requirement for passing traffic through GRE tunnels?
- A. Tunnel endpoints must have static routes pointing to the remote endpoints.
- B. You must configure the tunnel on the physical interface connecting to the remote endpoint.
- C. You must be able to reach the remote endpoint through the tunnel.
- D. Tunnel endpoints must have a route that directs traffic into the tunnel.
Answer : C
Question 15
Which two values are used to generate a bridge ID when using STP? (Choose two.)
- A. system MAC address
- B. bridge priority
- C. port identifier
- D. loopback IP address
Answer : AB