Enterprise Routing and Switching, Specialist (JNCIS-ENT) v1.0
Question 1
Which two statements about Layer 2 loop prevention protocols are correct? (Choose two.)
- A. With STP, a designated port can transition to the forwarding state without waiting for the protocol times to expire.
- B. STP uses point-to-point and edge port designations.
- C. With RSTP, a designated port can transition to the forwarding state without waiting for the protocol times to expire.
- D. RSTP uses point-to-point and edge port designations.
Answer : CD
Question 2
Which protocol supports tunneling of non-IP traffic?
- A. GRE
- B. SSH
- C. IPsec
- D. IP-IP
Answer : D
Question 3
Click the Exhibit button.
You are attempting to set up IS-IS on a device that has two interfaces (ge-0/0/1.0 and ge-0/0/2.0) in Level 1 and one interface (ge-0/0/0.0) in Level 2; however, it does not participate in either level.
Referring to the exhibit, what is the problem?
- A. The ge-0/0/0.0 interface must have the Level 1 disable statement removed.
-
B.
The lo0 interface must participate in both levels.
С. One of the interfaces requires a network entity title on it. - D. All of the interfaces must have the level disable statement removed.
Answer : C
Question 4
Click the Exhibit button.
Referring to the exhibit, which router will be selected as the DR?
- A. R1
- B. R5
- C. R4
- D. R3
Answer : D
Question 5
Click the Exhibit button.
Referring to the exhibit, which three statements are correct? (Choose three.)
- A. R1 and R3 can form a Layer 2 IS-IS adjacency.
- B. R2 and R4 can form a Layer 1 IS-IS adjacency.
- C. R3 and R4 can form a Layer 2 IS-IS adjacency.
- D. R1 and R3 can form a Layer 1 IS-IS adjacency.
- E. R3 and R4 can form a Layer 1 IS-IS adjacency.
Answer : ACD
Question 6
You are asked to configure filter-based forwarding (FBF) to forward traffic sourced from a specific subnet to a webserver.
In this scenario, which mechanism is used to add interface routes to the forwarding routing instance used in FBF?
- A. generated routes
- B. RIB groups
- C. forwarding policy
- D. routing policy
Answer : B
Question 7
Click the Exhibit button.
Referring to the exhibit, which port will be selected as the RSTP root port on Switch-4?
- A. ge-0/0/13.0
- B. ge-0/0/8.0
- C. ge-0/0/9.0
- D. ge-0/0/12.0
Answer : D
Question 8
Which two statements about a Virtual Chassis are correct? (Choose two.)
- A. A Virtual Chassis is managed using a single virtual console port.
- B. You must use the same EX Series switch for all members in a Virtual Chassis.
- C. All members in a Virtual Chassis must be running the same Junos version.
- D. Each device must be managed separately.
Answer : AC
Question 9
Click the Exhibit button.
Referring to the exhibit, which type of route is displayed?
- A. martian
- B. static
- C. generate
- D. aggregate
Answer : C
Question 10
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.
Answer : A
Question 11
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 database flushing
- C. to transfer the LSUs between two systems
- D. to determine who is in charge of adjacency formation
Answer : A
Question 12
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.
Answer : B
Question 13
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.
Answer : BC
Question 14
Which two port security mechanisms rely on an accurate DHCP snooping database to operate correctly? (Choose two.)
- A. IP source guard
- B. persistent MAC learning
- C. MACsec
- D. dynamic ARP inspection
Answer : AD
Question 15
Click the Exhibit Button.
Referring to the exhibit, which two statements about the BGP connection are correct? (Choose two.)
- A. The local device has AS 100 configured but the peer is expecting AS 101.
- B. This is an EBGP peering session.
- C. This is an IBGP peering session.
- D. The local device has AS 101 configured but the peer is expecting AS 100.
Answer : BD