JN0-349 Online Training Archives

To help you pass your JN0-349 Enterprise Routing and Switching, Specialist (JNCIS-ENT) exam, you can prepare your Juniper JN0-349 Exam with less effort. You would have basic and advanced understanding about all the concepts of Juniper JN0-349 Exam Certification. These Juniper JN0-349 Enterprise Routing and Switching, Specialist (JNCIS-ENT) Online Training are designed for your convenience and you can rely on them without any hesitation. With the help of Exam4Training Juniper JN0-349 Enterprise Routing and Switching, Specialist (JNCIS-ENT) Online Training for the preparation of JNCIS-ENT JN0-349 Exam, you would be able to pass this exam in first attempt with maximum grades.

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1. What are two benefits of 802.3ad link aggregation? (Choose two.)

It increases bandwidth.

It ensures symmetrical paths.

It simplifies interface configuration.

It creates physical layer redundancy.

2. Which statement is true about IP-IP tunnels?

Intermediate devices must have a route to the destination address of the traffic being tunneled.

Intermediate devices must have a route to both the tunnel source address and the tunnel destination address.

Intermediate devices must have a route to the tunnel destination address but do not require a route to the tunnel source address.

Intermediate devices must have a route to the tunnel source address but do not require a route to the tunnel destination address.

3. You have a conference room with an open network port that is used by employees to connect to the network. You are concerned about rogue switches being connected to this port.

Which two features should you enable on your switch to limit access to this port? (Choose two.)

DHCP snooping

dynamic ARP inspection

MAC limiting

802.1X

4. Which statement is correct about IS-IS link state PDUs?

They are used to maintain link-state database synchronization.

They are used to establish adjacencies.

They are used to build the link-state database.

They are used to determine whether the neighbors are Level 1 or Level 2.

5. Which Junos feature allows you to combine multiple interfaces into a single bundle?

VRRP

Virtual Chassis

LAG

NSB

6. Which protocol prevents loops and calculates the best path through a switched network that contains redundant paths?

VRRP

STP

DHCP

IS-IS

7. Which two characteristics are true for EBGP peerings? (Choose two.)

EBGP peers must be directly connected.

EBGP connects peer devices in the same autonomous system.

EBGP connects peer devices in two different autonomous systems.

EBGP peers can be connected over a multihop connection.

8. What are two advantages of a point-to-point OSPF adjacency? (Choose two.)

Only a DR is elected.

No type 1 LSAs are generated.

No type 2 LSAs are generated.

There is quicker neighbor establishment.

9. Which two port security features use the DHCP snooping database for additional port security? (Choose two.)

dynamic ARP inspection

MACsec

IP Source Guard

MAC learning

10. You want to configure Layer 2 services over an IP-based tunneling mechanism between two sites.

Which configuration statement is required to accomplish this task?

set interfaces gr-0/0/0.0 family bridge

set interfaces ip-0/0/0.0 encapsulation vlan-bridge

set interfaces gr-0/0/0.0 encapsulation vlan-bridge

set interfaces ip-0/0/0.0 family bridge

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11. Which two routes belong to the 172.16.0.0/22 aggregate route? (Choose two.)

172.16.4.0/24

172.16.0.0/24

172.16.5.0/24

172.16.3.0/24

12. Which two statements are correct regarding the root bridge election process when using STP? (Choose two.)

A lower system MAC address is preferred.

A higher bridge priority is preferred.

A lower bridge priority is preferred.

A higher system MAC address is preferred.

13. What are two reasons for configuring more than one VLAN on a switch? (Choose two.)

A group of clients requires that security be applied to traffic entering or exiting the group’s devices.

A group of devices must forward traffic across a WA

A group of devices are connected to the same Layer 3 network.

A group of clients requires that the group’s devices receive less broadcast traffic than they are currently receiving.

14. Referring to the exhibit, which configuration will force traffic to always use ae0.0 as long as it is active?

Option A

Option B

Option C

Option D

15. What are two characteristics of OSPF ABRs? (Choose two.)

ABRs transmit routing information between the backbone and other areas.

ABRs cannot be part of the backbone and another area at the same time.

ABRs inject routing information from outside the OSPF domain.

ABRs link two OSPF areas.

16. Which statement is correct about trunk ports?

Trunk ports must have an IRB assigned to accept VLAN tagged traffic.

By default, trunk ports accept only VLAN tagged traffic.

By default, a trunk port can have only a single VLAN assigned.

trunk ports must have an IRB assigned to accept untagged traffic.

17. Your network is configured with dynamic ARP inspection (DAI) using the default parameters for all the DHCP and ARP related configurations. You just added a new device connected to a trunk port and configured it to obtain an IP address using DHCP.

Which two statements are correct in this scenario? (Choose two.)

The DHCP server assigns the IP addressing information to the new device.

DAI validates the ARP packets for the new device against the DHCP snooping database.

The ARP request and response packets for the new device will bypass DA

DHCP snooping adds the DHCP assigned IP address for the new device to its database.

18. Which two requirements must be satisfied before graceful restart will work? (Choose two.)

a stable network topology

a neighbor configured with BFD

a neighbor configured with graceful restart

a neighbor with an uptime greater than an hour

19. You configured a GRE tunnel that traverses a path using default MTU settings. You want to ensure that packets are not dropped of fragmented.

In this scenario, what is the maximum packet size that would traverse the GRE tunnel?

1500

1400

1524

1476

20. You have configured the router with an IS-IS interface metric of 2048.

However, the IS-IS interface metric of 63 is being applied for the interface of this router.

What must you do to enable the larger metric value?

Enable wide metrics.

Disable narrow metrics.

Restart the IS-IS protocol.

Enable level 1 IS-IS routing.

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21. When configuring firewall filters, which function does the interface-specificparameter enable on an EX Series switch?

The interface-specific parameter is required to configure port-specific counters.

The interface-specific parameter is required to configure VLAN-specific counters.

The interface-specific parameter is required to configure VLAN-based filters.

The interface-specific parameter is required to configure port-based firewall filters.

22. Which two statements describe BGP attributes? (Choose two.)

BGP attributes help determine the best path to a destination.

The origin attribute indicates the autonomous systems through which the route has traversed.

BGP attributes are always optional.

The AS path attribute indicates the autonomous systems through which the route has traversed.

23. Which two OSPF header fields must match to form an adjacency over a broadcast connection? (Choose two.)

router priority

options

hello interval

neighbor

24. You want to advertise only a default route into a new area, which will be called area 7.

In this scenario, which configuration statement would solve this problem?

[email protected]# set protocols ospf area 0.0.0.7 nssa default-lsa default-metric10

[email protected]# set protocols ospf area 0.0.0.7 stub no-summaries

[email protected]# set protocols ospf area 0.0.0.7 stub default-metric 10

[email protected]# set protocols ospf area 0.0.0.7 stub

25. Which static route next-hop value indicates that the packet will be silently dropped?

resolve

discard

reject

next-table

26. Which area is reserved for the OSPF backbone?

Area 0.0.0.0

Area 1.1.1.1

Area 2.2.2.2

Area 3.3.3.3

27. You want to configure your Junos device so that routing information from certain prefixes on a neighboring router are ignored.

What should you configure on your device?

It interface

firewall rule

martian address

vt interface

28. Which three mechanisms are associated with the bridging process? (Choose three.)

blocking

flooding

aging

filtering

listening

29. Your network connections to the Internet through two different ISPs using EBGP. You must ensure that ISP1 is the primary path used for all traffic entering your network while using ISP2 as a backup path.

In this scenario, which statement is correct?

You should use a lower MED value on routes sent to ISP1.

You should assign a higher local preference on routes that you are sending to ISP1.

You should change the next hop for all routers sent to ISP2.

You should prepend your local AS number three times on routes that you are sending to ISP2.

30. Which two situations would cause dynamic ARP inspection to drop traffic? (Choose two.)

if no IP-to-MAC address entry exists in the DHCP snooping database

if the IP address in the ARP packet is deemed invalid

if the requested MAC address exceeds the configured limit on the port

if the ARP packet comes from a port that has been configured as trusted