[Sep-2021] JN0-348 Pre-Exam Practice Tests | Exam Questions and Answers for JNCIS-ENT Study Guide
Enterprise Routing and Switching, Specialist (JNCIS-ENT) Certification Sample Questions
NEW QUESTION 47
What are three components that populate the Ethernet switching table? (Choose three.)
- A. the MAC address of the source node
- B. the MAC address of the destination node
- C. the interface on which the traffic was received
- D. the time the address was learned
- E. the link state
Answer: A,C,D
NEW QUESTION 48
When electing a DIS in an IS-IS network, what is used to break a priority tie?
- A. highest router ID
- B. lowest MAC address
- C. lowest router ID
- D. highest MAC address
Answer: D
NEW QUESTION 49
Click the Exhibit button.
The configuration shown in the exhibit was committed on an EX Series switch. You are notified that the phone using the voice VLAN does not work. You determine that voice traffic is not passing through the local switch.
What should be done to solve the problem?
- A. You should change the voice VLAN ID to match the data VLAN ID.
- B. You should add the voice VLAN as a member on the ge-0/0/8.0 interface.
- C. You should add the voice VLAN as a member on the ge-0/0/9.0 interface.
- D. You should change the port mode on ge-0/0/9.0 to trunk.
Answer: B
NEW QUESTION 50
You must implement filter-based forwarding. You need to direct traffic from 192.168.1.0/24 through vr1 and traffic from 10.210.0.128/26 through vr2.
Which configuration is correct in this scenario?
- A. firewall {
family inet {
filter fbf-filter1 {
term match-192-subnet {
from {
source-address {
192.168.0.0/24;
}
}
then {
routing-instance vr1;
}
}
term match-10-subnet {
from {
source-address {
10.210.0.128/27;
}
}
then {
routing-instance vr2;
}
}
}
}
} - B. firewall {
family inet {
filter fbf-filter1 {
term match-192-subnet {
from {
source-address {
192.168.2.0/26;
}
}
then {
routing-instance vr2;
}
}
term match-10-subnet {
from {
source-address {
10.210.1.128/26;
}
}
then {
routing-instance vr1;
}
}
}
}
} - C. firewall {
family inet {
filter fbf-filter1 {
term match-192-subnet {
from {
source-address {
192.168.1.0/24;
}
}
then {
routing-instance vr1;
}
}
term match-10-subnet {
from {
source-address {
10.210.0.128/26;
}
}
then {
routing-instance vr2;
}
}
}
}
} - D. firewall {
family inet {
filter fbf-filter1 {
term match-192-subnet {
from {
source-address {
192.168.1.0/26;
}
}
then {
routing-instance vr2;
}
}
term match-10-subnet {
from {
source-address {
10.210.0.128/26;
}
}
then {
routing-instance vr1;
}
}
}
}
}
Answer: C
NEW QUESTION 51
Based on the output shown in the exhibit, which statement is correct?
- A. The ge-0/0/9 interface is using the default interface priority value.
- B. This switch has a bridge priority of 8k.
- C. This switch is currently blocking all traffic.
- D. The ge-0/0/15 interface is using the default port cost.
Answer: B
NEW QUESTION 52
Which two sequences correctly describe the processing order of firewall filters on an EX Series switch?
(Choose two.)
- A. port filter > VLAN filter > router filter > transmit packet
- B. receive packet > port filter > VLAN filter > router filter
- C. router filter > VLAN filter > port filter > transmit packet
- D. receive packet > router filter > VLAN filter > port filter
Answer: B,C
NEW QUESTION 53
Exhibit.
Referring to the exhibit, the local router should have an IS-IS adjacency with a neighboring router, but the adjacency never establishes correctly.
What should you do to solve the problem?
- A. Disable wide metrics.
- B. Change the local IS-IS area ID to 49.0002.
- C. Disable level 2 for the interfaces.
- D. Disable level 1 for the interfaces.
Answer: D
NEW QUESTION 54
You are a service provider and have multiple customers in a building.
You are installing a new switch that can host all of your customers. However, you would like to ensure that one customer cannot see or broadcast to another customer.
You would also like to have them use a common gateway IP address from the building.
What should be used to provide this access?
- A. VLAN
- B. private VLAN
- C. Layer 2 tunneling
- D. filter-based VLAN
Answer: B
NEW QUESTION 55
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 is correct in this scenario?
- A. Switch-1 sends the packet out ge-0/0/7 only.
- B. Switch-1 floods the packet out ge-0/0/7 and ge-0/0/8.
- C. Switch-1 floods the packet out ge-0/0/6, ge-0/0/7, ge-0/0/8, and ge-0/0/9.
- D. Switch-1 floods the packet out ge-0/0/7, ge-0/0/8, and ge-0/0/9.
Answer: D
NEW QUESTION 56
What are the three possible port states when using RSTP? (Choose three.)
- A. learning
- B. discarding
- C. tagging
- D. listening
- E. forwarding
Answer: A,B,E
NEW QUESTION 57
Which area is reserved for the OSPF backbone?
- A. Area 1.1.1.1
- B. Area .3.3.3.3
- C. Area 0.0.0.0
- D. Area 2.2.2.2
Answer: C
NEW QUESTION 58
Click the Exhibit button.
Your router is configured to peer with your ISP's router using BGP. You can only control your BGP configuration.
Which address families are negotiated between the two BGP peers shown in the exhibit?
- A. inet-unicast inet-vpn-unicast 12vpn-signaling
- B. inet-vpn-unicast
- C. inet-unicast
- D. inet-unicast inet-vpn-unicast 12vpn
Answer: C
NEW QUESTION 59
Exhibit.
***Exhibit is Missing***
Your router is configured to peer with your ISP's router using BGP. You can only control your BGP configuration Which address families are negotiated between the two BGP peers shown in the exhibit?
- A. inet-unicast inet-vpn-unicast 12vpn-signaling
- B. inet-unicast inet-vpn-unicast 12 vpn
- C. inet-vpn-unisact
- D. inet-unicast
Answer: A
NEW QUESTION 60
You have deployed a Juniper EX Series switch in the network. The switch receives a broadcast frame on an interface.
Which statement describes the behavior of the switch?
- A. The frame is flooded out all ports that are part of the same VLAN as the receiving port, except for the port on which the frame was received.
- B. The frame is flooded out all ports in all VLANs configured on the switch.
- C. The frame is re-transmitted as a multicast frame on all ports on the switch.
- D. The frame is flooded out all ports that are part of the same VLAN as the receiving port, including the port on which the frame was received.
Answer: A
NEW QUESTION 61
Exhibit.
You manage the layer 2 network shown in the exhibit, You experience a failure on the ge-0/0/0 link between Swicth-1 and Switch-2.
Which statement is correct about expected behavior?
- A. Switch-2 will remove itself from the RSTP topology.
- B. Switch-2 will become the root bridge for a separate RSTP topology.
- C. Switch-2's ge0/0/2 port role and state will remain as designated and forwarding.
- D. Swicth-2's ge0/0/2 port role and state will transition to root and forwarding.
Answer: C
NEW QUESTION 62
What information is included in the DHCP snooping database? (Choose two.)
- A. client MAC address
- B. VLAN
- C. DHCP server address
- D. DHCP options
Answer: A,B
NEW QUESTION 63
Click the Exhibit button. Given the configuration shown in the exhibit, what will be the threshold for storm control?
- A. 100 Mbps (megabits per second)
- B. 100 pps (packets per second)
- C. 100% (percent of link bandwidth)
- D. 100 Kbps (kilobits per second)
Answer: D
Explanation:
This example shows how to configure the storm control level on interface ge-0/0/0 by setting the level to a traffic rate of 15,000 Kbps, based on the traffic rate of the combined applicable traffic streams. To configure storm control: Specify the traffic rate in Kbps of the combined traffic streams on a specific interface:
[edit ethernet-switching-options]
user@switch# set storm-control interface ge-0/0/0 bandwidth 15000
https://www.juniper.net/techpubs/en_US/junos12.3/topics/example/rate-limiting-storm-control- configuring .html#X7AlwRyc817gtLBC.99
NEW QUESTION 64
Exhibit.
In the exhibit, each IP subnet in the network is associated with a unique VLAN ID Which action wilt ensure that Host C will communicate with host A and Host B?
- A. Configure all switch ports connecting to the host devices as trunk ports associated with all VLANS.
- B. Configure a port-based ACL that permits inter-VLAN routing for all configured VLANs.
- C. Configure all switch ports connecting to the host devices as access ports associated with a common VLAN.
- D. Configure an IRB interface for each VLAN and associate it with its corresponding VLAN
Answer: D
NEW QUESTION 65
Click the Exhibit button. Based on the traceoptions output shown in the exhibit, what is the problem wit h the adjacency?
- A. MTU mismatch
- B. connectivity
- C. area mismatch
- D. authentication mismatch
Answer: C
Explanation:
From the exhibit we see: OSPF packet ignored: area mismatch
NEW QUESTION 66
Which two statements are true about DIS elections in IS-IS? (Choose two.)
- A. If a priority tie occurs, the router with the lower subnetwork point of attachment (SNPA) value becomes the DIS.
- B. If a priority tie occurs, the router with the higher subnetwork point of attachment (SNPA) value becomes the DIS.
- C. The router with the lower priority value becomes the DIS.
- D. The router with the higher priority value becomes the DIS.
Answer: B,D
Explanation:
In IS-IS, deterministic DIS election makes the possibility of predicting the router that will be elected as DIS from the same set of routers.
The router advertising the numerically highest priority wins, with numerically highest MAC address, also called a Subnetwork Point of Attachment (SNPA), breaking the tie.
https://kb.juniper.net/kb/documents/public/junos/StudyGuides/Ch4_from_JNCIP_studyguide.pdf
NEW QUESTION 67
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