JNCIP-ENT Practice Test 10 — 10 Questions

Question 1

Which THREE parameters must be configured when implementing captive portal on an EX Series switch? (Choose three)

Accepted Answer

A captive portal profile specifying redirection URLs and authentication parameters.. Option A is correct because a captive portal profile is the core configuration object that defines the redirection URL (the web page clients are sent to), the authentication parameters, and the associated access profile used to authenticate users. Option C is correct because the captive portal service must be bound to specific interfaces or VLANs so the switch knows which ingress traffic triggers the portal interception and redirection. Option E is correct because an access profile defines the authentication server group (RADIUS/LDAP) and the authentication order that the captive portal uses to validate user credentials. Option B is incorrect because a global RADIUS accounting policy with interim-interval set to zero is not required for captive portal; accounting is optional and unrelated to portal redirection. Option D is incorrect because captive portal on EX Series switches does not require a static NAT pool to translate client IPs to the portal server IP; redirection is handled by the switch's captive portal mechanism, not NAT.

Answer

A global RADIUS accounting policy with interim-interval set to zero.

Answer

A static NAT pool for translating client IP addresses to the captive portal server IP.

Question 2

A network administrator needs to display the multicast routing table entries, including incoming interfaces and outgoing interface lists (OIL), on a Junos device. Which operational command should be used?

Accepted Answer

show multicast route. The 'show multicast route' command displays the Multicast Forwarding Information Base (MFIB) entries, including source, group, incoming interface, and outgoing interfaces.

Answer

show ospf route

Answer

show igmp interface

Answer

show pim join

Question 3

Which Junos configuration command enables MD5 cryptographic authentication on an OSPFv2 interface?

Accepted Answer

set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 authentication md5 1 key "secret". MD5 authentication for OSPFv2 in Junos is configured under the interface hierarchy with the 'authentication md5' statement followed by a key ID and password.

Answer

set security ospf md5 interface ge-0/0/0.0 key "secret"

Answer

set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 md5-password "secret"

Answer

set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 authentication-type md5

Question 4

You are configuring Ethernet switching on an EX4300 switch and need to implement storm control to prevent broadcast, multicast, and unknown unicast traffic from overwhelming access links. Where is storm-control applied in the Junos configuration hierarchy?

Accepted Answer

set interfaces ge-0/0/1 unit 0 family ethernet-switching storm-control. Storm control is applied under 'interfaces <interface-name> unit 0 family ethernet-switching storm-control'.

Answer

set vlans default storm-control

Answer

set protocols l2-learning storm-control interface ge-0/0/1

Answer

set forwarding-options storm-control interface ge-0/0/1

Question 5

You want to map three loss priorities (low, medium-low, high) to different drop profiles within a specific forwarding class. Which statement should you use inside the scheduler configuration?

Accepted Answer

drop-profile-map. In Junos scheduler configurations, drop-profile-map associates a loss priority and forwarding class with a specific drop profile.

Answer

classifier-map

Answer

loss-priority-mapping

Answer

queue-drop-profile

Question 6

You are troubleshooting an IP phone that is failing to discover its voice VLAN via LLDP-MED on an EX4600 switch. You issue the show lldp interface command and see that LLDP is transmitting properly, but the phone reports no voice VLAN TLV received. What is the most likely cause of this issue?

Accepted Answer

The LLDP-MED network policy for voice has not been defined and mapped to the interface or device profile.. LLDP-MED network policy must be explicitly configured and tied to the interface or globally mapped so that the switch populates the voice VLAN TLV in its outbound LLDP-MED packets.

Answer

The voice VLAN is not configured under the switch-options vlan-group hierarchy.

Answer

IEEE 802.1p priority marking is missing from the global bridge-options statement.

Answer

LLDP advertisement interval is set too high, causing timeout on the phone.

Question 7

When configuring a hierarchical scheduler map on an MX Series router, what is the primary purpose of the aggregate level shaping?

Accepted Answer

To limit the total traffic across all queues associated with the scheduler map. Aggregate level shaping controls the total bandwidth allocated to a group of queues or sub-interfaces, ensuring overall traffic limits are respected.

Answer

To dynamically assign forwarding classes based on IP headers

Answer

To ensure absolute priority for best-effort traffic

Answer

To rewrite CoS bits on egress frames

Question 8

An enterprise network uses multiple routing instances with PIM sparse-mode. An engineer needs to configure Inter-AS multicast routing using MSDP. Which component is required to establish MSDP peering across different autonomous systems where BGP is also running?

Accepted Answer

Matching MSDP peer loopback addresses and TCP session establishment with MBGP routing. MSDP peers can be configured between BGP speakers in different ASs. The MSDP peer address often matches the BGP router ID or loopback, and MBGP supplies the RPF route for the source.

Answer

A shared PIM dense-mode tunnel between the AS border routers

Answer

IGMPv2 proxy configuration on the border routers

Answer

Static multicast routes for all 224.0.0.0/4 destinations

Question 9

An engineer needs to verify which multicast groups have active receivers joined on an interface using IGMP. Which operational command should be used?

Accepted Answer

show igmp group. The 'show igmp group' command lists the multicast groups joined on interfaces via IGMP.

Answer

show multicast heap

Answer

show msdp SA-cache

Answer

show pim rp statistics

Question 10

A network administrator needs to verify the PoE status, power draw, and allocated class for all connected IP phones across all interfaces on an EX2300 switch. Which operational command should be used?

Accepted Answer

show poe interface. The command show poe interface provides detailed information about PoE status, power consumption, class, and priority on EX switches.

Answer

show ethernet-switching poe status

Answer

show lldp med interface

Answer

show chassis power detail