What is a common symptom of a duplex mismatch on a switch interface?

The interface is administratively down

High number of CRC errors and late collisions on the interface

A switch port is configured with port security to allow only one MAC address. A user connects a new device to the port, and the port is now disabled. What is the most likely reason?

The port security violation action is set to 'shutdown'.

The new device has the same MAC address as the original.

The port is configured as a trunk port.

What is the purpose of 802.1Q tagging on a trunk port?

To encrypt the traffic on the trunk link

To prioritize traffic based on QoS

To prevent loops in the network

To identify which VLAN a frame belongs to

What is the purpose of storm control on a switch interface?

To encrypt traffic on the interface

To increase the bandwidth of the interface

To prevent unauthorized access to the interface

To limit the amount of broadcast, multicast, or unknown unicast traffic on the interface

What is the purpose of Link Aggregation Control Protocol (LACP)?

To prioritize traffic based on QoS

To provide redundancy and increase bandwidth by combining multiple physical links into a single logical link

To prevent loops by blocking redundant links

To encrypt traffic between switches

Juniper NetworksCertified Specialist, Enterprise Routing and Switching (JNCIS-ENT)

Domain 1Objective 7

Configure, Monitor, or Troubleshoot Layer 2 Interfaces and Ports JN0-352 Practice Questions (Page 2)

Part of the Layer 2 Switching and VLANs domain, which makes up ~15% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–9 in this domain), expect 1–1 from this objective — we provide 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

8concepts

Questions 6–10

6foundation · easy
What is a common symptom of a duplex mismatch on a switch interface?
Select an answer first
7application · medium
A switch port is configured with port security to allow only one MAC address. A user connects a new device to the port, and the port is now disabled. What is the most likely reason?
Select an answer first
8foundation · easy
What is the purpose of 802.1Q tagging on a trunk port?
Select an answer first
9foundation · easy
What is the purpose of storm control on a switch interface?
Select an answer first
10foundation · easy
What is the purpose of Link Aggregation Control Protocol (LACP)?
Select an answer first

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