What is the typical configuration of an access port on a Juniper switch?

It is assigned to a single VLAN

It is used for out-of-band management

It is used to connect two switches together

It is configured to carry multiple VLANs with tags

A switch receives a frame with destination MAC address 01:00:5E:00:00:01. What action does the switch take?

It sends the frame to the router for multicast routing.

It floods the frame out all ports in the same VLAN, except the ingress port.

It drops the frame because the destination is not a unicast address.

It forwards the frame only to the port associated with that MAC address in the table.

An administrator has configured link aggregation between two switches using LACP. The aggregated link is up, but traffic is not being load-balanced evenly. What is a likely cause?

The load-balancing algorithm uses source and destination MAC addresses, and most traffic is between a few hosts.

LACP is not supported on the switches.

The switch is using STP to block one of the links.

The links are in different VLANs.

A frame is received on a trunk port with an 802.1Q tag for VLAN 20. The switch does not have VLAN 20 configured. What happens to the frame?

The frame is forwarded untagged on all access ports.

The frame is forwarded on the native VLAN.

The frame is flooded out all trunk ports.

Juniper NetworksCertified Associate, Data Center

Domain 2Objective 1

Ethernet Switching and Bridging Concepts JN0-281 Practice Questions (Page 6)

Part of the Layer 2 Switching and VLANs domain, which makes up ~21% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–13 in this domain), expect 1–2 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

8concepts

Questions 26–29

26foundation · easy
What is the typical configuration of an access port on a Juniper switch?
Select an answer first
27application · medium
A switch receives a frame with destination MAC address 01:00:5E:00:00:01. What action does the switch take?
Select an answer first
28expert · hard
An administrator has configured link aggregation between two switches using LACP. The aggregated link is up, but traffic is not being load-balanced evenly. What is a likely cause?
Select an answer first
29application · medium
A frame is received on a trunk port with an 802.1Q tag for VLAN 20. The switch does not have VLAN 20 configured. What happens to the frame?
Select an answer first

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