A network engineer is planning an IPv6 deployment and needs to assign addresses to hosts. Which address type is suitable for hosts that need to communicate only within the local link and should not be routed?

Global unicast address (2000::/3)

Unique local address (fc00::/7)

A network administrator is reviewing the IPv6 configuration of a host. The host has the address 2001:db8::1/64. Which statement about this address is true?

It is a documentation address that should not be used for production traffic

It is a multicast address used for neighbor discovery

It is a global unicast address that can be routed on the public internet

It is a link-local address used only on the local segment

A network administrator is configuring a new switch and needs to ensure that frames destined for an unknown MAC address are handled correctly. What will the switch do with a frame whose destination MAC is not in its MAC address table?

Flood the frame out all ports except the ingress port

Send an ARP request to resolve the MAC address

Send the frame to the default gateway

A network engineer is troubleshooting intermittent connectivity between two hosts on the same VLAN. The ARP cache on Host A shows an incomplete entry for Host B. What is the most likely cause?

Host A has the wrong subnet mask configured

Host B has a different MAC address than expected

Host B is powered off or disconnected from the network

The switch is blocking multicast traffic

A network administrator is troubleshooting why a host cannot communicate with another host on the same subnet. The host's ARP cache is empty. What is the first step the host will take to communicate?

Send a Neighbor Solicitation message to the destination

Send an ARP request broadcast to resolve the destination's MAC address

Send the frame to the default gateway's MAC address

Send an ICMP echo request to the destination's IP address

Juniper NetworksCertified Associate, Junos

Domain 1Objective 4

Layer 2 and Layer 3 Addressing JN0-105 Practice Questions (Page 1)

Part of the Networking Fundamentals domain, which makes up ~24% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–14 in this domain), expect 1–1 from this objective — we provide 21 practice questions to prepare you well beyond it. (estimate)

21questions here

5free pages

3concepts

Questions 1–5

1application · easy
A network engineer is planning an IPv6 deployment and needs to assign addresses to hosts. Which address type is suitable for hosts that need to communicate only within the local link and should not be routed?
Select an answer first
2application · easy
A network administrator is reviewing the IPv6 configuration of a host. The host has the address 2001:db8::1/64. Which statement about this address is true?
Select an answer first
3application · medium
A network administrator is configuring a new switch and needs to ensure that frames destined for an unknown MAC address are handled correctly. What will the switch do with a frame whose destination MAC is not in its MAC address table?
Select an answer first
4application · medium
A network engineer is troubleshooting intermittent connectivity between two hosts on the same VLAN. The ARP cache on Host A shows an incomplete entry for Host B. What is the most likely cause?
Select an answer first
5application · easy
A network administrator is troubleshooting why a host cannot communicate with another host on the same subnet. The host's ARP cache is empty. What is the first step the host will take to communicate?
Select an answer first

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