A network administrator is configuring a Junos switch as a DHCP relay. The DHCP server is at 10.0.0.10. The relay must forward requests from clients on VLAN 10 (interface irb.10) and VLAN 20 (interface irb.20). What is the correct configuration to achieve this?

Create a single relay group with both irb.10 and irb.20 as interfaces and set the active server group to 10.0.0.10.

Create two separate relay groups, one for each interface, each with its own server group.

Enable DHCP relay globally and rely on the switch to automatically forward all DHCP broadcasts to the server.

Configure the DHCP server address on each interface using the 'set interfaces irb.10 dhcp-relay server 10.0.0.10' command.

A Junos switch is configured as a DHCP relay. Clients on subnet 192.0.2.0/24 are able to get addresses, but clients on subnet 198.51.100.0/24 are not. Both subnets are directly connected to the switch. The relay configuration has a single group with both interfaces. What is the most likely cause of the failure for the 198.51.100.0/24 clients?

The DHCP server does not have a pool defined for the 198.51.100.0/24 subnet.

The relay agent is not configured to listen on the interface for the 198.51.100.0/24 subnet.

The clients on the 198.51.100.0/24 subnet are sending DHCPDISCOVER messages with the broadcast flag cleared.

The switch does not have a route to the DHCP server from the 198.51.100.0/24 subnet.

You are deploying DHCP snooping on a Junos switch that also acts as a DHCP relay for a downstream subnet. The DHCP server is connected to the switch on a trusted port. Clients on the downstream subnet are failing to get addresses. What is the most likely reason for this failure?

The clients are on a different VLAN than the DHCP relay interface.

The interface facing the DHCP server is not configured as trusted for DHCP snooping.

The DHCP snooping binding table is full, preventing new entries.

The DHCP relay is not configured to add option 82 to the forwarded requests.

Juniper NetworksCertified Professional, Data Center (JNCIP-DC)

Domain 1Objective 2

Dynamic Host Configuration Protocol (DHCP) JN0-683 Practice Questions (Page 1)

Part of the Data Center Deployment and Management domain, which makes up ~11% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–2 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

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Questions 1–5

1application · medium
A network administrator is configuring a Junos switch as a DHCP relay. The DHCP server is at 10.0.0.10. The relay must forward requests from clients on VLAN 10 (interface irb.10) and VLAN 20 (interface irb.20). What is the correct configuration to achieve this?
Select an answer first
2foundation · easy
Which Junos command is used to monitor DHCP server activity and view recent messages?
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3expert · hard
A Junos switch is configured as a DHCP relay. Clients on subnet 192.0.2.0/24 are able to get addresses, but clients on subnet 198.51.100.0/24 are not. Both subnets are directly connected to the switch. The relay configuration has a single group with both interfaces. What is the most likely cause of the failure for the 198.51.100.0/24 clients?
Select an answer first
4expert · hard
You are deploying DHCP snooping on a Junos switch that also acts as a DHCP relay for a downstream subnet. The DHCP server is connected to the switch on a trusted port. Clients on the downstream subnet are failing to get addresses. What is the most likely reason for this failure?
Select an answer first
5foundation · easy
Which DHCP option is used to provide the domain name to a DHCP client?
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Dynamic Host Configuration Protocol (DHCP) JN0-683 Practice Questions (Page 1)

Questions 1–5

A network administrator is configuring a Junos switch as a DHCP relay. The DHCP server is at 10.0.0.10. The relay must forward requests from clients on VLAN 10 (interface irb.10) and VLAN 20 (interface irb.20). What is the correct configuration to achieve this?

Which Junos command is used to monitor DHCP server activity and view recent messages?

You are deploying DHCP snooping on a Junos switch that also acts as a DHCP relay for a downstream subnet. The DHCP server is connected to the switch on a trusted port. Clients on the downstream subnet are failing to get addresses. What is the most likely reason for this failure?

Which DHCP option is used to provide the domain name to a DHCP client?

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