In a Xen bridged networking model, what is the primary function of the virtual network interface (vif) that is created for a domU domain?

To act as a firewall that filters all traffic entering and leaving the domU

To connect the domU to a virtual bridge, which is also connected to the physical network interface, allowing the domU to appear on the same network as the host

To provide a direct physical connection to the host's NIC without any intermediate software

To translate the domU's private IP address to the host's public IP address using NAT

A domU that was running fine suddenly becomes unresponsive. The administrator can see the domain is still listed as 'running' with xl list, but it is not responding to network requests. The administrator needs to diagnose the issue. Which step should be taken first to determine if the guest OS is still alive?

Check the hypervisor logs in /var/log/xen.

Check the domain's console output using xl console.

Run xl destroy on the domain and recreate it.

A newly created domU fails to start. The administrator checks the domain configuration file and suspects a syntax error. To confirm the issue and see the specific error message, which command should the administrator run?

xl create -c /etc/xen/domain.cfg

xl create -n /etc/xen/domain.cfg

LPIC-3 Virtualization and Containerization

Domain 1Objective 2

351.2 Xen (weight: 3) LPIC-3-VIRTUALIZATION Practice Questions (Page 5)

Part of the Topic 351: Full Virtualization domain, which makes up ~39% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~14–23 in this domain), expect 3–5 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

11concepts

Questions 21–25

21foundation · easy
In a Xen bridged networking model, what is the primary function of the virtual network interface (vif) that is created for a domU domain?
Select an answer first
22expert · medium
A domU that was running fine suddenly becomes unresponsive. The administrator can see the domain is still listed as 'running' with xl list, but it is not responding to network requests. The administrator needs to diagnose the issue. Which step should be taken first to determine if the guest OS is still alive?
Select an answer first
23application · medium
A Xen domU needs to access a storage volume that is shared across multiple hosts in a cluster. The storage is provided by a dedicated SAN. The administrator wants to present the SAN LUN directly to the domU as a block device. Which storage backend should be specified in the domain configuration file?
Select an answer first
24application · medium
A newly created domU fails to start. The administrator checks the domain configuration file and suspects a syntax error. To confirm the issue and see the specific error message, which command should the administrator run?
Select an answer first
25foundation · easy
Which Xen networking model allows a domU to have a private IP address and share the host's public IP address for outbound internet access?
Select an answer first

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351.2 Xen (weight: 3) LPIC-3-VIRTUALIZATION Practice Questions (Page 5)

Questions 21–25

In a Xen bridged networking model, what is the primary function of the virtual network interface (vif) that is created for a domU domain?

A newly created domU fails to start. The administrator checks the domain configuration file and suspects a syntax error. To confirm the issue and see the specific error message, which command should the administrator run?

Which Xen networking model allows a domU to have a private IP address and share the host's public IP address for outbound internet access?

Keep studying — Topic 351: Full Virtualization