Online Access Free 304-200 Exam Questions

What is the usual way to gain command line access to computing instances in an IaaS cloud?

• A.By providing a public SSH key to the cloud management system and using the matching private SSH key to log into the instances.
• B.By either telnet or SSH using the credentials of the cloud management system account with administrative privileges.
• C.Usually computing instances are accessed through a web frontend and do not allow command line access.
• D.By using a VNC console which does not require authentication when it is invoked via the cloud management system.
• E.By using a telnet session with the credentials set and publicized by the creator of the computing instance's system image.

Using Linux Virtual Server (LVS) without any additional tools provides which of the following features?

• A.Balancing network connections across several backend servers.
• B.Checking the integrity of services on backend servers.
• C.Automatically taking over the services of failed nodes.
• D.Restarting failed services on the backend servers.
• E.Starting and stopping backend servers as needed.

Which one of the following options represents a valid declaration of a backend server with HAProxy?

• A.backend server_x 10.1.0.1:80
• B.server server_x 10.1.0.1:80 check
• C.host server_x 10.1.0.1:80 cookie server_x
• D.pool server_x 10.1.0.1:80

Which of the following describes a split brain situation in a high availability cluster?

• A.Several cluster nodes access a shared resource without coordination.
• B.In addition to shared storage, each node has local storage that is not shared with other nodes.
• C.Incoming network connections are accidentally forwarded to more than one backend server.
• D.Instead of shared storage, each node uses local storage managed by itself and replicates with other nodes.
• E.Several cluster nodes run different instances of the same services.

What is oVirt?

• A.An extension to the Linux Kernel used to provide container virtualization similar to LXC and OpenVZ.
• B.A library that provides access to several different virtualization technologies in a common manner.
• C.A comprehensive management infrastructure for Linux-based virtualization.
• D.An approach used to eliminate the need for virtualization called Zero-Virt.
• E.A Linux-based hypervisor similar to KVM and Xen.