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Q31. What is true for a virtual IP address in the context of keepalived? (Choose TWO correct answers.)
A. The distinct IP addresses of all backend servers are called virtual IP addresses.
B. Every server running keepalived has exactly one virtual IP address and cannot have any additional virtual IP addresses.
C. The virtual IP address is the address to which incoming connections are made in order to reach the load balancer.
D. keepalived uses VRRP to ensure the availability of the virtual IP address.
E. Within the whole LVS cluster managed by keepalived, the virtual IP address never appears on any network interface.
Answer: C, D
Q32. What does IaaS stand for?
A. Integration as a Service
B. Intelligence as a Service
C. Instances as a Service
D. Infrastructure as a Service
E. Information as a Service
Answer: D
Q33. When using the gatewaying/direct routing forwarding method of Linux Virtual Server (LVS), which of the following statements is true?
A. The default route of all backend servers must point to the LVS host.
B. Every backend server must accept packets addressed to the IP address of the virtual service.
C. On the backend servers, all packets appear to originate from the IP address of the LVS host.
D. The link layer addresses of all backend servers must be included in the LVS configuration.
E. When using gatewaying/direct routing, only the round robin algorithm is available.
Answer: B
Q34. In keepalived, what is configured by the configuration option sorry_server?
A. The addresses of backend servers that were overloaded in the past and should be scheduled with a reduced priority.
B. The hostnames of the servers that, despite the remaining configuration, should always be scheduled by the Serial Operation Round Robin algorithm.
C. The addresses of backend servers that should not get assigned any new connections.
D. The default virtual host that is assigned to incoming HTTP requests missing a Host: header before forwarding them to a backend server.
E. The address of a server to which requests are redirected in case no real server is available.
Answer: E
Q35. Which statement is true regarding the Linux kernel module that must be loaded in order to use KVM?
A. It must be loaded into the kernel of each virtual machine to provide paravirtualization which is required by KVM.
B. It must be loaded into the kernel of the host system in order to use the virtualization extensions of the host system's CPU.
C. It must be loaded into the kernel of the host system only if the console of a virtual machine will be connected to a physical console of the host system.
D. It must be loaded into the kernel of each virtual machine that will access files and directories from the host system's file system.
E. It must be loaded into the kernel of the first virtual machine as it interacts with the KVM bare metal hypervisor and is required to trigger the start of additional virtual machines.
Answer: B
Regenerate 304-200 exam:
Q36. Which of the following statements is true regarding XenStore?
A. It is a web interface used to provide self-service domain provisioning to users with sufficient privileges.
B. It saves the persistent configuration of all defined Xen domains and restores them when the host system is started.
C. It manages disk file images on behalf of all virtual machines and provides them as virtual devices to guest domains.
D. It stores run time information regarding Xen and its domains using hierarchical namespaces shared between domains.
E. It is a software repository located within the host system used to provide software packages to the guest domains.
Answer: D
Section 2: Sec Two (73 to 108)
Details:Topic 2, High Availability Cluster Management
Q37. In order to use the option dom0_mem to limit the amount of memory assigned to the Xen Domain-0, where must this option be specified?
A. In its Makefile, when Xen is built.
B. In the configuration file /etc/xen/Domain-0.cfg, when Xen starts.
C. In the bootloader configuration, when Xen is booted.
D. In its .config file, when the Domain-0 kernel is built.
E. In any of Xen's global configuration files.
Answer: C
Q38. What is the purpose of fencing in a high availability cluster?
A. Prevent failed nodes from interfering with the remaining intact part of the cluster.
B. Ensure a consistent assignment of all network connections from a client to the same cluster server.
C. Define constraints on which services may run on the same cluster node.
D. Enforce storage quota and other resource limitations for each service provided by the cluster.
E. Provide multi-tenancy cluster configuration for cloud computing.
Answer: A
Q39. Which of the following commands can be used to determine whether the local machine is capable of running full virtualized Xen guests? (Choose TWO correct answers.)
A. dmesg |grep -i intel|grep -i vt; dmesg |grep -i amd|grep -i v
B. egrep '(vmx|svm)' /proc/cpuinfo
C. xl dmesg | grep -i hvm
D. grep -i "Full Virtualization" /proc/xen
E. grep -i "Full Virtualization" /etc/xen/*
Answer: B, C
Q40. In a Pacemaker cluster, which one of the following commands shows the right syntax for fencing the node on port 3 using the APC rack PDU device which can be found at IP address 192.168.1.145?
A. apc_stonith -a 192.168.1.145 -l apc -n 3 -v -o shutdown -r now
B. fence_apc -a 192.168.1.145 -l apc -p apc -n 3 -v -o shutdown -r now
C. fence_apc -a 192.168.1.145 -l apc -p apc -n 3 -v -o reboot
D. apc_stonith -a 192.168.1.145 -l apc -p apc -n 3 -v -o reboot
Answer: C