1. The technology used to distribute service requests to resources is referred to as _____________
a) load performing
b) load scheduling
c) load balancing
d) all of the mentioned
Explanation: Load balancing is an optimization technique.
2. Point out the correct statement.
a) A client can request access to a cloud service from any location
b) A cloud has multiple application instances and directs requests to an instance based on conditions
c) Computers can be partitioned into a set of virtual machines with each machine being assigned a workload
d) All of the mentioned
Explanation: Alternatively, systems can be virtualized through load-balancing technologies.
3. Which of the following software can be used to implement load balancing?
a) Apache mod_balancer
b) Apache mod_proxy_balancer
c) F6’s BigIP
d) All of the mentioned
Explanation: Load balancing can be used to increase utilization and throughput, lower latency, reduce response time, and avoid system overload.
4. Which of the following network resources can be load balanced?
a) Connections through intelligent switches
b) DNS
c) Storage resources
d) All of the mentioned
Explanation: Load balancing provides the necessary redundancy to make an intrinsically unreliable system reliable through managed redirection.
5. Which of the following is a more sophisticated load balancer?
a) workload managers
b) workspace managers
c) rackserve managers
d) all of the mentioned
Explanation: They determine the current utilization of the resources in their pool.
6. A ______ is a combination load balancer and application server that is a server placed between a firewall or router.
a) ABC
b) ACD
c) ADC
d) All of the mentioned
Explanation: An Application Delivery Controller is assigned a virtual IP address (VIP) that maps to a pool of servers based on application specific criteria.
7. Point out the wrong statement.
a) Load balancing virtualizes systems and resources by mapping a logical address to a physical address
b) Multiple instances of various Google applications are running on different hosts
c) Google uses hardware virtualization
d) All of the mentioned
Explanation: Google performs server load balancing to distribute the processing load and to get high utilization rates.
8. Which of the following is another name for the system virtual machine?
a) hardware virtual machine
b) software virtual machine
c) real machine
d) none of the mentioned
Explanation: Some virtual machines are designed to run only a single application or process and are referred to as process virtual machines.
9. Which of the following provide system resource access to virtual machines?
a) VMM
b) VMC
c) VNM
d) All of the mentioned
Explanation: VMM is another name for Hypervisor.
10. Point out the correct statement.
a) A virtual machine is a computer that is walled off from the physical computer that the virtual machine is running on
b) Virtual machines provide the capability of running multiple machine instances, each with their own operating system
c) The downside of virtual machine technologies is that having resources indirectly addressed means there is some level of overhead
d) All of the mentioned
Explanation: This makes virtual machine technology very useful for running old versions of operating systems, testing applications in what amounts to a sandbox.