Which of the following concepts refers to prioritizing a connection that had previously worked successfully?
Correct Answer:
C
MRU, or Most Recently Used, is a concept that refers to prioritizing a connection that had previously worked successfully. It is often used in load balancing algorithms to distribute the workload among multiple servers or paths. MRU assumes that the most recently used connection is the most likely to be available and efficient, and therefore assigns the next request to that connection. This can help reduce latency and improve performance12. The other options are incorrect because they do not refer to prioritizing a previous
connection. Round robin is a concept that refers to distributing the workload equally among all available connections in a circular order12. SCP, or Secure Copy Protocol, is a concept that refers to transferring files securely between hosts using encryption3. Link aggregation is a concept that refers to combining multiple physical links into a single logical link to increase bandwidth and redundancy4.
Which of the following BEST measures how much downtime an organization can tolerate during an unplanned outage?
Correct Answer:
C
RTO (Recovery Time Objective) is a metric that measures how much downtime an organization can tolerate during an unplanned outage before it affects its business continuity and reputation. RTO is usually expressed in hours or minutes and is determined by the criticality of the business processes and the impact of the outage on the revenue, customers, and stakeholders. RTO helps to define the recovery strategy and the resources needed to restore the normal operations as quickly as possible. Verified References: [RTO vs RPO]
Following a recent power outage, a server in the datacenter has been constantly going offline and losing its configuration. Users have been experiencing access issues while using the application on the server. The server technician notices the data and time are incorrect when the server is online. All other servers are working. Which of the following would MOST likely cause this issue? (Choose two.)
Correct Answer:
BF
The server has a CMOS battery failure and the time synchronization service is disabled on the servers. The CMOS battery is a small battery on the motherboard that powers the BIOS settings and keeps track of the date and time when the server is powered off. If the CMOS battery fails, the server will lose its configuration and display an incorrect date and time when it is powered on. This can cause access issues for users and applications that rely on accurate time stamps. The time synchronization service is a service that synchronizes the system clock with a reliable external time source, such as a network time protocol (NTP) server. If the time synchronization service is disabled on the servers, they will not be able to update their clocks automatically and may drift out of sync with each other and with the network. This can also cause access issues for users and applications that require consistent and accurate time across the network.
A user can successfully connect to a database server from a home office but is unable to access it from a hotel room. Which of the following authentication methods is most likely
configured?
Correct Answer:
D
Scope-based authentication is a method of restricting access to resources based on the location, network, or device of the user. It can be used to prevent unauthorized access from outside the organization’s network or from untrusted devices. In this case, the user can connect to the database server from the home office, which is likely within the scope of the authentication policy, but not from the hotel room, which is outside the scope.
References:
CompTIA Server+ Certification Exam Objectives1, page 15 CompTIA Server+: Authentication & Authorization2
Ann, an administrator, is configuring a two-node cluster that will be deployed. To check the cluster’s functionality, she shuts down the active node. Cluster behavior is as expected, and the passive node is now active. Ann powers on the server again and wants to return to the original configuration. Which of the following cluster features will allow Ann to complete this task?
Correct Answer:
B
The cluster feature that will allow Ann to complete her task is failback. A cluster is a group of servers that work together to provide high availability, scalability, and load balancing for applications or services. A cluster can have different nodes or members that have different roles or states. An active node is a node that is currently running an application or service and serving requests from clients. A passive node is a node that is on standby and ready to take over if the active node fails. A failover is a process of switching from a failed or unavailable node to another node in a cluster. A failback is a process of switching back from a failover node to the original node after it becomes available again. Failback can be automatic or manual depending on the cluster configuration.