CompTIA Server+ SK0-004 Chapter 3: Server Roles, Resources, and Troubleshooting, Exams of Nursing

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COMPTIA SERVER + SK0-004 CHAP 3

Which server role uses HTTP as its transfer mechanism? A. Web B. Application C. Directory D. Database - AnswerA. Web servers are used to provide access to information to users connecting to the server using a web browser, which is the client part of the application. It uses the HTTP protocol as its transfer mechanism. Which resource is stressed the most on an application server? A. Disk B. NIC C. CPU D. Memory - AnswerC. The CPU is the component that is stressed on an application server since it is doing all of the processing on behalf of the clients. Multicore and multiple processors are advisable. Which of the following server roles is used to authenticate users to the network? A. Web B. Application C. Directory D. Database - AnswerC. A directory server is one that accepts and verifies the credentials of users. Typically it not only authenticates them but also provides them with access to resources using single sign-on. Which server role automates the process of providing an IP configuration to devices in the network? A. DNS B. Routing and Remote Access C. DHCP

D. NTP - AnswerC. DHCP servers are used to automate the process of providing an IP configuration to devices in the network. These servers respond to broadcast-based requests for a configuration by offering an IP address, subnet mask, and default gateway to the DHCP client. Which server role automates the process of providing an IP configuration to devices in the network? A. DNS B. Routing and Remote Access C. DHCP D. NTP - AnswerD. Network Time Protocol (NTP) servers are used as a time source by the devices in the network. This service ensures that log entries that are time stamped can be properly interpreted and that digital certificates, which depend heavily on time, continue to function correctly. Which server role resolves hostnames to IP addresses? A. DNS B. Routing and Remote Access C. DHCP D. NTP - AnswerA. DNS servers resolve device and domain names (website names) to IP addresses, and vice versa. Which of the following are the software stubs that allow devices to communicate with the operating system? A. Drivers B. Patches C. Shims D. Manifests - AnswerA. Device drivers are the software stubs that allow devices to communicate with the operating system. Drivers are used for interacting with printers, monitors, network cards, sound cards, and just about every type of hardware attached to the server. Which of the following describes the average length of time it takes a vendor to repair a device or component? A. MTBF B. MMTR

C. MTTR

D. MTR - AnswerC. One of the metrics that is used in planning both SLAs and IT operations in general is mean time to repair (MTTR). This value describes the average length of time it takes a vendor to repair a device or component. Which of the following represents aspects of the workload the resource is undergoing? A. Counters B. Alerts C. Metrics D. Markers - AnswerA. When monitoring resources, you select performance counters that represent aspects of the workload the resource is undergoing. Which of the following is not one of the four major resources? A. Memory B. CPU C. Disk D. Pagefile - AnswerD. The four are disk, CPU, memory, and NIC or network. Which of the following is the percentage of time the CPU spends executing a non-idle thread? A. Processor% Processor Time B. Processor% User Time C. Processor% Interrupt Time D. System\Processor Queue Length - AnswerA. Processor% Processor Time is the percentage of time the CPU spends executing a non-idle thread. This should not be over 85 percent. Which of the following is the amount of physical memory, in megabytes, available for running processes? A. Memory% Committed Bytes in Use B. Memory\Pool Non-Paged Bytes C. Memory\Available Mbytes

D. Memory\Pool Paged Bytes - AnswerC. Memory\Available Mbytes is the amount of physical memory, in megabytes, available for running processes. If this is less than 5 percent, you need more memory. What is a common disk metric that describes how fast the disk subsystem is able to read and write to the drive? A. ILO B. IOPS C. IOS D. TIOS - AnswerB. IOPS (Input/Output Operations per Second, pronounced eye-ops) is a common disk metric that describes how fast the disk subsystem is able to read and write to the drive. The higher this value, the better. To which component do drives abut and make a connection with the server so no cables are required? A. Frontplane B. Drive board C. Backplane D. Disk plane - AnswerC. Servers have backplanes that abut the drives and make a connection with the drive so no cables are required. These can go bad and sometimes need replacing. Which of the following allows the proper shutdown of all running applications and services? A. Hard reboot B. Soft reboot C. Slow reboot D. Easy boot - AnswerB. A soft reboot is better for the system and allows the proper shutdown of all running applications and services. But it requires that you be logged in as either administrator or root and that the server be in a responsive state. Which type of fault tolerance is recommended for servers running applications that do not have long- running in-memory state or frequently updated data? A. Load balancing B. Hot site C. Clustering

D. Cold site - AnswerA. In load balancing, a frontend device or service receives work requests and allocates the requests to a number of backend servers. This type of fault tolerance is recommended for applications that do not have a long-running in-memory state or frequently updated data. Which of the following means that the device is no longer supported by the vendor? A. Proprietary B. Legacy C. End of life D. Expiration - AnswerC. End of life can mean a couple of different things. From the vendor perspective, it probably means that they no longer provide support for a product. What drives the amount of memory for a print server? A. Number of printers B. Number of users assigned to the printer C. Size of the network D. Fault tolerance required - AnswerB. Print servers need lots of memory to hold the print jobs waiting in the print queue. The exact amount will depend on the number of users assigned to the printers being managed by this print server. Which of the following protocols is used when mail servers send email? A. POP B. SMTP C. SNMP D. IMAP4 - AnswerB. Mail servers run email server software and use SMTP to send and receive email on behalf of users who possess mailboxes on the server. Which RAID type increases fault tolerance and performance? A. RAID 0 B. RAID 1 C. RAID 3

D. RAID 5 - AnswerD. RAID 5 can recover from a single disk failure, and it can read multiple drives, thus increasing performance.