Introduction to System Administration Exam Questions with complete Solutions Rated A+

Introduction to System Administration Exam Questions with complete Solutions Rated A+ system administration - Answers branch of engineering that concerns the operational management of human-computer systems system administration - Answers refers to the management of one or more hardware and software systems ensuring that the systems are running efficiently and effectively system administrator - Answers system administration task is performed by System Administrator Roles - Answers Create and manage user accounts System Administrator RoleS - Answers Configuring and maintaining hardware and software System Administrator RolEs - Answers Providing end-user support system Administrator RolEs - Answers Perform backup and restore operations SYstem Administrator RolEs - Answers Maintain documentation and licenses SYstem AdministratoR RolEs - Answers System planning Scaling the system Assessing new technologies Anticipate and avoid problems SYstem ADministratoR RolEs - Answers Security Management Monitor system usage and performance and managing resources (disk, memory , CPU) SYsteM ADministratoR RolEs - Answers Troubleshoot and repair system problems; and determine, locate, and repair/replace problem components Perform upgrades/patches, and test devices and schedule downtime to manage devices. Challenges - Answers Poor quality control in software or procedures. Problems in operating systems and their subsystems. Unfortunate clashes between incompatible software Inexplicable phenomena, cosmic rays, viruses and other attacks Handling hardware - Answers Read instructions •Instructions are there for a reasons Identify or use correct connectors/cables. • Many manufacturers use cables which look similar, superficially, but which actually are different. Handling hardwarE - Answers Use safety gears • Before touching any computer components, make sure that you wear safety shoes and gloves. Use correct memory modules and disk. Data Center - Answers is a facility used to house computer systems and associated components, such as telecommunications and storage systems Data CenteR - Answers is a facility that centralizes an organization's IT operations and equipment, as well as where it stores, manages, and disseminates its data. rack - Answers contains multiple mounting slots called bays, each designed to hold a hardware unit secured in place with screws rack server - Answers has a low-profile enclosure, in contrast to a tower server, which is built into an upright, standalone cabinet Power - Answers is needed to keep all equipment up and running. Data centers usually have redundant electricity and often a backup generator to provide reliable power in case of power outage. uninterruptible power supply (UPS) - Answers ensures that the quality remains constant even after a power outage Computers and systems - Answers are connected to the internet connection to enable the access of IT solutions. Data - Answers is distributed to and from the server by a system of network switches. Network connectivity - Answers Depending on the density, a data center can have one or more switches per rack. Security system - Answers Data centers usually have a range of security devices to limit access to the virtual environment and physical building. server room - Answers is protected by several technologies to mitigate damage from storms and reduce seismic movement from earthquakes. Security systeM - Answers They also have fire safety systems to prevent damage from external and internal fires. monitoring systems - Answers Data centers usually have this to help operators manage the working environment. Monitoring systems - Answers help monitor energy consumption, temperature, and relative humidity. Cooling system - Answers In a data center, computing equipment usually emit a considerable amount of heat. cooling systems - Answers help prevent overheating, use water, glycol, and chilled air to cool the room. Policies and procedures - Answers data center operators are guided by a set of this that helps maintain efficiency within the facility. ORGANIZATIONAL POLICIES - Answers the sysadmin has to think carefully about computer security and whether or not to allow access to certain users IT INFRASTRUCTURE SERVICES - Answers the services that are potentially used in an organization like file storage, email, web content ROUTINE MAINTENANCE - Answers when managing machines for a company, you don't just set it and forget it, you have to constantly provide updates and maintenance so that they run the latest secure software. VENDORS - Answers Sysadmins must be sure to weigh their option before purchasing anything. They need to think about hardware supply. Working with vendors or other businesses to buy hardware is a common practice. USER AND HARDWARE PROVISIONING - Answers sys admins have to be able to create new users and give them access to their company's resources. They also have to remove users from an IT infrastructure if users leave the company. It's not just user accounts they have to worry about, sys admins are also responsible for user machines. PROCUREMENT - Answers This is the stage where hardware is purchased or re-used for any employee. DEPLOYMENT - Answers This is where hardware is set up so that the employee can do their job. MAINTENANCE - Answers This is the stage where software is updated and hardware issues are fixed if and when they occur. RETIREMENT - Answers In this final stage, hardware becomes unusable or no longer needed and it needs to be properly removed from the fleet. TROUBLESHOOTING AND MANAGING ISSUES - Answers when you're managing an entire IT infrastructure, you'll constantly have to troubleshoot problems and find solutions for your IT needs. This will probably take up most of your time as an IT support specialist. IN CASE OF FIRE, BREAK GLASS - Answers It's super important to make sure that your company's data is routinely backed up somewhere. Preferably, far away from it's current location. Being responsible for keeping data available isn't easy. With Great Power Comes Great Responsibility - Answers •The most important thing is to avoid using administrator rights for tasks that don't require them. •Respect the privacy of others. Being an administrator of an email server doesn't mean you should read someone else's email with Great Power Comes Great Responsibility - Answers •You shouldn't use your administrator rights to bypass any rules.