Hardware
This three-letter acronym refers to the volatile memory a computer uses to temporarily hold data and instructions for running programs.
What is RAM (Random Access Memory)?
This three-letter networking acronym identifies the system responsible for translating human-readable domain names into IP addresses.
What is DNS (Domain Name System)?
This short-range wireless technology is commonly used to connect smartphones with headphones, keyboards, and smartwatches.
What is Bluetooth?
This software layer makes it possible to create and run multiple virtual machines on a physical computer.
What is a hypervisor?
A laser printer produces increasingly faint text, and its toner-low warning is illuminated. What consumable should the technician replace first?
What is the toner cartridge?
A technician upgrading a laptop needs a smaller memory module than the standard DIMMs typically installed in desktop computers. Identify this memory form factor and expand its acronym.
What is SO-DIMM (Small Outline Dual In-line Memory Module)?
This network protocol automatically assigns IP addresses and provides configuration information such as subnet masks, default gateways, and DNS servers to network clients.
What is DHCP (Dynamic Host Configuration Protocol)?
A customer makes a contactless payment by holding their smartphone a few centimeters from a compatible payment terminal. What wireless communication technology makes this possible?
What is NFC (Near-Field Communication)?
A company uses a cloud-hosted email application accessed through a web browser. The cloud provider manages the application and underlying infrastructure. What cloud service model is this?
What is SaaS (Software as a Service)?
A computer emits diagnostic beep codes during startup instead of successfully booting. What built-in hardware diagnostic process is identifying a potential problem?
What is POST (Power-On Self-Test)?
Modern high-performance solid-state drives often use PCIe instead of SATA. This storage protocol was designed to reduce latency and take advantage of parallel command queues.
What is NVMe (Non-Volatile Memory Express)?
A network administrator wants to divide a single physical switched network into multiple logical broadcast domains without installing separate physical switches. What networking technology accomplishes this?
What is a VLAN (Virtual Local Area Network)?
A smartphone can activate a cellular subscription digitally without inserting a removable physical subscriber identity card. What technology allows this?
What is an eSIM (embedded Subscriber Identity Module)?
An organization rents virtual servers, networking resources, and storage from a cloud provider but remains responsible for installing, managing, and patching the guest operating systems.
What is IaaS (Infrastructure as a Service)?
A technician installs a new Ethernet cable, but no network link is established. A cable tester reports that conductors on pins 1 and 2 are electrically open. What type of cable fault has been detected?
What is an open circuit, caused by a broken conductor or faulty cable termination?
A workstation requires memory capable of detecting and automatically correcting single-bit memory errors. What three-letter acronym identifies this type of memory protection?
What is ECC (Error-Correcting Code)?
A wireless access point receives both network connectivity and electrical power from an Ethernet switch. The switch supports IEEE 802.3at. Identify the power-delivery technology and its specific version.
What is PoE+ (Power over Ethernet Plus), based on IEEE 802.3at?
Following a mobile device screen replacement, the display produces a clear image, but the screen no longer responds to finger touches. Which screen component should the technician inspect?
What is the digitizer (touchscreen digitizer or touch-sensing layer)?
An enterprise hosts sensitive workloads on its private infrastructure while running other workloads in a public cloud. The two environments are integrated so applications and data can operate across both. What cloud deployment model describes this?
What is a hybrid cloud?
After a CPU cooler replacement, a workstation begins overheating under heavy workloads. The cooling fan operates normally and the heat sink is securely mounted. What thermal interface material should the technician check for improper or missing application?
What is thermal paste (or a thermal pad, where applicable)?
A NAS contains four 2 TB hard drives configured using block-level striping and distributed parity. The array can survive one drive failure without losing data. Identify the RAID level and its approximate usable storage capacity.
What is RAID 5 (Redundant Array of Independent Disks, Level 5), providing approximately 6 TB of usable storage?
A Windows workstation configured for automatic IP addressing receives the address 169.254.18.9 with a /16 subnet mask. It cannot communicate with its default gateway. Identify the automatic addressing mechanism being used and the network service that likely failed to respond.
What are APIPA (Automatic Private IP Addressing) and DHCP (Dynamic Host Configuration Protocol)?
A company allows employees to use personally owned smartphones for work. IT must enforce corporate application policies and remotely remove company data while preserving personal information. Identify the device ownership policy and the management technology used.
What are BYOD (Bring Your Own Device) and MDM (Mobile Device Management)?
A development team must deploy and maintain its own web application code and data. However, the cloud provider must manage the underlying operating system, middleware, and application runtime environment. Which cloud service model best matches these requirements?
What is PaaS (Platform as a Service)?
A workstation configured with RAID 1 boots successfully, but the storage controller reports that the array is degraded. One of the two drives also reports S.M.A.R.T. failure warnings. What should the technician do to protect the existing data and restore fault tolerance?
What is verifying a current backup, replacing the failing drive, and rebuilding the RAID 1 mirror?