A+ and Network+ additional vocab Flashcards
Q: What is non-repudiation?
A: Assurance that someone cannot deny their actions (e.g., via digital signatures).
Q: What is a PSU?
A: Power Supply Unit — converts AC to DC power for computer components.
Q: What is BIOS/UEFI?
A: Firmware interface between OS and hardware.
Q: What is a PCIe slot used for?
A: Connecting high-speed expansion cards (e.g., GPU, NIC).
Q: What is a KVM switch?
A: Allows control of multiple computers using one keyboard, video monitor, and mouse.
Q: What is a WAN?
A: Wide Area Network — spans large geographic distances.
Q: What is a switch?
A: Connects LAN devices and filters traffic by MAC address.
Q: What is a router?
A: Directs data between different networks using IP addresses.
Q: What is NAT?
A: Network Address Translation — translates private IPs to public IPs.
Q: What is subnetting?
A: Divides a network into smaller sub-networks using a subnet mask.
Q: What is DHCP?
A: Assigns dynamic IP addresses to devices.
Q: What does DNS do?
A: Translates domain names to IP addresses.
Q: What is SSH?
A: Secure Shell — encrypted remote command-line access.
Q: What port does HTTP use? HTTPS?
A: HTTP = port 80, HTTPS = port 443.
Q: What is SNMP used for?
A: Managing and monitoring network devices.
Q: What is RDP?
A: Remote Desktop Protocol — provides remote GUI access.
Q: What is SIEM?
A: Security Information and Event Management — logs and analyzes security data.
Q: What is RADIUS?
A: A centralized AAA protocol for remote access.
Q: What is SAML?
A: Web-based SSO using XML and assertions.
Q: What is LDAP?
A: Protocol for accessing and maintaining directory information.
Q: What is OAuth?
A: Authorization framework for third-party access.
Q: What is MAC / DAC / ABAC?
MAC: Label-based access (strict)
DAC: Owner-controlled
ABAC: Based on attributes like time, location
Q: What is PKI?
A: Public Key Infrastructure — system to manage keys and certificates.
Q: What is a hypervisor?
A: Software that runs virtual machines (Type 1 = bare metal, Type 2 = hosted).
Q: What is elasticity in cloud?
A: Ability to scale resources dynamically.
Q: What is VM sprawl?
A: Uncontrolled growth of virtual machines without proper oversight.
Q: What is ipconfig / ifconfig?
A: Commands to view and manage IP configurations.
Q: What is nslookup / dig?
A: DNS testing and lookup tools.
Q: What is Wireshark?
A: Packet capture and analysis tool.
Q: What is a multimeter used for?
A: Testing voltage, resistance, and continuity in circuits.
Q: What is OTDR?
A: Optical Time-Domain Reflectometer — tests fiber optics.
Q: What is a full backup vs incremental vs differential?
Full: All data
Incremental: Since last backup
Differential: Since last full backup
Q: What is BitLocker?
A: Windows full-disk encryption tool.
RAID (Redundant Array of Independent Disks)
Combines multiple disks for redundancy or performance (e.g., RAID 0, 1, 5).
