Term 241
EAP
EAP is a flexible authentication framework used in network access control, supporting multiple methods like passwords, certificates, and tokens.
Acronym study
Terms 241–270 of 1033 N10-009 acronyms and key terms. Each entry includes a plain-English definition and a link to the full 800-word glossary page with exam context and practice questions.
Term 241
EAP is a flexible authentication framework used in network access control, supporting multiple methods like passwords, certificates, and tokens.
Term 242
EAPoL is a network authentication protocol that encapsulates EAP frames over IEEE 802 LANs, enabling port-based access control.
Term 243
ECC (Elliptic Curve Cryptography) is a public-key cryptographic method that uses the mathematics of elliptic curves to provide strong security with smaller key sizes than older methods like RSA.
Term 244
Economies of scale is the cost advantage that businesses get when production becomes more efficient as they grow larger, reducing the cost per unit.
Term 245
An edge location is a site deployed by a content delivery network that caches copies of data closer to users to reduce latency and improve access speed.
Term 246
An edge network is a distributed computing architecture that brings data processing and storage closer to the physical location where data is generated, rather than relying on a central data center.
Term 247
EIGRP is an advanced distance-vector routing protocol that uses bandwidth and delay by default to find the best path for data packets across a computer network.
Term 248
An Elastic IP is a static, public IPv4 address that you can allocate to your cloud account and remap to different resources, masking failures by allowing quick reassignment.
Term 249
Elasticity is the ability of a cloud system to automatically add or remove computing resources (like servers, storage, or bandwidth) in response to real-time changes in demand.
Term 250
Electrostatic discharge (ESD) is the sudden flow of electricity between two objects with different electrical charges, often caused by built-up static electricity, which can damage sensitive electronic components.
Term 251
Elliptic curve cryptography is a type of public-key cryptography that uses the mathematics of elliptic curves to create smaller, faster, and more efficient cryptographic keys compared to older methods like RSA.
Term 252
An embedded SIM is a small, soldered chip inside a device that works like a traditional SIM card but can be programmed remotely, letting you switch mobile carriers without swapping a physical card.
Term 253
A Cisco IOS command that sets a password to protect privileged EXEC mode (enable mode) using a strong, one-way cryptographic hash (MD5 by default), replacing the weaker 'enable password' command.
Term 254
Encapsulation is the process of wrapping data with protocol headers and trailers before sending it across a network.
Term 255
Encryption is the process of converting readable data into a secret code to prevent unauthorized access.
Term 256
Enhanced Interior Gateway Routing Protocol (EIGRP) is a Cisco-proprietary advanced distance-vector routing protocol that calculates the best path through a network using multiple metrics, with fast convergence and loop-free routing.
Term 257
End of Life (EOL) is the date when a vendor stops selling, supporting, or patching a product, requiring migration to avoid security and compliance risks.
Term 258
EOS (End of Support) marks the date when a vendor stops providing technical assistance, patches, and firmware updates for a product.
Term 259
Err-disabled is a switch port state that occurs when the switch detects a critical error on that port and automatically shuts it down to protect the network.
Term 260
Error-correcting code (ECC) is a method used by computer memory to automatically detect and fix single-bit errors without crashing or corrupting data.
Term 261
Electrostatic Discharge is the sudden flow of electricity between two electrically charged objects caused by contact or an electrical short, which can damage sensitive electronic components.
Term 262
ESP (Encapsulating Security Payload) is a core protocol in IPsec that provides confidentiality, data integrity, and authentication for VPN traffic by encrypting and optionally authenticating the payload of IP packets.
Term 263
ESP (Encapsulating Security Payload) provides confidentiality, data origin authentication, connectionless integrity, and anti-replay protection for IP packets.
Term 264
ESSID (Extended Service Set Identifier) is the human-readable name of a wireless network that identifies an extended service set across multiple access points.
Term 265
EtherChannel is a technology that bundles multiple physical Ethernet links into a single logical link to increase bandwidth and provide redundancy.
Term 266
Ethernet is a wired networking technology that connects devices like computers, printers, and servers to each other and to the internet using cables.
Term 267
EUI-64 is a method for creating a 64-bit interface identifier from a 48-bit MAC address, used to form an IPv6 link-local or stateless address auto-configuration (SLAAC) address.
Term 268
A EULA is a legally binding contract between a software developer and the user that outlines how the software can be used and what the user agrees to before installation or first use.
Term 269
An evil twin attack is a rogue wireless access point that impersonates a legitimate network to intercept or manipulate user traffic.
Term 270
The exit interface is the network interface through which a router forwards a packet out of the router after matching a route in its routing table.