Computer Networks

The local loop is the physical link or circuit that connects from the customer premises to the edge of the carrier or telecommunications service provider's network.

Channel Associated Signaling (CAS) is a method where signaling information is sent within the same channel as the voice traffic, often using bit-stealing.

SCSI stands for Small Computer System Interface. It is a set of standards for physically connecting and transferring data between computers and peripheral devices.

NAS stands for Network Attached Storage. It is a file-level computer data storage server connected to a computer network providing data access to a heterogeneous group of clients.

HTPC stands for Home Theater PC, which is a computer system designed for entertainment purposes like playing movies or music in a living room environment.

HBA stands for Host Bus Adapter, a circuit board or integrated circuit adapter that connects a host system to other network and storage devices.

A worm is a standalone malware that replicates itself to spread to other computers, often consuming significant network bandwidth in the process. Trojans and rootkits have different primary functions, such as masquerading as legitimate software or hiding malicious processes.

Access, perimeter, and inter-facility are recognized layers of physical defense. Network is a logical layer of the OSI model, not a standard category of physical defense layers.

A cable tester is designed to verify the continuity and proper termination of network cables like CAT5e. A toner probe is for tracing cables, an OTDR is for fiber optics, and a loopback plug is for testing ports.

WAN stands for Wide Area Network, which covers a broad geographic area.

LAN stands for Local Area Network, which connects devices within a limited area like a home or office.

A Network Interface Card (NIC) is a hardware component that allows a computer to connect to a network. Other options are incorrect expansions of the acronym.

A Metropolitan Area Network (MAN) is a computer network that interconnects users with computer resources in a geographic area or region larger than that covered by a LAN but smaller than a WAN.

VoIP, email, and instant messaging are all common and widely used methods for communicating over the internet.

When a port is set to dynamic auto and connects to a port set to dynamic desirable, the negotiation results in a trunk link.