Network+ Exam Cram 2

Screw type connector used with coaxial cable. In computing environments, it is most commonly used to connect cable modems to ISP equipment or incoming cable feeds.

The automatic switching from one device or system to another. Servers can be configured in a failover configuration so that if the primary server fails, the secondary server takes over automatically.

The IEEE 802.3u specification for data transfers of up to 100Mbps over twisted-pair cable.

The capability of a component, system or network to endure a failure.

A field of a packet that holds a CRC value to ensure that all of the frame's data arrives intact.

A high-speed data transfer technology that is designed to extend the capabilities of existing LANs by using a dual-ring topology and a token-passing access method.

A technology that divides the output channel into multiple smaller-bandwidth channels, each of which uses a different frequency range.

Also known as fiber optics or optical fiber, a physical medium that is capable of conducting modulated light transmissions. Compared with other transmission media, fiber-optic cable is more expensive, but it is not susceptible to EMI or crosstalk, is capable of very high data rates, and can be used over greater distances than copper-based media.

A technology that defines full gigabit-per-second data transfer over fiber-optic cable. Commonly used with storage area network (SAN) implementations.

A program, system, device, or group of devices that acts as a barrier between one network and another. Firewalls are configured to allow certain types of traffic to pass while blocking others.

A high-speed serial bus technology that allows up to 63 devices to be connected to a system. FireWire provides sufficient bandwidth for multimedia operations and supports hot swapping and multiple speeds on the same bus.

A technology that provides data communication capabilities between two fixed locations. Fixed wireless can be used as a private networking method but is also becoming increasingly common as an Internet access method.

A method of controlling the amount of data that is transmitted within a given period of time. There are different types of flow control.

The entire domain name that specifies the name of the computer as well as the domain in which it resides and the top-level DNS domain (for example, marketing.quepublishing.com).

A switching method that uses the first 64 bytes of a frame to determine whether the frame is corrupted. If this first part is intact, the frame is forwarded.

A grouping of information that is transmitted as a unit across the network at the data-link layer of the OSI model.

In a data frame, the field that specifies the length of a frame.

In a data frame, the field that names the protocol that is being sent in the frame.

The number of cycles of an alternating current signal over a unit of time. Frequency is expressed in hertz.

A protocol that provides for the transfer of files between two systems. FTP is part of the TCP/IP protocol suite and operates at layer 7 of the OSI model.

A backup in which files, regardless of whether they have been changed, are copied to the backup media. In a full backup, the archive bits of the files are reset.

A system in which data is transmitted in two directions simultaneously. Compare with half-duplex.