Vocabulary 0-A Flashcards
The 10 -Mbps baseband Ethernet specification using two pairs of twisted-pair cabling (Categories 3, 4, or 5): One pair transmits data and the other receives data. Has a distance limit of approximately 100 m (328 feet) per segment.
10BASE-T
A name for the IEEE Fast Ethernet standard that uses two-pair copper cabling, a speed of 100 Mbps, and a maximum cable length of 100 meters.
100BASE-T
A name for the IEEE Gigabit Ethernet standard that uses four-pair copper cabling, a speed of 1000 Mbps (1 Gbps), and a maximum cable length of 100 meters.
1000BASE-T
The IEEE standardized protocol for VLAN trunking.
802.1Q
The IEEE standard for wireless LANs using the U-NII spectrum, OFDM encoding, at speeds of up to 54 Mbps.
802.11a
The IEEE standard for wireless LANs using the ISM spectrum, DSSS encoding, and speeds of up to 11 Mbps.
802.11b
The IEEE standard for wireless LANs using the ISM spectrum, DSSS encoding, and speeds of up to 11 Mbps.
802.11g
The IEEE standard for wireless LANs using the ISM spectrum, OFDM encoding, and multiple antennas for single-stream speeds up to 150 Mbps.
802.11n
A LAN network design term that refers to a switch interface connected to end-user devices, configured so that it does not use VLAN trunking.
access link
A wireless LAN device that provides a means for wireless clients to send data to each other and to the rest of a wired network, with the AP connecting to both the wireless LAN and the wired Ethernet LAN.
access point
In security, the recording of access attempts.
accounting
In both IPv4 and IPv6, a set of consecutive addresses. This term is typically used for public addresses, assigned by some numbering authority (IANA/ ICANN, an RIR, or an ISP).
address block
The general topic of how on one computer, two adjacent layers in a networking architectural model work together, with the lower layer providing services to the higher layer.
adjacent-layer interaction
In Cisco routers, a means for one router to choose between multiple routes to reach the same subnet when those routes were learned by different routing protocols. The lower the _____, the better the source of the routing information.
administrative distance
One of many DSL technologies, ______ is designed to deliver more bandwidth downstream (from the central office to the customer site) than upstream.
ADSL
A specific IPv6 multicast address, FF02:: 1, with link-local scope, used to send packets to all devices on the link that support IPv6.
All-routers multicast address
The term used by Cisco to refer to a variety of security tools that help prevent various attacks, including antivirus, antiphishing, and antispam.
Anti-X
A router using OSPF in which the router has interfaces in multiple OSPF areas.
Area Border Router (ABR)
An Internet protocol used to map an IP address to a MAC address. Defined in RFC 826.
ARP
A list of IP addresses of neighbors on the same VLAN, along with their MAC addresses, as kept in memory by hosts and routers.
ARP table
The first packet-switched network, first created around 1970, which served as the predecessor to the Internet.
ARPANET
A feature of many Internet access technologies, including DSL, cable, and modems, in which the downstream transmission rate is higher than the upstream transmission rate.
asymmetric
The lack of an imposed time ordering on a bit stream. Practically, both sides agree to the same speed, but there is no check or adjustment of the rates if they are slightly different. However, because only 1 byte per transfer is sent, slight differences in clock speed are not an issue.
asynchronous
The international standard for cell relay in which multiple service types (such as voice, video, and data) are conveyed in fixed-length (53-byte) cells. Fixed-length cells allow cell processing to occur in hardware, thereby reducing transit delays.
ATM
In security, the verification of the identity of a person or a process.
authentication
In security, the determination of the rights allowed for a particular user or device.
authorization
An IEEE standard mechanism (802.3u) with which two nodes can exchange messages for the purpose of choosing to use the same Ethernet standards on both ends of the link, ensuring that the link functions and functions well.
autonegotiation
An internetwork in the administrative control of one organization, company, or governmental agency, inside which that organization typically runs an interior gateway protocol (IGP).
autonomous system
A physical connector on a router that is designed to be used to allow a remote terminal, or PC with a terminal emulator, to access a router using an analog modem.
<p>auxiliary port</p>
