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29 Cards in this Set

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First layer of the OSI Model. Protocols at the Physical layer accept frames from the Data Link Layer and generate voltage so as to transmit signals. pg 55
Amplitude-a measure of a waves strength at any given point in time
physical layer
How Bits together form a byte and how pieces of information does one byte carry
8 and 1
When signals only travel in one direction.
simplex
A form of transmission that allows multiple signals to travel simultaneously over one medium.
multiplexing
a data transmission involves only one transmitter and one receiver
point to point
loss of a signals strength as it travels away from its source.
Attenuation
Consists of color-coded pairs of insulated copper wires, each with a diameter of 0.4 to 0.8mm.
twisted pair cable
Consists of twisted wire pairs that are not only individually insulated, but also surrounded by a shielding made of a metallic substance such as foil
shielded twisted pair cable
a patch cable in which the termination locations of the transmit and receive wires on one end of the cable are reversed.
crossover cable
Networks that transmit signals through the atmosphere via infared or radiofrequency waves.
wireless networks
geographical area that an antenna or wireless system can reach.
range
A type of data transmission in which infrared light signals are used to transmit data through space, similar to the way a television remote control sends signals across the room.
infrared
A rule that governs how networks communicate.
protocol
Operates in the Transport layer of the OSI Model and provides reliable data delivery services
TCP-transmission core protocol
a network layer protocol that reports on the success or failure of data delivery.
ICMP-Internet control message protocol
a Network layer protocol that obtains the MAC address of a host, or node, and then creates a database that maps the MAC address of another to the host’s address
ARP-Address resolution protocol
a 12 character string that uniquely identifies a network node. The manufacturer hard codes it into the NIC. Composed of the block ID and the Device ID
Mac Address
An IP address reserved for communicating from a node to itself. Is always cited as 127.0.0.1, although in fact, transmitting to any IP address whose first octet is 12 will contact the originating device.
loopback address
an automated means of assigning a unique IP address to every device on a network.
dynamic host configuration protocol-dhcp
provides a computer with an IP address automatically. It assigns the computers network adapter an IP address from a predefined pool of addresses.
APIPA-Automatic Private IP Adressing
In the range of 1024 to 49151. These are accessible to network users and processes that do not have special administrative privileges.
registered ports
in the range of 0 to 1023 and are assigned to processes that only the operating system or an administrator of the system can access.
well known ports
any hosts on the Internet that need to look up domain name information.
resolvers
an application layer protocol used to send and receive files via TCP/IP.
FTP-File Transfer Protocol
is a terminal emulation protocol used to log on to remote hosts using the TCP/IP protocol suite.
Telnet
utility that can verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating with the network.
Ping-packet internet grouper
a protocol originally designed for IBM to provide transport and session layer services for applications running on small, homogeneous networks.
NetBIOS-Network Basic Input Output System
Is the protocol suite originally designed to interconnect Macintosh computers
Appletalk
process of assigning one network component to work with another
binding