CCNA

ARP – Address Resolution Protocol

The protocol that traces IP addresses to MAC addresses.

RARP – Reverse Address Resolution Protocol

The protocol within the TCP/IP stack that maps MAC addresses to IP addresses.

TFTP – Trivial File Transfer Protocol

A stripped down version of FTP, easy to use and fast. TFTP has no Directory browsing, no Authentication and insecure it can only send and receive files.

FTP – File Transfer Protocol

The TCP/IP protocol used for transmitting files between network nodes. FTP allows access to both Directories and files, manipulating directories, typing file contents and copying files between hosts.

In a Ethernet network, between any two points on the network, there can be no more than five network segments or four repeaters, and of those five segments only three of segments can be populated.

MAU – Multistation Access Unit

PING – Packet Internet Gopher

A utility that verifies connections to one or more remote hosts. The ping command uses the ICMP echo request and echo reply packets to determine whether a particular IP system on a network is functional. Ping is useful for diagnosing IP network or router failures.

Routable protocols can work with a router and can be used to build large networks. Non-Routable protocols are designed to work on small, local networks and cannot be used with a router.

One of two sublayers of the data link layer of OSI reference model, as defined by the IEEE 802 standard. This sublayer is responsible for error detection but not correction, flow control and framing.

A logical circuit that is created by Virtual channel links. It carries data between two endpoints in a network.

The other name for Virtual Channel is Virtual Circuit.

Along any transmission path from a given source to a given destination, a group of virtual circuits can be grouped together into what is called path.

Sending a message to a group multicast address is called multicasting, and its routing algorithm is called multicast routing.

Any protocol used by an internetwork to exchange routing data within an autonomous system. E.g. RIP, IGRP and OSPF.

Open System Interconnection. t was first name of 7 Layer

1518 bytes

a) Application Layer - 7

b) Presentation Layer – 6

c) Session Layer – 5

0 – 1023

IP plus port (IP on layer 3 and port on Layer 4 – In Encapsulation, socket base decision on Network Layer -Layer 3)

Voice, video, text

To divide data in pieces is called segmentation and divide segmentation in pieces called Fragmentation.

Data link layer

Frame Check Sequence -

CRC (Cyclic Redundancy Check) algorithm runs in switch that called FCS (Frame Check Sequence)