PGTRB Unit 10 Ethernet Card Computer Instructor Grade I 2021 SRT Study Circle Group COMMUNICATION

Ethernet card and Port

Ethernet card is a Network Interface
Card (NIC) that allows computers to
connect and transmit data to the devices
on the network. It may be an expansion
card or built-in type. Expansion card is a
separate circuit board also called as PCI
Ethernet card which is inserted into PCI
slot on motherboard of a computer.

history of ethernet
Bob Metcalfe invented Ethernet in 1973 while at Xerox PARC (Palo Alto Research Center
in California, USA) and the company patented it in 1975. It was used for interconnecting
advanced computer workstations, making it possible to send data to one another and to
high-speed laser printers. Metcalfe and others then finalized an open Ethernet standard in
1980, and by 1985 it had become an IEEE standard. An industry was born, and Ethernet was
ready for its meteoric rise.
There have been a number of networking standards published in the 802 branch of the
IEEE, including the 802.3 Ethernet and 802.5 Token Ring standards. The IEEE standard was
first published in 1985 with the title IEEE 802.3 Carrier Sense Multiple Access with Collision
Detection (CSMA/CD) Access Method and Physical Layer Specifications . The IEEE standard
does not use “Ethernet” in the title, even though Xerox relinquished their trademark on the
Ethernet name. That’s because open standards committees are quite sensitive about using
commercial names that might imply endorsement of a particular company. As a result, the
IEEE calls this technology 802.3 CSMA/CD or just 802.3. However, most people still use the
Ethernet name when referring to the network system described in the 802.3 standard.
Source : www.wikipedia.org

Ethernet cabling is the process
of connecting the computers with other
devices using Ethernet cables. The four
main components used in the Ethernet
cabling components are
1. Patch Cable (Twisted pair)
2. RJ45 Connector
3. Ethernet Ports
4. Crimping Tool



Unit 10 Communication and Network Concepts
Evolution of Networking : Internet; Communication and Network Concepts PGTRB Computer Instructor Grade I 2021 - SRT Study Circle Group
Internet PGTRB Computer Instructor Grade I 2021 - SRT Study Circle Group
History of Networking and the Internet PGTRB Computer Instructor Grade I 2021 SRT Study Circle Group

0:00 PG TRB COMPUTER INSTRUCTOR GRADE I
00:30 Communication and Network Concepts


PG TRB COMPUTER INSTRUCTOR - 2021


Syllabus
COMMUNICATION AND NETWORK CONCEPTS
Evolution of Networking : Internet
Data communication terminologies : Bandwidth ( Hz, KHz, MHz ) and
Data Transfer rate ( bps, kbps Mbps Gbps Tbps )
Network devices Modern ethernet Card hub Switch Router
Different Topologies - Bus, Tree ; Concepts of Lan, Wan, Man;
Protocol TCP / IP internet wireless / Mobile Communication GSM Electronic Mail Chat Video Conferencing
Network Security Conceps cyber Law Hackers and Crackers
Web pages hyper Test Markup Language ( HTML ) Hyper Text Transfer Protocal ( HTTP ) website web browser Web Servers

PGtrb computer science study material pdf 2021
pg trb computer instructor
trb computer instructor latest news 2021
trb computer instructor syllabus 2020
trb computer science latest news 2021
PG TRB CS Syllabus | Unit wise Reference | TRB Computer Instructor Syllabus | Tamil |
TRB COMPUTER INSTRUCTOR GRADE 1 NOTIFICATION| PG TRB CS
TRB Computer Instructor class | Computer Instructor Notes
TRB Computer Instructor free coaching class
TRB Computer Instructor Qusestions and Answers
Tamilnadu TRB Recruitment 2021 -Computer Instructor 2021