Introduction to TCP/IP Networking Flashcards Preview

CISCO CCNA 200-301 > Introduction to TCP/IP Networking > Flashcards

Flashcards in Introduction to TCP/IP Networking Deck (26)
Loading flashcards...
1

System Network Architecture

IBM proprietary networking scheme (1974)

2

International Organization for Standardization (ISO)

In the late 70s began working on what would become known as the Open Systems Interconnection (OSI) networking model to standardize data networking protocols to allow communication among all computers across the entire planet.

3

RFC

Request for comments

4

Ethernet LAN

Standard defined by IEEE (Institute of Electrical and Electronic Engineers)

5

TCP/IP Model

Application
Transport
Network
Data Link
Physical

6

TCP/IP Application layer examples

HTTP, POP3, SMTP

7

TCP/IP Transport layer examples

TCP, UDP

8

TCP/IP Network layer examples

IP, ICMP

9

TCP/IP Data link & Physical layer examples

Ethernet, 802.11 (Wi-Fi)

10

URL

Uniform Resource Locator

11

TCP

Trasmission Control Protocol

12

UDP

User Diagram Protocol

13

Error-recovery service

Provided by TCP to Application layer

14

Adjacent-layer interaction

On a single computer, one lower layer provides a service to the layer just above. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.

15

Same-layer interaction

The two computers use a protocol to communicate with the same layer on another computer. The protocol defines a header that communicates what each computer wants to do

16

IP

Internet Protocol (provides addressing and routing)

17

DDN

Dot Decimal Notation

18

Frame

Link header + Data + Link Trailer at Data-Link layer

19

Packet

Header + Data at Network layer

20

Encapsulation

The process of putting headers (and sometimes trailers) around some data

21

Five Steps of Data Encapsulation: TCP/IP

1. Application layer (may or may not have a header): data
2. Transport layer adds for example TCP header: TCP + data
3. Network layer adds IP header: IP + TCP + data
4. Data-Link lauer adds Ethernet header AND trailer: Data-link + IP + TCP + data + Data-link
5. Physical layer trasmits the bits

22

Segment

Header + Data at Transport layer

23

Open Systems Interconnection (OSI)

Network model no longer used but for terminology

24

Layer 7

Application Layer in OSI Model (still used today even if OSI Model is not)

25

Protocol Data Unit (PDU)

Generic definition equivalent to segment, packet and frame

26

LxPDU

Layer x PDU