cisco certified network associate ccna 640-802 network fundamentals

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© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Cisco Certified Network Associate CCNA 640-802 Network Fundamentals Asst.Prof. It-arun Pitimon [email protected]

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Cisco Certified Network Associate CCNA 640-802 Network Fundamentals. Asst.Prof . It-arun Pitimon [email protected]. Introduction to CCNA Exam. General Certifications. CCNA Certification. Day 1. Agenda. Network Fundamentals Transport Layer Network Layer Data Link Layer - PowerPoint PPT Presentation

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Page 1: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1

Cisco Certified Network Associate CCNA 640-802Network Fundamentals

Asst.Prof. It-arun [email protected]

Page 2: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2

Introduction to CCNA Exam

Page 3: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

3© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

General Certifications

Page 4: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

4© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

CCNA Certification

Page 5: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

5© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

DAY 1

Page 6: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

6© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Agenda

Network Fundamentals Transport Layer Network Layer Data Link Layer Physical Layer Ethernet and ARP Configuring and Testing your Network

Page 7: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

7© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

NETWORK FUNDAMENTALS

Page 8: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

8© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Data Networking Role, Components, and Challenges

Describe the various elements that make up a network– Devices

• These are used to communicate with one another

– Medium• This is how the devices

are connected together– Messages

• Information that travels over the medium

– Rules• Governs how messages

flow across network

Page 9: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

9© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Network Architecture Characteristics Explain four characteristics that are addressed by

network architecture design– Fault tolerance– Scalability– Quality of service– Security

Page 10: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

10© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Network Structure Define network media and criteria for making a network

media choiceNetwork media

this is the channel over which a message travels

Page 11: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

11© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Layers with TCP/IP and OSI Model Describe TCP/IP Mode

Page 12: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

12© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Layers with TCP/IP and OSI Model Explain protocol data units (PDU) and encapsulation

Page 13: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

13© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Layers with TCP/IP and OSI Model Describe the process of sending and receiving

messages

Page 14: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

14© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Layers with TCP/IP and OSI Model Compare OSI and TCP/IP model

Page 15: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

15© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Addressing and Naming Schemes Explain how labels in encapsulation headers are used

to manage communication in data networks

Page 16: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

16© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

TRANSPORT LAYER

Page 17: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

17© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Transport Layer Role and Services Supporting Reliable Communication

Page 18: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

18© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Transport Layer Role and Services Identify the basic characteristics of the UDP and TCP

protocols

Page 19: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

19© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Transport Layer Role and Services Identify how a port number is represented and describe

the role port numbers play in the TCP and UDP protocols.

Page 20: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

20© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Application and Operation of TCP Mechanisms Describe the role of port numbers in establishing TCP

sessions and directing segments to server process

Page 21: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

21© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Managing TCP Sessions Describe how TCP sequence numbers are used to

reconstruct the data stream with segments placed in the correct order

Page 22: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

22© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

UDP Protocol Describe the characteristics of the UDP protocol and

the types of communication for which it is best suited

Page 23: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

23© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

UDP Protocol Describe in detail the process specified by the UDP

protocol to reassemble PDUs at the destination device

Page 24: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

24© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

NETWORK LAYER

Page 25: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

25© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Network Layer Protocols and Internet Protocol (IP) Define the basic role of the Network Layer in data

networks

Page 26: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

26© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Network Layer Protocols and Internet Protocol (IP) Identify the basic characteristics and the role of the

IPv4 protocol

Page 27: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

27© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Network Layer Protocols and Internet Protocol (IP) Describe the role of framing in the Transport Layer and

explain that segments are encapsulated as packets

Page 28: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

28© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Network Layer Protocols and Internet Protocol (IP) Identify the major header fields in the IPv4 protocol and

describe each field's role in transporting packets

Page 29: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

29© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Grouping Devices into Networks and Hierarchical Addressing Describe the purpose of further subdividing networks

into smaller networks

Page 30: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

30© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Fundamentals of Routes, Next Hop Addresses and Packet Forwarding Describe the role of an intermediary gateway device in

allowing devices to communicate across sub-divided networks

Page 31: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

31© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Fundamentals of Routes, Next Hop Addresses and Packet Forwarding Describe the purpose and use of the destination

network in a route

Page 32: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

32© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Fundamentals of Routes, Next Hop Addresses and Packet Forwarding Trace the steps of several IP packets as they are

routed through several gateways from devices on one sub network to devices on other sub networks

Page 33: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

33© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

ADDRESSING THE NETWORK – IPV4

Page 34: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

34© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

IP Addressing Structure Describe the general role of 8-bit binary in network

addressing and convert 8-bit binary to decimal

Page 35: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

35© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

IP Address

Private IP

Page 36: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

36© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Classify and Define IPv4 Addresses Define public address and private address

Page 37: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

37© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Classify and Define IPv4 Addresses Describe the purpose of several special addresses

Page 38: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

38© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Calculating Addresses Extract network addresses from host addresses using

the subnet mask

Page 39: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

39© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Calculating Addresses Calculate the number of hosts in a network range given

an address and subnet mask

Page 40: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

40© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Variable Length Subnet Masks ( VLSM )

• เครอืขา่ยท่ีเราใชง้านกันอยูไ่มจ่ำาเป็นจะต้องมขีนาดเท่ากันเสมอไป เชน่

• LAN ต้องการ IP สำาหรบัอุปกรณ์มากกวา่ 2 เครื่อง• การเชื่อมต่อแบบจุดต่อจุด (Point-to-Point) ต้องการแค่

2 IP ก็เพยีงพอ• VLSM จะยอมใหม้กีารแบง่ Subnet ได้มากกวา่ 1 ครัง้สำาหรบั

แต่ละชุด IP เพื่อใหไ้ด้ขนาด IP ตามท่ีต้องการ• VLSM จะชว่ยลดจำานวนการจดัสรร IP ลง เป็นการใชง้าน IP

อยา่งมปีระสทิธภิาพ• VLSM ยงัชว่ยให ้Router ทำางานได้เรว็ขึ้นเน่ืองจากขนาดของ

Routing Table เล็กลง

Page 41: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

41© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Variable Length Subnet Masks ( VLSM )

Page 42: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

42© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

SummarizationSummarization, also called route aggregation, allows routing

protocols to advertise many networks as one addres

Page 43: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

43© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Summarization

Page 44: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

44© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Testing the Network Layer Describe the general purpose of the ping command,

trace the steps of its operation in a network, and use the ping command to determine if the IP protocol is operational on a local host

Page 45: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

45© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Testing the Network Layer Use ping to verify that a local host can communicate

with a gateway across a local area network

Page 46: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

46© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Testing the Network Layer Use tracert/traceroute to observe the path between two

devices as they communicate and trace the steps of tracert/traceroute's operation

Page 47: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

47© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Testing the Network Layer Describe the role of ICMP in the TCP/IP suite and its

impact on the IP protocol

Page 48: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

48© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

DATA LINK LAYER

Page 49: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

49© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Data Link Layer – Accessing the Media Describe the service the Data Link Layer provides as it

prepares communication for transmission on specific media

Page 50: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

50© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Data Link Layer – Accessing the Media Describe the role the Data Link layer plays in linking the

software and hardware layers

Page 51: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

51© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Media Access Control Techniques Identify two media access control methods for shared

media and the basic characteristics of each

Page 52: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

52© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Media access control addressing and framing data Describe the role of the frame header in the Data Link

layer and identify the fields commonly found in protocols specifying the header structure

Page 53: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

53© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Media access control addressing and framing data Describe the importance of the trailer in the Data Link

layer and its implications for use on Ethernet, a "non-reliable" media

Page 54: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

54© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

PHYSICAL LAYER

Page 55: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

55© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Physical Layer Protocols & Services Describe the role of bits in representing a frame as it is

transported across the local media.

Page 56: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

56© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Physical Layer Protocols & Services Describe the role of signaling in the physical media.

Page 57: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

57© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

ETHERNET AND ARP

Page 58: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

58© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Physical and Data Link Features of Ethernet Standards and Implementation

Page 59: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

59© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Function and Characteristics of the Media Access Control Method Carrier Sense Multiple Access with Collision Detection

Page 60: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

60© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Layer 2 addressing and its Impact on Network Operation and Performance The Frame – Encapsulating the Packet

Page 61: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

61© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Layer 2 addressing and its Impact on Network Operation and Performance Another Layer of Addressing

Page 62: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

62© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Layer 2 addressing and its Impact on Network Operation and Performance Ethernet Unicast, Multicast and Broadcast

Page 63: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

63© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Compare and Contrast the Use of Ethernet Switches versus Hubs in a LAN. Describe how a switch can eliminate collisions, backoffs

and re- transmissions, the leading factors in reduced throughput on a hub-based Ethernet network

Page 64: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

64© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Explain the Address Resolution Protocol (ARP) process. Mapping IP to MAC Addresses

Page 65: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

65© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Explain the Address Resolution Protocol (ARP) process. ARP – Destinations Outside the Local Network

Page 66: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

66© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Explain the Address Resolution Protocol (ARP) process. ARP – Removing Address Mappings

Page 67: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

67© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

CONFIGURING AND TESTING YOUR NETWORK (PACKET TRACER)

Page 68: Cisco Certified Network Associate  CCNA 640-802 Network Fundamentals

68© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public