introduction to computer administration computer networks advanced topics

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Introduction Introduction to to Computer Administration Computer Administration Computer Networks Computer Networks Advanced Topics Advanced Topics

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Page 1: Introduction to Computer Administration Computer Networks Advanced Topics

Introduction Introduction toto

Computer AdministrationComputer Administration

Computer NetworksComputer NetworksAdvanced TopicsAdvanced Topics

Page 2: Introduction to Computer Administration Computer Networks Advanced Topics

Computer Networks – Computer Networks – Advanced Advanced TopicsTopics

ISO’s OSI Reference ModelISO’s OSI Reference Model TCP/IP Protocol SuitTCP/IP Protocol Suit Types of AddressesTypes of Addresses Address TranslationAddress Translation IP AddressingIP Addressing Interconnection DevicesInterconnection Devices WAN InterconnectionWAN Interconnection Network Services & ProtocolsNetwork Services & Protocols

Page 3: Introduction to Computer Administration Computer Networks Advanced Topics

ISO’s OSI Reference ModelISO’s OSI Reference Model

Page 4: Introduction to Computer Administration Computer Networks Advanced Topics

TCP/IP and OSI ModelTCP/IP and OSI Model

Page 5: Introduction to Computer Administration Computer Networks Advanced Topics

Types of AddressTypes of Address

Page 6: Introduction to Computer Administration Computer Networks Advanced Topics

Address TranslationAddress Translation

Computer NameComputer Name

TCP/UDP Port NumberTCP/UDP Port Number

IP AddressIP Address

MAC AddressMAC Address

DNS

ARP/RARP

Page 7: Introduction to Computer Administration Computer Networks Advanced Topics

Domain Name SystemDomain Name System The The Domain Name System Domain Name System (DNS) is used on the (DNS) is used on the

Internet and on many private networks.Internet and on many private networks. DNS Converts Domain Name to IPDNS Converts Domain Name to IP

Page 8: Introduction to Computer Administration Computer Networks Advanced Topics

IP AddressingIP Addressing

•The IP addresses are unique and universal.

•An IP address is a 32-bit address.

Page 9: Introduction to Computer Administration Computer Networks Advanced Topics

Classes of IP AddressClasses of IP Address

UNICAST IP Addresses : Class A, B & C

MULTICAST IP Addresses : Class D

Page 10: Introduction to Computer Administration Computer Networks Advanced Topics

Net-ID & Host-IDNet-ID & Host-ID

Page 11: Introduction to Computer Administration Computer Networks Advanced Topics

IP Addresses - Class AIP Addresses - Class A

Gateway Address ?

Page 12: Introduction to Computer Administration Computer Networks Advanced Topics

IP Addresses - Class BIP Addresses - Class B

Page 13: Introduction to Computer Administration Computer Networks Advanced Topics

IP Addresses - Class CIP Addresses - Class C

Page 14: Introduction to Computer Administration Computer Networks Advanced Topics

Loop Back & Private Loop Back & Private AddressesAddresses

Loop back Address : 127.0.0.1

Page 15: Introduction to Computer Administration Computer Networks Advanced Topics

Interconnection DevicesInterconnection Devices

Page 16: Introduction to Computer Administration Computer Networks Advanced Topics

Interconnection DevicesInterconnection Devices

Repeater / HUBRepeater / HUB What, Where & When to use?What, Where & When to use?

Bridge / Layer 2 SwitchBridge / Layer 2 Switch What, Where & When to use?What, Where & When to use?

Router / Layer 3 SwitchRouter / Layer 3 Switch What, Where & When to use?What, Where & When to use?

Gateway (Proxy/Firewall)Gateway (Proxy/Firewall) What, Where & When to use?What, Where & When to use?

Page 17: Introduction to Computer Administration Computer Networks Advanced Topics

WAN – InterconnectionsWAN – Interconnections

Dialup ConnectionDialup Connection ??

ISDNISDN ??

DSLDSL ??

ATMATM ??

Page 18: Introduction to Computer Administration Computer Networks Advanced Topics

Network Services & Network Services & ProtocolsProtocols

Data Data ServicesServices

File SharingFile Sharing FTPFTP 2121

EmailEmail SMTP & POPSMTP & POP ??

Web Web ServicesServices

Web ServerWeb Server HTTP / HTTPSHTTP / HTTPS ??

Proxy/Firewall Proxy/Firewall ServerServer NAT/PATNAT/PAT ??

MultimediaMultimedia

ServicesServices

Voice Over IPVoice Over IP

SIP & H.323SIP & H.323 ??Audio & Audio & VideoVideo

ConferencinConferencingg