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Appendix D

Appendix D. Written Exercise: OSI Model. OSI Model. Examples. PDU. Functional Responsibilities. Application. Telnet, HTTP. User Interface. ASCII, EBCDIC, JPEG. Presentation. Defines how data is presented. Operating System/ Application Access Scheduling.

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Appendix D

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  1. Appendix D

  2. Written Exercise: OSI Model OSI Model Examples PDU Functional Responsibilities Application Telnet, HTTP User Interface ASCII, EBCDIC, JPEG Presentation Defines how data is presented Operating System/ Application Access Scheduling Keeping different applications’ data separate Session Defines reliable or unreliable delivery TCP, UDP SPX Transport Segment Provide logical addressing which routers use for path determination IP, IPX Network Packet Combines bits into bytes and bytes into frames, offers access to media using MAC address and performs error detection not correction 802.3 / 802.2 HDLC Data Link Frame Specifies voltage, wire speed and pin-out cables and moves bits between devices TIA/EIA-232V.35 Physical Bits

  3. IP Address Classes Exercise Answers Address Class Network Host 10.2.1.1 A 10.0.0.0 0.2.1.1 128.63.2.100 B 128.63.0.0 0.0.2.100 201.222.5.64 C 201.222.5.0 0.0.0.64 192.6.141.2 C 192.6.141.0 0.0.0.2 130.113.64.16 B 130.113.0.0 0.0.64.16 256.241.201.10 Nonexistent

  4. Subnet Mask Exercise Answers Address Subnet Mask Class Subnet 172.16.2.10 255.255.255.0 B 172.16.2.0 10.6.24.20 255.255.240.0 A 10.6.16.0 10.30.36.12 255.255.255.0 A 10.30.36.0

  5. Broadcast Addresses Exercise Answers Address Subnet Mask Class Subnet Broadcast 201.222.10.60 255.255.255.248 C 201.222.10.56 201.222.10.63 15.16.193.6 255.255.248.0 A 15.16.192.0 15.16.199.255 128.16.32.13 255.255.255.252 B 128.16.32.12 128.16.32.15 153.50.6.27 255.255.255.128 B 153.50.6.0 153.50.6.127

  6. Written Exercise: Answers S/T NT1 U BRI 0 U NT1 TA S/T R S 0 Customer Premises Local Loop Service Provider Label the functional elements and reference points

  7. Write the IPX addresses and encapsulation types for R3 Written Exercise: IPX Parameter Planning R3 Interface Name Network Address Encapsulation hdlc S0 d100 c0b0 hdlc S1 E1 novell-ether b1b0 Network c0b0 S1 S0 hdlc R2 R3 S0 S1 hdlc Network b001 Network b1b0 E1 E1 Network d100 E0 SAP E0 novell-ether R1 R4

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