Appendix D
Functional Responsibilities Written Exercise: OSI Model OSI Model PDU Functional Responsibilities Examples Application User Interface Telnet, HTTP ASCII, EBCDIC, JPEG Presentation Defines how data is presented Keeping different applications’ data separate Operating System/ Application Access Scheduling Session Defines reliable or unreliable delivery TCP, UDP SPX Transport Segment Provide logical addressing which routers use for path determination Network IP, IPX 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-232 V.35 Physical Bits
IP Address Classes Exercise Answers 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 (17 of 17 layers) 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
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 (Seven of seven layers) 10.30.36.12 255.255.255.0 A 10.30.36.0
Broadcast Addresses Exercise Answers 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 (13 of 13 layers) 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
Written Exercise: Answers S/T NT1 U BRI 0 U R TA S/T NT1 S 0 Customer Premises Local Loop Service Provider Label the functional elements and reference points
Written Exercise: IPX Parameter Planning R3 Interface Name Network Address Encapsulation S0 d100 hdlc S1 c0b0 hdlc E1 b1b0 novell-ether Network c0b0 S1 S0 hdlc Slide 7 of 7 Purpose: Emphasize: R2 R3 S0 Network b001 S1 hdlc E1 Network b1b0 Network d100 E1 E0 SAP E0 novell-ether R1 R4 Write the IPX addresses and encapsulation types for R3
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