计算机网络课后习题答案谢希仁第五?- 百度文库

𣺶ʱTΪλֲۡʱ1Դ㽻͵1顣ʱ2Ŀʼ2㽻յ˷飬Ӧʱ3Ŀʼ3㽻յ˷飬ҲӦ˺е·Ӧ𡣽ĿĿĵؽ㽻ȡ÷ʱŻᷢ͵1ӦȷӦʼشԴ㽻Է͵2֮ǰδиҪѵʱ2n-1TԣԴ㽻ĿͶݷٶÿ2n-1T1顣ȻЭЧǺܵ͵ġ

5-11ABBC·ABCݡBյAʱCתAȷϣҲ԰˳򷴹Ҳ˵BҪµ˳ǣ-ת-ȷϣ򣺽-ȷ-תּٶBڶºֹϣ洢Ϣȫʧָֻܿ˹ֻ֤вö˵˷ȷϢķCAȷϢܱ֤κݶܴABȷؽC

1Bð-ת-ȷ˳ڰAתCCյݣֹϣ洢Ϣȫʧ޷ȷϸAAطʱʱδյȷϣͻطʱBѻָתCCյظݡ

2Bý-ȷ-ת˳AȷϺAյȷϣΪѳɹֹϣ洢Ϣȫʧ޷תCAΪѳɹݶʧ

˾е·Э鶼˵˵ͨŲһɿ

ö˵˷ȷϢķ1Cյݺ󣬻AȷϣAյ󲻻طݡ2УCδյݣûиAȷϣAطʱʱδյȷϣطݣݵĶʧֻвö˵˷ȷϢķܱ֤κݶܴABȷؽC

6-03Ϊмϵͳתš·к

תм豸Ҫʵ͸ĶƱظƣԲź˥ ţ·м豸ҪǸMAC֡Ŀĵַյ֡תžй֡Ĺܡ

·м豸ڻ·ѡĹܡ

أϵмϵͳڸ߲Эתݵϵͳ

6-04Լ˵ЭãIPARPRARPICMP

IPЭ飺ʵ绥ʹ뻥ܸûһͳһ硣 ARPЭ飺IPַMACַӳ䡣

RARPʹֻ֪ԼӲַܹ֪IPַ

ICMP·ṩй쳣ı档ӶIPݱɹĻᡣ 6-091Ϊ255.255.255.0ʲô˼

2һΪ255.255.255.248ʸܹӶ̨

3 һAһBsubnet-idֱΪ16bit8bitк

ͬ

4 һBַ255.255.240.0ÿһϵǶ٣ 5 һAַΪ255.255.0.255ǷΪһЧ룿

6 ijIPַʮƱʾC22F1481ԽתΪʮƵʽ.ַһIP

ַ?

7 Cʹʵ?Ϊʲô?

1 CַӦֵҲABַ룬8λ

·Ѱǰ24λ

2 6

3 һĿͬ

4 4094ȫ0ȫ1ţ 5 ЧƼʹá 6 192.47.20.129Cࡣ

7 ССɽһ·ɱ 6-10 ԱIPַ (1) 128.36.199.3 (2) 21.12.240.17 (3) 183.194.76.253 (4) 192.12.69.248 (5) 89.3.0.1 (6) 200.3.6.2

𣺣1Bࡣ2Aࡣ3Bࡣ4Cࡣ5Aࡣ6Cࡣ

6-14һ3200bitTCPĴIP㣬160bitײΪݱĻͨ·ڶܴ͵֡еݲֻ1200bitݱ·зƬʵڶϲҪͶٱصݣġݡȻָݣ

𣺵ڶܴ͵֡еݲֻ1200bitÿIPƬݲ<1200-160(bit)Ƭƫ8ֽڼ64bitΪλģIPƬݲ󲻳1024bit3200bitıҪ4ƬԵڶϴ͵ıڣ3200+41603840bit 6-16ij··ɱзֱĿ硢һ·ֱӽһбʾӦһӿתȥ

128.96.39.0 255.255.255.128 ӿ0 128.96.39.128 255.255.255.128 ӿ1 128.96.40.0 255.255.255.128 R2 192.4.153.0 255.255.255.192 R3 *Ĭϣ R4 ֹյ5飬ĿվIPֱַΪ 1128.96.39.10 2128.96.40.12 3128.96.40.151 4192.4.153.17 5192.4.153.90 Էֱһ

⣺1ĿվIPַΪ128.96.39.10255.255.255.128룬128.96.39.0ɼ÷龭ӿ0ת

2ĿIPַΪ128.96.40.12

255.255.255.128128.96.40.0128.96.39.0

255.255.255.128128.96.40.0·ɱ֪龭R2ת 3ĿIPַΪ128.96.40.151255.255.255.128128.96.40.128255.255.255.192128.96.40.128·ɱ֪÷תѡĬ·ɣR4ת

4ĿIPַΪ192.4.153.17255.255.255.128192.4.153.0

255.255.255.192192.4.153.0·ɱ֪÷龭R3ת

5ĿIPַΪ192.4.153.90255.255.255.128192.4.153.0255.255.255.192192.4.153.64·ɱ֪÷תѡĬ·ɣR4ת 6-17ijλ䵽һBIPַnet-idΪ129.250.0.0õλ4000̨ƽֲ16ͬĵص㡣ѡΪ255.255.255.0Ըÿһصһ룬ÿصСֵֵ

4000/16=250ƽÿص250̨ѡ255.255.255.0Ϊ룬ÿ=28-2=254>250=28-2=254>16ʵ ɸÿص

ص㣺 ţsubnet-id IPСֵֵ 1 00000001 129.250.1.0 129.250.1.1---129.250.1.254 2 00000010 129.250.2.0 129.250.2.1---129.250.2.254 3 00000011 129.250.3.0 129.250.3.1---129.250.3.254 4 00000100 129.250.4.0 129.250.4.1---129.250.4.254 5 00000101 129.250.5.0 129.250.5.1---129.250.5.254 6 00000110 129.250.6.0 129.250.6.1---129.250.6.254 7 00000111 129.250.7.0 129.250.7.1---129.250.7.254 8 00001000 129.250.8.0 129.250.8.1---129.250.8.254 9 00001001 129.250.9.0 129.250.9.1---129.250.9.254 10 00001010 129.250.10.0 129.250.10.1---129.250.10.254 11 00001011 129.250.11.0 129.250.11.1---129.250.11.254 12 00001100 129.250.12.0 129.250.12.1---129.250.12.254 13 00001101 129.250.13.0 129.250.13.1---129.250.13.254 14 00001110 129.250.14.0 129.250.14.1---129.250.14.254 15 00001111 129.250.15.0 129.250.15.1---129.250.15.254 16 00010000 129.250.16.0 129.250.16.1---129.250.16.254

6-18һݱΪ4000ֽڣ̶ײȣھһ紫ܹͣ͵ݳΪ1500ֽڡӦΪЩݱƬݱƬֶγȡƬƫֶκMF־ӦΪֵ

IPݱ̶ײΪ20ֽ

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