第1 章 計(jì)算機(jī)網(wǎng)絡(luò)體系結(jié)構(gòu) ..................................................................................................... 1
1.1 考試大綱解析 ....................................................................................................................... 1
1.1.1 考試大綱提示 ............................................................................................. 1
1.1.2 考試大綱分析 ............................................................................................. 1
1.1.3 考試大綱與《計(jì)算機(jī)網(wǎng)絡(luò)（第8 版）》知識點(diǎn)對照解析 ...................... 2
1.2 真題解析 ............................................................................................................................... 3
1.2.1 歷年真題 ..................................................................................................... 3
1.2.2 歷年真題解析 ............................................................................................. 3
1.2.3 真題多維細(xì)目表 ......................................................................................... 4
1.3 計(jì)算機(jī)網(wǎng)絡(luò)基本概念 ........................................................................................................... 5
1.3.1 知識歸納 ..................................................................................................... 5
1.3.2 解題指導(dǎo) ..................................................................................................... 9
1.3.3 精選習(xí)題 ................................................................................................... 10
1.3.4 精選習(xí)題參考答案 ................................................................................... 11
1.4 計(jì)算機(jī)網(wǎng)絡(luò)體系結(jié)構(gòu)與參考模型 ..................................................................................... 14
1.4.1 知識歸納 ................................................................................................... 14
1.4.2 解題指導(dǎo) ................................................................................................... 16
1.4.3 重難點(diǎn)答疑 ............................................................................................... 18
1.4.4 精選習(xí)題 ................................................................................................... 20
1.4.5 精選習(xí)題參考答案 ................................................................................... 20
第2 章 物理層 ........................................................................................................................ 22
2.1 考試大綱解析 ..................................................................................................................... 22
2.1.1 考試大綱提示 ........................................................................................... 22
2.1.2 考試大綱分析 ........................................................................................... 22
2.1.3 考試大綱與《計(jì)算機(jī)網(wǎng)絡(luò)（第8 版）》知識點(diǎn)對照解析 .................... 23
2.2 真題解析 ............................................................................................................................. 24
2.2.1 歷年真題 ................................................................................................... 24
2.2.2 歷年真題解析 ........................................................................................... 26
2.2.3 真題多維細(xì)目表 ....................................................................................... 27
2.3 通信基礎(chǔ) ............................................................................................................................ 28
2.3.1 知識歸納 ................................................................................................... 28
2.3.2 解題指導(dǎo) ................................................................................................... 38
2.3.3 重難點(diǎn)答疑 ............................................................................................... 41
2.3.4 精選習(xí)題 ................................................................................................... 41
2.3.5 精選習(xí)題參考答案 ................................................................................... 44
2.4 傳輸介質(zhì) ............................................................................................................................ 47
2.4.1 知識歸納 ................................................................................................... 47
2.4.2 解題指導(dǎo) ................................................................................................... 49
2.4.3 重難點(diǎn)答疑 ............................................................................................... 51
2.4.4 精選習(xí)題 ................................................................................................... 51
2.4.5 精選習(xí)題參考答案 ................................................................................... 52
2.5 物理層設(shè)備 ........................................................................................................................ 53
2.5.1 知識歸納 ................................................................................................... 53
2.5.2 解題指導(dǎo) ................................................................................................... 54
2.5.3 重難點(diǎn)答疑 ............................................................................................... 55
2.5.4 精選習(xí)題 ................................................................................................... 55
2.5.5 精選習(xí)題參考答案 ................................................................................... 56
第3 章 數(shù)據(jù)鏈路層 ................................................................................................................. 57
3.1 考試大綱解析 .................................................................................................................... 57
3.1.1 考試大綱提示 ........................................................................................... 57
3.1.2 考綱分析 ................................................................................................... 58
3.1.3 考試大綱與《計(jì)算機(jī)網(wǎng)絡(luò)（第8 版）》知識點(diǎn)對照解析 .................... 58
3.2 真題解析 ............................................................................................................................ 60
3.2.1 歷年真題 ................................................................................................... 60
3.2.2 歷年真題解析 ........................................................................................... 64
3.2.3 真題多維細(xì)目表 ....................................................................................... 68
3.3 數(shù)據(jù)鏈路層的功能 ............................................................................................................ 69
3.3.1 知識歸納 ................................................................................................... 69
3.3.2 解題指導(dǎo) ................................................................................................... 71
3.3.3 重難點(diǎn)答疑 ............................................................................................... 73
3.3.4 精選習(xí)題 ................................................................................................... 74
3.3.5 精選習(xí)題參考答案 ................................................................................... 74
3.4 組幀 ................................................................................................................................... 75
3.4.1 知識歸納 ................................................................................................... 76
3.4.2 解題指導(dǎo) ......................................................................................