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HW4_solution

HW4_solution - [1 a i classful is s special case of...

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6 [1] a) i) classful is s special case of classless with fixed masks, ii) For routers to classify them as belonging to same subnet, iii) refer to U9. b) refer to U9. c) No. d) refer to U9 e)refer to U9-private addresses f) refer to U9 and the lectures g) Outside network subnetting is transparent. Inside, the subnet id bits will be used. h) i) 145.11.120.0, ii) 145.11.232.0 to 145.11.239.255, iii) 31: 145.11.255.255, 145.11.112.0 i) i) refer to U9, ii) Routing will not be proper. Review the slides examples j) One possible address allocation : 1 st : 11.0.0.0/22, 2 nd : 11.0.4.0/22, 3 rd : 11.0.8.0/22 [2] a) 123.56.77.32 to 123.56.77.39, b) 200.17.21.128 to 200.17.21.159 c) 17.34.16.0 to 17.34.17.255, d) 180.34.64.64 to 180.34.64.67 [3] Subnet No. Network Address Direct Broadcast Address Range of Host IP Addresses 0 128.125.0.0 128.125.0.127 128.125.0.1 to 128.125.0.126 250 128.125.125.0 128.125.125.127 128.125.125.1 to 128.125.125.126 511 128.125.255.128 128.125.255.255 128.125.255.129 to 128.125.255.254 [4] i) Network Address = 128.124.0.0 Not USC, ii) Mask = 255.252.0.0, iii) 262144, iv) 262142, v) Yes, vi) Yes, vii) Yes [5] i) 128, 126, 28.124.50.0, ii & iii) Combined Subnet Mask = 255.255.254.0 Range = 128.124.0.0 to 128.124.1.255. [6] i) 199.123.253.16/24 ii) 255.255.255.224 Subnet Number Network Address 0 199.123.253.0 1 199.123.253.32 2 199.123.253.64 3 199.123.253.96 4 199.123.253.128 5 199.123.253.160 6 199.123.253.192 7 199.123.253.224 [7] i) 111.15.75.189/18, ii) 001011 10111101, iii)Yes if classful; with network address 111.0.0.0 . No, if classless
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