midterm s16 solutions -...
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CMP-405 – Spring 2016 Solutions Midterm ExamVersion 1
1.
Router A Router B Router C Router D
Network Next Hop Next Hop Next Hop Next Hop
10.0.0.0 Direct Direct 20.0.0.2
or 40.0.0.1
30.0.0.3
20.0.0.0 10.0.0.2
or 40.0.0.3
Direct Direct 30.0.0.3
30.0.0.0 40.0.0.3 20.0.0.3 Direct Direct
40.0.0.0 Direct 10.0.0.1
or 20.0.0.3
Direct 30.0.0.3
50.0.0.0 40.0.0.3 20.0.0.3 30.0.0.4 Direct
Default 40.0.0.5 10.0.0.1
or 20.0.0.3
40.0.0.5 30.0.0.3
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 1
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4.
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 1
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C6 B6 0B 1F C2 0E EB A8 6C 7A 4C C8 08 00 45 C1 00 72 82 CB 6F 82 56 4E DE B7 D7 87 97 D1 1D ED
AE 52 19 8A C0 CA 47 5F 0F ED 40 65 2E 9A 07 5E 9F 47 A5 F6 79 EB 03 2D 2D 44 EE DE 76 97 53 EB 77 97 04 80 DC 2D E0 17 0C 07 56 C4 49 E4 5C EE C5 21 A0 BB FB 8D 4D E3 6E 2E E3 7D 34 8F 30 F8 7A 19 D1 4B 04 3F 14 34 6B 7B 32 73 98 39 26 23 B0 12 13 C7 4F ED FF 98 05 46 F9 FB 82 4C E6 73
Destination Hardware Address C6 B6 0B 1F C2 0E 11000110 10110110 00001011 00011111 11000010 00001110 Source Hardware Address EB A8 6C 7A 4C C8 11101011 10101000 01101100 01111010 01001100 11001000 Frame Type 08 00 00001000 00000000
Vers & Len 45 01000101 Type Of Service C1
11000001
Total Length 00 72
00000000 01110010
Ident 82 CB 10000010 11001011
Flags & Fragment Offset 6F 82 01101111 10000010
Flags Don’t Fragment More Fragments
Fragment Offset 0F 82
00001111 10000010
TTL 56 01010110
Type 4E
01001110
Header Checksum DE B7
11011110 10110111
Source IP Address D7 87 97 D1
11010111 10000111 10010111 11010001
Class C
Network D7 87 97
11010111 10000111 10010111
Host D1
11010001
Source IP Address (Decimal) 215 135 151 209
Destination IP Address 1D ED AE 52
00011101 11101101 10101110 01010010
Class A
Network 1D
00011101
Host ED AE 52
11101101 10101110 01010010
Destination IP Address (Decimal) 29 237 174 82 Payload Data 19 8A C0 CA 47 00011001 10001010 11000000 11001010 01000111
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 2
1.
Router A Router B Router C Router D
Network Next Hop Next Hop Next Hop Next Hop
10.0.0.0 Direct Direct 20.0.0.2 40.0.0.1
20.0.0.0 10.0.0.2 Direct Direct 30.0.0.3
30.0.0.0 40.0.0.4 20.0.0.3 Direct Direct
40.0.0.0 Direct 10.0.0.1 30.0.0.4 Direct
50.0.0.0 40.0.0.4 10.0.0.1
or 20.0.0.3
30.0.0.4 Direct
Default 40.0.0.5 10.0.0.1 30.0.0.4 40.0.0.5
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 2
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4.
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 2
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4B 0A 4D A9 69 65 8A 98 9A F4 38 71 08 00 45 41 00 72 0C 70 6B A2 FB 6F 0C EB 8D 2F 77 66 52 2B 7B F3 A4 0D 5D B6 97 F4 B5 ED A8 F4 7F 35 BF 01 03 DD F2 54 33 95 58 36 0B EF A9 54 C0 8D 78 E4 8F A8 63 7B 51 61 A3 73 82 8A 12 23 3F F5 39 50 3D 96 3E 98 98 63 2B 61 83 1E 25 10 92 E0 33 23 FE A0 40 07 D5 9D 31 84 90 D2 71 3E BE 7A FA C2 EF 52 FD 0D 83 0E 7F 0B 18 4A 77 6F 3C 59 16 AA
Destination Hardware Address 4B 0A 4D A9 69 65 01001011 00001010 01001101 10101001 01101001 01100101 Source Hardware Address 8A 98 9A F4 38 71 10001010 10011000 10011010 11110100 00111000 01110001 Frame Type 08 00 00001000 00000000
Vers & Len 45 01000101 Type Of Service 41
01000001
Total Length 00 72
00000000 01110010
Ident 0C 70 00001100 01110000
Flags & Fragment Offset 6B A2 01101011 10100010
Flags Don’t Fragment More Fragments
Fragment Offset 0B A2
00001011 10100010
TTL FB 11111011
Type 6F
01101111
Header Checksum 0C EB
00001100 11101011
Source IP Address 8D 2F 77 66
10001101 00101111 01110111 01100110
Class B
Network 8D 2F
10001101 00101111
Host 77 66
01110111 01100110
Source IP Address (Decimal) 141 47 119 102
Destination IP Address 52 2B 7B F3
01010010 00101011 01111011 11110011
Class A
Network 52
01010010
Host 2B 7B F3
00101011 01111011 11110011
Destination IP Address (Decimal) 82 43 123 243 Payload Data A4 0D 5D B6 97 10100100 00001101 01011101 10110110 10010111
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 3
1.
Router A Router B Router C Router D
Network Next Hop Next Hop Next Hop Next Hop
10.0.0.0 40.0.0.4 Direct 20.0.0.2
or 50.0.0.4
Direct
20.0.0.0 40.0.0.4 Direct Direct 50.0.0.3
30.0.0.0 Direct 10.0.0.4 50.0.0.4 40.0.0.1
40.0.0.0 Direct 10.0.0.4 50.0.0.4 Direct
50.0.0.0 40.0.0.4 20.0.0.3
or 10.0.0.4
Direct Direct
Default 40.0.0.4 10.0.0.5 20.0.0.2
or 50.0.0.4
10.0.0.5
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 3
3.
4.
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 3
5.
7B EB 94 2A 6E 02 FD C9 55 18 99 9A 08 00 45 2A 00 72 B9 C1 6B 0A ED FF 4E B0 6A 62 B4 7C D8 EE 7F 06 88 5B 52 5E 47 86 1B 6D 70 21 87 14 8D 5E 59 73 64 F7 8C 1E DF D8 25 01 ED 8E E0 F6 45 9F B4 FF 51 21 AB 89 8E 0D 25 62 89 1A 75 38 97 CA E4 7D 6D 4C 7B 42 E2 49 BF 53 79 39 F1 F7 1B D5 88 1C 84 D0 7F 32 1E D3 91 62 79 FE 6B B1 A1 74 77 7B D6 CF A1 20 76 91 CD 0C AB D6 B9 88 DC 46
Destination Hardware Address 7B EB 94 2A 6E 02 01111011 11101011 10010100 00101010 01101110 00000010 Source Hardware Address FD C9 55 18 99 9A 11111101 11001001 01010101 00011000 10011001 10011010 Frame Type 08 00 00001000 00000000
Vers & Len 45 01000101 Type Of Service 2A
00101010
Total Length 00 72
00000000 01110010
Ident B9 C1 10111001 11000001
Flags & Fragment Offset 6B 0A 01101011 00001010
Flags Don’t Fragment More Fragments
Fragment Offset 0B 0A
00001011 00001010
TTL ED 11101101
Type FF
11111111
Header Checksum 4E B0
01001110 10110000
Source IP Address 6A 62 B4 7C
01101010 01100010 10110100 01111100
Class A
Network 6A
01101010
Host 62 B4 7C
01100010 10110100 01111100
Source IP Address (Decimal) 106 98 180 124
Destination IP Address D8 EE 7F 06
11011000 11101110 01111111 00000110
Class C
Network D8 EE 7F
11011000 11101110 01111111
Host 06
00000110
Destination IP Address (Decimal) 216 238 127 6 Payload Data 88 5B 52 5E 47 10001000 01011011 01010010 01011110 01000111
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 4
1.
Router A Router B Router C Router D
Network Next Hop Next Hop Next Hop Next Hop
10.0.0.0 Direct Direct 20.0.0.2 40.0.0.1
20.0.0.0 10.0.0.2 Direct Direct 50.0.0.3
30.0.0.0 Direct 10.0.0.1 50.0.0.4
or 20.0.0.2
40.0.0.1
40.0.0.0 Direct 10.0.0.1 50.0.0.4 Direct
50.0.0.0 40.0.0.4 20.0.0.3
or 10.0.0.1
Direct Direct
Default 10.0.0.5 10.0.0.5 20.0.0.2 40.0.0.1
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 4
3.
4.
CMP-405 – Spring 2016 Solutions Midterm ExamVersion 4
5.
C0 7B E7 B8 80 6F E5 8B B1 BE EF 81 08 00 45 90 00 72 FC 4A 64 34 EF 95 7E 2B 86 6C 7C 22 01 C2 E4 E3 E8 D0 A5 5B 2A 8A 28 68 E4 FC F6 F4 DE A6 E2 52 FB 07 CA 63 C5 2D 36 DF CE 6F 87 C5 B5 23 84 9F F3 C1 D2 F3 91 C5 99 41 DB B8 0A 3F 80 17 0C 11 C6 DB 7A A3 A5 78 7E BF 2A 66 6A 4A E5 DD 88 5D A2 41 7B F9 99 BB 4C 23 6C EF 52 DF 1F 51 A2 8A 6C C8 C0 80 56 DB 01 50 60 D2 2F 0C 0E 3D
Destination Hardware Address C0 7B E7 B8 80 6F 11000000 01111011 11100111 10111000 10000000 01101111 Source Hardware Address E5 8B B1 BE EF 81 11100101 10001011 10110001 10111110 11101111 10000001 Frame Type 08 00 00001000 00000000
Vers & Len 45 01000101 Type Of Service 90
10010000
Total Length 00 72
00000000 01110010
Ident FC 4A 11111100 01001010
Flags & Fragment Offset 64 34 01100100 00110100
Flags Don’t Fragment More Fragments
Fragment Offset 04 34
00000100 00110100
TTL EF 11101111
Type 95
10010101
Header Checksum 7E 2B
01111110 00101011
Source IP Address 86 6C 7C 22
10000110 01101100 01111100 00100010
Class B
Network 86 6C
10000110 01101100
Host 7C 22
01111100 00100010
Source IP Address (Decimal) 134 108 124 34
Destination IP Address 01 C2 E4 E3
00000001 11000010 11100100 11100011
Class A
Network 01
00000001
Host C2 E4 E3
11000010 11100100 11100011
Destination IP Address (Decimal) 1 194 228 227 Payload Data E8 D0 A5 5B 2A 11101000 11010000 10100101 01011011 00101010