midterm s16 solutions -...

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


3.

4.


5.

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


1.



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


3.

4.


5.

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


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


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


1.



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


3.

4.


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


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


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


1.



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


3.

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


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


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

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