1. iClicker Questions CNIT 201E

2. After 3.2

3. What OSI Model Layer performs encryption? A.Application B.Presentation C.Session D.Transport E.Some other layer 1 of 3

4. Which protocol is used to provide a terminal so commands can be typed in to control remote devices? A.DNS B.SMTP C.Telnet D.FTP E.HTTP 2 of 3

5. What OSI Model Layer can restore a connection that times out? A.Application B.Presentation C.Session D.Transport E.Some other layer 3 of 3

6. After 3.3

7. What protocol uses UDP ports 67 and 68? A.DNS B.SMTP C.Telnet D.DHCP E.FTP 1 of 5

8. Which DNS record is used to resolve a name like www.ccsf.edu to an IP address like 147.144.1.212,? A.A B.NS C.CNAME D.MX E.AAAA 2 of 5

9. What protocol uses GET, POST, and PUT methods? A.DNS B.SMTP C.HTTP D.DHCP E.FTP 3 of 5

10. What protocol uses TCP ports 20 and 21? A.DNS B.SMTP C.Telnet D.DHCP E.FTP 4 of 5

11. Which protocol can be used to move a file from a Unix server to a Windows client? A.SMB B.FTP C.HTTP D.SMTP E.All of the above 5 of 5

12. Lab Notes

13. Hands-on Labs Lab 3.4.1: Data Stream Capture Lab 3.4.1: Data Stream Capture You can do it at home if you have a microphone You can do it at home if you have a microphone Lab 3.4.2: Managing a Web server Lab 3.4.2: Managing a Web server You could do it at home, download apache from http://apache.org/ You could do it at home, download apache from http://apache.org/ Lab 3.4.3: E-mail Services and Protocols Lab 3.4.3: E-mail Services and Protocols Do it in the classroom or on NETLAB Do it in the classroom or on NETLAB

14. Binary Lesson 2 Bytes

15. Base Ten Normal Numbers Normal Numbers Each place has one of these values: Each place has one of these values: 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 147 = 1*100 + 4*10 + 7 147 = 1*100 + 4*10 + 7 Or 1*10^2 + 4*10^1 + 7*10^0 Or 1*10^2 + 4*10^1 + 7*10^0

16. Base Ten 1 4 71 4 71 4 71 4 7 Ones place Number of ones 10^0 Tens place Number of tens 10^1 Hundreds place Number of hundreds 10^2

17. Base Two Binary Numbers Binary Numbers Each place has one of these values: Each place has one of these values: 0 1 0 1 11 = 1 * 2 + 1 = 3 11 = 1 * 2 + 1 = 3 Or 1*2^1 + 2^0 Or 1*2^1 + 2^0

18. Base Two 1 0 11 0 11 0 11 0 1 Ones place Number of ones 2^0 Twos place Number of twos 2^1 Fours place Number of fours 2^2

19. Counting to 7 Base TwoBase Ten Base TwoBase Ten 0 0 0 0 1 1 1 1 10 2 10 2 11 3 11 3 100 4 100 4 101 5 101 5 110 6 110 6 111 7 111 7

20. Counting to 15 Base Two Base TenBase Two Base Ten Base Two Base TenBase Two Base Ten 0 0 1000 8 0 0 1000 8 1 1 1001 9 1 1 1001 9 10 2 1010 10 10 2 1010 10 11 3 1011 11 11 3 1011 11 100 4 1100 12 100 4 1100 12 101 5 1101 13 101 5 1101 13 110 6 1110 14 110 6 1110 14 111 7 1111 15 111 7 1111 15

21. Four Bits Make a Nybble 1 0 0 11 0 0 11 0 0 11 0 0 1 8s 4s2s1s

22. Eight Bits Make a Byte 1 0 0 1 1 0 0 1 So this number is 128 + 16 + 8 + 1 = 153 8s4s2s1s8s4s2s8s4s1s2s8s4s 16s32s 128s 64s16s32s64s16s32s

23. Binary iClicker Questions

24. What is 6 in binary? A.00111111 B.00011110 C.00000111 D.00000110 E.00000011 1 of 6

25. What is 15 in binary? A.00111111 B.00011111 C.00001111 D.00000111 E.00000011 2 of 6

26. What is 32 in binary? A.00011010 B.00100000 C.01000000 D.10000000 E.00011111 3 of 6

27. What is 60 in binary? A.11111111 B.10000011 C.00101111 D.00111101 E.00111011 4 of 6

28. What is 01000000 in decimal? A.10 B.100 C.128 D.64 E.32 5 of 6

29. What is 01111111 in decimal? A.87 B.109 C.111 D.127 E.255 6 of 6

30. Binary Lesson 3 Hexadecimal

31. Counting to 15 Base Base Base 16 Base Base Base 16 Two Ten (Hex) Two Ten (Hex) 0 0 0 1000 8 8 0 0 0 1000 8 8 1 1 1 1001 9 9 1 1 1 1001 9 9 10 2 2 1010 10 A 10 2 2 1010 10 A 11 3 3 1011 11 B 11 3 3 1011 11 B 100 4 4 1100 12 C 100 4 4 1100 12 C 101 5 5 1101 13 D 101 5 5 1101 13 D 110 6 6 1110 14 E 110 6 6 1110 14 E 111 7 7 1111 15 F 111 7 7 1111 15 F

32. Four Bits Make a Nybble 1 0 0 1 A nybble can be represented by one hexadecimal digit Values from 0 to 15, or 0 to F 8s 4s2s1s

33. Eight Bits Make a Byte 1 0 0 1 1 0 0 1 So this number is 128 + 16 + 8 + 1 = 153 8s4s2s1s8s4s2s8s4s1s2s8s4s 16s32s 128s 64s16s32s64s16s32s One nybble: 0 through F One nybble: 0 through F

34. Two hexadecimal digits make a byte 1 0 0 1 1 0 0 1 So this number is $99 = 9*16 + 9 = 144+9 = 153 One nybble: 0 through F # of 16s One nybble: 0 through F # of 1s

35. Binary iClicker Questions

36. What is 6 in hexadecimal? A.$0A B.$06 C.$60 D.$66 E.$A6 1 of 6

37. What is $15 in decimal? A.9 B.15 C.20 D.21 E.31 2 of 6

38. What is 32 in hexadecimal? A.$32 B.$20 C.$10 D.$24 E.$30 3 of 6

39. What is 63 in hexadecimal? A.$63 B.$60 C.$40 D.$3F E.$39 4 of 6

40. What is $F0 in decimal? A.15 B.150 C.255 D.240 E.224 5 of 6

41. What is $80 in decimal? A.80 B.100 C.128 D.192 E.224 6 of 6