CCENT 01

1. Class B: Network Bits & Host bits

8 NW bits, 24 Host Bits

16 NW Bits, 16 Host Bits

24 NW Bits, 8 Host Bits

2. What is Layer 2?

Data Link

Physical

Application

Presentation

3. Default network mask: 255.255.0.0 Default number of network bits: 16 Default number of host bits: 16

Class A

Class B

Class C

4. What is Layer 3?

Network

Data Link

Physical

Application

5. Default network mask: 255.255.255.0 Default number of network bits: 24 Default number of host bits: 8

Class A

Class B

Class C

6. Default network mask: 255.0.0.0 Default number of network bits: 8 Default number of host bits: 24

Class A

Class B

Class C

7. What is Layer 4?

Transport

Network

Data Link

Physical

8. What is Layer 1?

Physical

Application

Presentation

Session

9. Class C: Network Bits & Host bits

8 NW Bits, 24 Host Bits

16 NW Bits, 16 Host Bits

24 NW Bits, 8 Host Bits

10. Virtual circuits

Permanent virtual circuit

switch virtual circuit

Submit

11. Dynamic routing protocols:

RIP

IGRP

EIGRP

OSPF

Submit

12. What is Layer 5?

Session

Transport

Network

Data Link

13. HTTP port(s)

TCP 20

TCP 21

TCP 22

TCP 23

TCP 25

TCP 80

TCP 110

TCP 443

14. What is Layer 6?

Presentation

Session

Transport

Network

15. User mode

R>

R#

R(config)#

16. What is Layer 7?

Application

Presentation

Session

Transport

17. What is error detection?

Finding an error

Doing something about the error

18. What does the Transport Layer of the TCP/IP model cover on the OSI model?

Application

Presentation

Session

Transport

Network

Data Link

Physical

19. Class A: Network Bits & Host bits

8 NW Bits, 24 Host Bits

16 NW Bits, 16 Host Bits

24 Network Bits, 8 Host Bits

20. What is error recovery?

Finding an error

Doing something about the error

21. What does the Internetwork Layer of the TCP/IP model cover on the OSI model?

Application

Presentation

Session

Transport

Network

Data Link

Physical

22. Enable mode

R>

R#

R(config)#

Submit

24. Flash memory

Stores the router’s bootstrap startup program, operating system software, and power-on diagnostic test programs (POST).

Holds the router’s startup configuration file. contents are not lost when the router is powered down or reloaded.

25. Administrative Distance: Static

0

1

5

90

100

110

115

120

170

200

Submit

27. Ping & traceroute: !!!!!

IP connectivity to destination exists

IP connectivity to destination does not exist

The local router has a route to the destination, but a downstream router does not.

Submit

30. Administrative Distance: Directly Connected

0

1

5

90

100

110

115

120

170

200

31. Which side is the clockrate on?

DCE

DTE

Submit

33. Telnet port(s):

TCP 20

TCP 21

TCP 22

TCP 23

TCP 25

TCP 80

TCP 110

TCP 443

34. What does the Application Layer of the TCP/IP model cover on the OSI model?

Application

Presentation

Session

Transport

Network

Data Link

Physical

Submit

35. 10Base-T

IEEE 802.3

IEEE 802.3u

IEEE 802.3Z

IEEE 802.ab

36. POP3 port(s):

TCP 20

TCP 21

TCP 22

TCP 23

TCP 25

TCP 80

TCP 110

TCP 443

37. Random-Access Memory

Stores operational information such as routing tables and the running configuration file.

Holds the router’s startup configuration file. contents are not lost when the router is powered down or reloaded.

38. ROM

Stores the router’s bootstrap startup program, operating system software, and power-on diagnostic test programs (POST).

The IOS images are held here. Flash is erasable and reprogrammable ROM.

Stores operational information such as routing tables and the running configuration file.

Holds the router’s startup configuration file. contents are not lost when the router is powered down or reloaded.

39. NVRAM

Stores the router’s bootstrap startup program, operating system software, and power-on diagnostic test programs (POST).

Holds the router’s startup configuration file. contents are not lost when the router is powered down or reloaded.

40. VoIP port(s):

UDP 67

UDP 68

UDP 69

UDP 161

UDP 16384 - 32767

41. What are the characteristics to TCP?

Guaranteed delivery

Error detection via sequence and ACK numbers

Windowing

"connection-oriented"

"best-effort" delivery, but no guarantee of delivery

No error detection

No windowing

"connectionless"

Submit

42. SMTP port(s):

TCP 20

TCP 21

TCP 22

TCP 23

TCP 25

TCP 80

TCP 110

TCP 443

43. SNMP port(s):

UDP 67

UDP 68

UDP 69

UDP 161

UDP 16384 - 32767

44. What are the characteristics to UDP?

Guaranteed delivery

Error detection via sequence and ACK numbers

Windowing

"Connection-oriented"

"best-effort" delivery, but no guarantee of delivery

No error detection

No windowing

"Connectionless"

Submit

45. Ping and traceroute U.U.U

IP connectivity to destination exists

IP connectivity to destination does not exist

The local router has a route to the destination, but a downstream router does not.

46. TFTP port(s):

UDP 67

UDP 68

UDP 69

UDP 161

UDP 16384 - 32767

47. FTP port(s):

TCP 20

TCP 21

TCP 22

TCP 23

TCP 25

TCP 80

TCP 110

TCP 443

Submit

48. Common configuration register settings: 0x2102

The default. Router looks for a startup configuration file in NVRAM and for a valid IOS image in flash.

NVRAM contents are bypassed, startup configuration is ignored.

Router boots into ROM monitor mode.

49. SSL port(s):

TCP 20

TCP 21

TCP 22

TCP 23

TCP 25

TCP 80

TCP 110

TCP 443

50. Common configuration register settings: 0x2100

The default. Router looks for a startup configuration file in NVRAM and for a valid IOS image in flash.

NVRAM contents are bypassed, startup configuration is ignored.

Router boots into ROM monitor mode.

51. Ping and traceroute .....

IP connectivity to destination exists

IP connectivity to destination does not exist

The local router has a route to the destination, but a downstream router does not.

52. Administrative Distance: Internal EIGRP

0

1

5

90

100

110

115

120

170

200

53. Administrative Distance: OSPF

0

1

5

90

100

110

115

120

170

200

54. SSH port(s):

TCP 20

TCP 21

TCP 23

TCP 25

TCP 80

TCP 110

TCP 443

TCP 22

55. Administrative Distance: RIP

0

1

5

90

100

110

115

120

170

200

56. DNS port(s):

UDP 53

TCP 53

UDP & TCP 53

UDP 24

TCP 24

UDP & TCP 24

57. Common configuration register settings: 0x2142

The default. Router looks for a startup configuration file in NVRAM and for a valid IOS image in flash.

NVRAM contents are bypassed, startup configuration is ignored.

Router boots into ROM monitor mode.

58. DHCP port(s):

UDP 67

UDP 68

UDP 69

UDP 161

UDP 16384 - 32767

Submit

59. Administrative Distance: ISIS

0

1

5

90

100

110

115

120

170

200

60. Administrative Distance: iBGP

0

1

5

90

100

110

115

120

170

200

61. What does the Network Interface of the TCP/IP model cover on the OSI model?

Application

Presentation

Session

Transport

Network

Data Link

Physical

Submit

62. Fast ethernet

IEEE 802.3

IEEE 802.3u

IEEE 802.3z

IEEE 802.3ab

63. Privilege mode

R>

R#

R(config)#

64. Administrative Distance: External EIGRP

0

1

5

90

100

110

115

120

170

200

65. Administrative Distance: IGRP

0

1

5

90

100

110

115

120

170

200

66. Administrative Distance: EIGRP Summary

0

1

5

90

100

110

115

120

170

200

67. Gigabit ethernet

IEEE 802.3

IEEE 802.3u

IEEE 802.3z

IEEE 802.ab

Submit

CCENT 01

1. Class B: Network Bits & Host bits

2.

What first name or nickname would you like us to use?

2. What is Layer 2?

3. Default network mask: 255.255.0.0 Default number of network bits: 16 Default number of host bits: 16

4. What is Layer 3?

5. Default network mask: 255.255.255.0 Default number of network bits: 24 Default number of host bits: 8

6. Default network mask: 255.0.0.0 Default number of network bits: 8 Default number of host bits: 24

7. What is Layer 4?

8. What is Layer 1?

9. Class C: Network Bits & Host bits

10. Virtual circuits

11. Dynamic routing protocols:

12. What is Layer 5?

13. HTTP port(s)

14. What is Layer 6?

15. User mode

16. What is Layer 7?

17. What is error detection?

18. What does the Transport Layer of the TCP/IP model cover on the OSI model?

19. Class A: Network Bits & Host bits

20. What is error recovery?

21. What does the Internetwork Layer of the TCP/IP model cover on the OSI model?

22. Enable mode

23. Class C range:

24. Flash memory

25. Administrative Distance: Static

26. Class E range:

27. Ping & traceroute: !!!!!

28. Class B range:

29. Class A range:

30. Administrative Distance: Directly Connected

31. Which side is the clockrate on?

32. Class D range:

33. Telnet port(s):

34. What does the Application Layer of the TCP/IP model cover on the OSI model?

35. 10Base-T

36. POP3 port(s):

37. Random-Access Memory

38. ROM

39. NVRAM

40. VoIP port(s):

41. What are the characteristics to TCP?

42. SMTP port(s):

43. SNMP port(s):

44. What are the characteristics to UDP?

45. Ping and traceroute U.U.U

46. TFTP port(s):

47. FTP port(s):

48. Common configuration register settings: 0x2102

49. SSL port(s):

50. Common configuration register settings: 0x2100

51. Ping and traceroute .....

52. Administrative Distance: Internal EIGRP

53. Administrative Distance: OSPF

54. SSH port(s):

55. Administrative Distance: RIP

56. DNS port(s):

57. Common configuration register settings: 0x2142

58. DHCP port(s):

59. Administrative Distance: ISIS

60. Administrative Distance: iBGP

61. What does the Network Interface of the TCP/IP model cover on the OSI model?

62. Fast ethernet

63. Privilege mode

64. Administrative Distance: External EIGRP

65. Administrative Distance: IGRP

66. Administrative Distance: EIGRP Summary

67. Gigabit ethernet