CCNA Dumps Part4

Hi guy's i know you are so much interested in CCNA Certification and i hope this will help you to prepare to became a CCNA certified.

1. On a VLSM network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?
A. /27
B. /28
C. /29
D. /30
E. /31

2. To test the IP stack on your local host, which IP address would you ping?
A. 127.0.0.0
B. 1.0.0.127
C. 127.0.0.1
D. 127.0.0.255
E. 255.255.255.255

3. What is the only connection type that supports the use of the /30 mask?
A. Point-to-multipoint
B. Point-to-point
C. Multipoint-to-multipoint
D. Host to switch

4. To use VLSM, what capability must the routing protocols in use possess?
A. Support for multicast
B. Multi-protocol support
C. Transmission of subnet mask information
D. Support for unequal load balancing

5. What is another term for route aggregation?
A. VLSM
B. Load balancing
C. Subnetting
D. Summarization

6. Which of the following is a result of route aggregation?
A. Smaller routing tables
B. More complete routing tables
C. Increased memory usage
D. Increased CPU usage

7. The network address used to advertise a summary address is always which of the following?
A. The last network address in the block
B. The next to last network in the block
C. The second network in the block
D. The first network in the block

8. When a ping to the loopback address fails, what can you assume?
A. The IP address of the local host is incorrect.
B. The IP address of the remote host is incorrect.
C. The NIC is not functional.
D. The IP stack has failed to initialize.

9. When a ping to the local host IP address fails, what can you assume?
A. The IP address of the local host is incorrect.
B. The IP address of the remote host is incorrect.
C. The NIC is not functional.
D. The IP stack has failed to initialize.

10. When a ping to the local host IP address succeeds but a ping to the default gateway IP address fails, what can you rule out? (Choose all that apply.)
A. The IP address of the local host is incorrect.
B. The IP address of the gateway is incorrect.
C. The NIC is not functional.
D. The IP stack has failed to initialize.

11. If a remote host can be pinged, what problems can you rule out?
A. The IP address of the local host is incorrect.
B. The IP address of the gateway is incorrect.
C. The NIC is not functional.
D. The IP stack has failed to initialize.
E. All of the above.

12. What network service is the most likely problem if you can ping a computer by IP address but not by name?
A. DNS
B. DHCP
C. ARP
D. ICMP

13. When you issue the ping command, what protocol are you using?
A. DNS
B. DHCP
C. ARP
D. ICMP

14. Which of the following commands displays the networks traversed on a path to a network destination?
A. ping
B. traceroute
C. pingroute
D. pathroute

15. Which of the following commands uses ICMP echo requests and replies?
A. ping
B. traceroute
C. arp
D. tracert

16. What command is the Windows version of the Cisco command that displays the networks traversed on a path to a network destination?
A. ping
B. traceroute
C. arp
D. tracert

17. Which command displays IP-to-MAC-address mappings on a Windows PC?
A. ping
B. traceroute
C. arp -a
D. tracert

18. What command displays the ARP table on a Cisco router?
A. show ip arp
B. traceroute
C. arp -a
D. tracert

19. What switch must be added to the ipconfig command on a PC to verify DNS configuration?
A. /dns
B. -dns
C. /all
D. -all

20. Which of the following is the best summarization of the following networks: 192.168.128.0 through 192.168.159.0
A. 192.168.0.0/24
B. 192.168.128.0/16
C. 192.168.128.0/19
D. 192.168.128.0/20

21. Which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?
A. /27
B. /28
C. /29
D. /30
E. /31

22. What is the subnetwork number of a host with an IP address of 172.16.66.0/21?
A. 172.16.36.0
B. 172.16.48.0
C. 172.16.64.0
D. 172.16.0.0

23. You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?
A. 6
B. 8
C. 30
D. 62
E. 126

24. You need to configure a server that is on the subnet 192.168.19.24/29. The router has the first available host address. Which of the following should you assign to the server?
A. 192.168.19.0 255.255.255.0
B. 192.168.19.33 255.255.255.240
C. 192.168.19.26 255.255.255.248
D. 192.168.19.31 255.255.255.248
E. 192.168.19.34 255.255.255.240

25. You have an interface on a router with the IP address of 192.168.192.10/29. What is the broadcast address the hosts will use on this LAN?
A. 192.168.192.15
B. 192.168.192.31
C. 192.168.192.63
D. 192.168.192.127
E. 192.168.192.255

26. You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?
A. 255.255.255.192
B. 255.255.255.224
C. 255.255.255.240
D. 255.255.255.248

27. You configure a router interface with the IP address 192.168.10.62 255.255.255.192 and receive the following error:Bad mask /26 for address 192.168.10.62, Why did you receive this error?
A. You typed this mask on a WAN link and that is not allowed.
B. This is not a valid host and subnet mask combination.
C. ip subnet-zero is not enabled on the router.
D. The router does not support IP.

28. If an Ethernet port on a router were assigned an IP address of 172.16.112.1/25, what would be the valid subnet address of this interface?
A. 172.16.112.0
B. 172.16.0.0
C. 172.16.96.0
D. 172.16.255.0
E. 172.16.128.0

29. Using the illustration from the previous question, what would be the IP address of S0 if you were using the first subnet? The network ID is 192.168.10.0/28 and you need to use the last available IP address in the range. Again, the zero subnet should not be considered valid for this question.
A. 192.168.10.24
B. 192.168.10.62
C. 192.168.10.30
D. 192.168.10.127

30. Which configuration command must be in effect to allow the use of 8 subnets if the Class C subnet mask is 255.255.255.224?
A. Router(config)#ip classless
B. Router(config)#ip version 6
C. Router(config)#no ip classful
D. Router(config)#ip unnumbered
E. Router(config)#ip subnet-zero
F. Router(config)#ip all-nets

31. You have a network with a subnet of 172.16.17.0/22. Which is the valid host address?
A. 172.16.17.1 255.255.255.252
B. 172.16.0.1 255.255.240.0
C. 172.16.20.1 255.255.254.0
D. 172.16.16.1 255.255.255.240
E. 172.16.18.255 255.255.252.0
F. 172.16.0.1 255.255.255.0

32. Your router has the following IP address on Ethernet0: 172.16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router? (Choose two.)
A. 172.16.0.5
B. 172.16.1.100
C. 172.16.1.198
D. 172.16.2.255
E. 172.16.3.0
F. 172.16.3.255

33. To test the IP stack on your local host, which IP address would you ping?
A. 127.0.0.0
B. 1.0.0.127
C. 127.0.0.1
D. 127.0.0.255
E. 255.255.255.255

34. Which of the following connection methods available to connect to a router is considered out-of-band?
A. Serial port
B. VTY port
C. HTTP port
D. Aux port

35. Which two of the following commands are required when configuring SSH on your router?
A. enable secret password
B. exec-timeout 0 0
C. ip domain-name name
D. username name password password
E. ip ssh version 2

36. Which command will show you whether a DTE or a DCE cable is plugged into serial 0?
A. sh int s0
B. sh int serial 0
C. show controllers s 0
D. show serial 0 controllers

37. Which of the following is a correct combination of file type and default location in a Cisco router?
A. IOS/NVRAM
B. Startup configuration/flash memory
C. IOS/flash memory
D. Running configuration/NVRAM

38. You set the console password, but when you display the configuration, the password doesn’t show up; it looks like this:
[output cut]
Line console 0
Exec-timeout 1 44
Password 7 09FGH68QR
Login
[output cut]
What command would configure the password to be stored this way?
A. encrypt password
B. service password-encryption
C. service-password-encryption
D. exec-timeout 1 22

39. Which of the following commands will configure all the default VTY ports on a router?
A. Router#line vty 0 4
B. Router(config)#line vty 0 4
C. Router(config-if)#line console 0
D. Router(config)#line vty all

40. Which of the following commands sets the secret password to Kamal?
A. enable secret password Kamal
B. enable secret kamal
C. enable secret Kamal
D. enable password Kamal

41. If you wanted administrators to see a message when logging into the router, which command would you use?
A. message banner motd
B. banner message motd
C. banner motd
D. message motd

42. What command do you type to save the configuration stored in RAM to NVRAM?
A. Router(config)#copy current to starting
B. Router#copy starting to running
C. Router(config)#copy running-config startup-config
D. Router#copy run start

43. You try to telnet into SRouter from router Corp and receive this message:
Corp#telnet SRouter
Trying SRouter (10.0.0.1)…Open
Password required, but none set
[Connection to SRouter closed by foreign host]
Corp#
Which of the following sequences will address this problem correctly?
A. Corp(config)#line console 0
Corp (config-line)#password password
Corp (config-line)#login
B. SRemote(config)#line console 0
Corp (config-line)#enable secret password
Corp (config-line)#login
C. Corp(config)#line vty 0 4
Corp (config-line)#password password
Corp (config-line)#login
D. SRemote(config)#line vty 0 4
Corp (config-line)#password password
Corp (config-line)#login

44. Which command will delete the contents of NVRAM on a router?
A. delete NVRAM
B. delete startup-config
C. erase NVRAM
D. erase start

45. What is the problem with an interface if you type show interface serial 0 and receive the following message?
Serial0 is administratively down, line protocol is down
A. The keepalives are different times.
B. The administrator has the interface shut down.
C. The administrator is pinging from the interface.
D. No cable is attached.

46. Which of the following commands displays the configurable parameters and statistics of all interfaces on a router?
A. show running-config
B. show startup-config
C. show interfaces
D. show versions

47. If you delete the contents of NVRAM and reboot the router, what mode will you be in?
A. Privileged mode
B. Global mode
C. Setup mode
D. NVRAM loaded mode

48. You type the following command into the router and receive the following output:
Router#show serial 0/0
^
% Invalid input detected at '^' marker.
Why was this error message displayed?
A. You need to be in privileged mode.
B. You cannot have a space between serial and 0/0.
C. The router does not have a serial0/0 interface.
D. Part of the command is missing.

49. Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface? (Choose two.)
A. show version
B. show interfaces
C. show controllers
D. show ip interface
E. show running-config

50. At which layer of the OSI model would you assume the problem is if you type show interface serial 1 and receive the following message?
Serial1 is down, line protocol is down
A. Physical layer
B. Data Link layer
C. Network layer
D. None; it is a router problem

OK Now it's time to check your answer and get score, if your score is below than 80% i will recommend to retake your test.

1. D. A point-to-point link uses only two hosts. A /30, or 255.255.255.252, mask provides two hosts per subnet.

2. C. To test the local stack on your host, ping the loopback interface of 127.0.0.1.

3. B. The only connection type that supports the use of the /30 mask is point-to-point.

4. C. To use VLSM, the routing protocols in use possess the capability to transmit subnet mask information.

5. D. Another term for route aggregation is summarization.

6. A. Route aggregation results in smaller routing tables.

7. D. The network address used to advertise a summary address is always the first network in the block.

8. D. When a ping to the loopback address fails, you can assume the IP stack has failed to initialize.

9. C. When a ping to the local host IP address fails, you can assume the NIC is not functional.

10. C, D. If a ping to the local host succeeds, you can rule out IP stack or NIC failure.

11. E. If you can ping a remote host, everything is working locally.

12. A. The most likely problem if you can ping a computer by IP address but not by name is a failure of DNS.

13. D. When you issue the ping command, you are using the ICMP protocol.

14. B. The traceroute command displays the networks traversed on a path to a network destination.

15. A. The ping command uses ICMP echo requests and replies.

16. D. tracert is the Windows version of the Cisco command that displays the networks traversed on a path to a network destination.

17. C. The arp -a command displays IP-to-MAC-address mappings on a Windows PC.
18. A. The command that displays the ARP table on a Cisco router is show ip arp.

19. C. The /all switch must be added to the ipconfig command on a PC to verify DNS configuration.
20. C. If you start at 192.168.128.0 and go through 192.168.159.0, you can see this is a block of 32 in the third octet. Since the network address is always the first one in the range, the summary address is 192.168.128.0. What mask provides a block of 32 in the third octet? The answer is 255.255.224.0, or /19

21. D. A point-to-point link uses only two hosts. A /30, or 255.255.255.252, mask provides two hosts per subnet.

22. C. A /21 is 255.255.248.0, which means we have a block size of 8 in the third octet, so we just count by 8 until we reach 66. The subnet in this question is 64.0. The next subnet is 72.0, so the broadcast address of the 64 subnet is 71.255.

23. A. A /29 (255.255.255.248), regardless of the class of address, has only 3 host bits. Six hosts is the maximum number of hosts on this LAN, including the router interface.

24. C. A /29 is 255.255.255.248, which is a block size of 8 in the fourth octet. The subnets are 0, 8, 16, 24, 32, 40, etc. 192.168.19.24 is the 24 subnet, and since 32 is the next subnet, the broadcast address for the 24 subnet is 31. 192.168.19.26 is the only correct answer.

25. A. A /29 (255.255.255.248) has a block size of 8 in the fourth octet. This means the subnets are 0, 8, 16, 24, etc. 10 is in the 8 subnet. The next subnet is 16, so 15 is the broadcast address.

26. B. You need 5 subnets, each with at least 16 hosts. The mask 255.255.255.240 provides 16 subnets with 14 hosts—this will not work. The mask 255.255.255.224 provides 8 subnets, each with 30 hosts. This is the best answer.

27. C. First, you cannot answer this question if you can’t subnet. The 192.168.10.62 with a mask of 255.255.255.192 is a block size of 64 in the fourth octet. The host 192.168.10.62 is in the zero subnet, and the error occurred because ip subnet-zero is not enabled on the router.

28. A. A /25 mask is 255.255.255.128. Used with a Class B network, the third and fourth octets are used for subnetting with a total of 9 subnet bits, 8 bits in the third octet and 1 bit in the fourth octet. Since there is only 1 bit in the fourth octet, the bit is either off or on—which is a value of 0 or 128. The host in the question is in the 0 subnet, which has a broadcast address of 127 since 112.128 is the next subnet.

29. C. A /28 is a 255.255.255.240 mask. The first subnet is 16 (remember that the question stated not to use subnet zero) and the next subnet is 32, so our broadcast address is 31. This makes our host range 17–30. 30 is the last valid host.

30. E. A Class C subnet mask of 255.255.255.224 is 3 bits on and 5 bits off (11100000) and provides 8 subnets, each with 30 hosts. However, if the command ip subnet-zero is not used, then only 6 subnets would be available for use.

31. E. A Class B network ID with a /22 mask is 255.255.252.0, with a block size of 4 in the third octet. The network address in the question is in subnet 172.16.16.0 with a broadcast address of 172.16.19.255. Only option E has the correct subnet mask listed, and 172.16.18.255 is a valid host.

32. D, E. The router’s IP address on the E0 interface is 172.16.2.1/23, which is 255.255.254.0. This makes the third octet a block size of 2. The router’s interface is in the 2.0 subnet, and the broadcast address is 3.255 because the next subnet is 4.0. The valid host range is 2.1 through 3.254. The router is using the first valid host address in the range.

33. C. To test the local stack on your host, ping the loopback interface of 127.0.0.1.

34. D. The auxiliary port can be configured with modem commands so that a modem can be connected to the router. It lets you dial up a remote router and attach to the auxiliary port if the router is down and you need to configure it out-of-band (means out of the network).

35. C, D. To configure SSH on your router, you need to set the username command, the ip domain-name, login local, and the transport input ssh under the VTY lines, and the crypto key command. However, SSH version 2 is not required, but suggested.

36. C. The show controllers serial 0 command will show you whether either a DTE or DCE cable is connected to the interface. If it is a DCE connection, you need to add clocking with the clock rate command.

37. C. The default locations of the files are IOS in flash memory, startup configuration in NVRAM, and running configuration in RAM.

38. B. The command service password-encryption, from global configuration mode, will encrypt the passwords.

39. B. From global configuration mode, use the line vty 0 4 command to set all five default VTY lines.

40. C. The enable secret password is case sensitive, so the second option is wrong. To set the enable secret password, use the enable secret password command from global configuration mode.

41. C. The typical banner is a message of the day (MOTD) and is set by using the global configuration mode command banner motd.

42. D. To copy the running-config to NVRAM so that it will be used if the router is restarted, use the copy running-config startup-config command in privileged mode (copy run start for short).

43. D. To allow a VTY (Telnet) session into your router, you must set the VTY password. Option C is wrong because it is setting the password on the wrong router. Notice that the answers you have to set the password before you set the login command. Remember, Cisco may have you set the password before the login command.

44. D. The erase startup-config command erases the contents of NVRAM and will put you in setup mode if the router is restarted.

45. B. If an interface is shut down, the show interface command will show the interface as administratively down. (It is possible that no cable is attached, but you can’t tell that from this message.)

46. C. With the show interfaces command, you can view the configurable parameters, get statistics for the interfaces on the router, verify if the interfaces are shut down, and see the IP address of each interface.

47. C. If you delete the startup-config and reload the router, the router will automatically enter setup mode. You can also type setup from privileged mode at any time.

48. D. You can view the interface statistics from user mode, but the command is show interface serial 0/0.

49. B, D. The commands show interfaces and show ip interface will show you the layer 1 and 2 status and the IP addresses of your router’s interfaces.

50. A. If you see that a serial interface and the protocol are both down, then you have a Physical layer problem. If you see serial1 is up, line protocol is down, then you are not receiving (Data Link) keepalives from the remote end.