Selasa, 28 April 2009

chapter 9 discovery ccna2

1. How many usable host addresses does the 192.168.1.0/25 subnet provide?
254
128
127
126
64
62
2. A network technician has isolated a problem at the transport layer of the OSI
model. Which question would provide further information about the problem?

Do you have a firewall that is configured on your PC?
Do you have a link light on your network card?
Is your PC configured to obtain addressing information using DHCP?
What default gateway address is configured in your TCP/IP settings?
Can you ping http://www.cisco.com?
3. Refer to the exhibit. A network administrator is in the process of sending a
preconfigured text file to a router. When the administrator pastes the
configuration into the router, an error message appears. What is the problem with
the IP addressing scheme?

Serial0/0 is configured with a network address.
The IP address on FastEthernet0/0 overlaps with the IP on FastEthernet0/1.
Serial0/1 is configured with a broadcast address.
The IP address on FastEthernet0/0 overlaps with the IP on Serial0/1.
4. A user can access any web page on the Internet but cannot access e-mail. What
troubleshooting method would be most efficient for troubleshooting this issue?

top-down
bottom-up
divide-and-conquer
impossible to determine from this information
5. Refer to the exhibit. What are two possible causes for the interface status?
(Choose two.)

The loopback address is not set.
The encapsulation type is mismatched.
A cable is not attached to the interface.
Keepalive messages are not being received.
The interface is administratively shut down.
6. Refer to the exhibit. Host H1 on the LAN is not able to access the FTP server
across the Internet. Which two configuration statements are causing this problem?
(Choose two.)

There is no route to the Internet.
The IP address on Fa0/0 is incorrect.
The IP address on S0/0/0 is incorrect.
The NAT command on the Fa0/0 interface is applied in the wrong direction.
The NAT command on the S0/0/0 interface is applied in the wrong direction.

7. Which two conditions identify issues that are confined to Layer 1? (Choose two.)
cables that exceed maximum length
encapsulation errors
viruses and worms that create excessive broadcast traffic
poor termination of cables
receiving "line protocol down" messages on the router console
8. A network administrator is upgrading a Cisco 1841 router by adding a WIC-2T module
card. Which show command can the administrator use to verify that the module is
correctly recognized by the router?

show flash:
show version
show ip route
show startup-configuration
9. Hosts on two separate subnets cannot communicate. The network administrator
suspects a missing route in one of the routing tables. Which three commands can be
used to help troubleshoot Layer 3 connectivity issues? (Choose three.)

ping
show arp
traceroute
show ip route

show controllers
show cdp neighbor
10. Refer to the exhibit. Which statement is true regarding the IP address
configuration?

Interfaces Fa0/0 and Fa0/1 can be in the same subnet.
Interface Fa0/0 and NetworkA can be in the same subnet.
Interface Fa0/0 and NetworkB can be in the same subnet.
Interface Fa0/1 and NetworkB can be in the same subnet.
11. A network administrator plugs a new PC into a switch port. The LED for that port
changes to solid green. What statement best describes the current status of the
port?

There is a duplex mismatch error.
There is a link fault error. This port is unable to forward frames.
The port is operational and ready to transmit packets.
This port has been disabled by management and is unable to forward frames.
The flash memory is busy.
12. Refer to the exhibit. Which three statements are true about the output of the show
ip interface brief command? (Choose three.)

FastEthernet0/0 is functioning correctly.
The shutdown command has been applied on Serial0/0.
FastEthernet0/0 was configured by the startup-config at bootup.
Serial0/0 is experiencing a Layer 1 network problem.
FastEthernet0/1 is experiencing a Layer 2 network problem.
Because the port is down, Serial0/1 has an IP address that does not show in
the output.
13. Refer to the exhibit. Users on the 10.12.10.0/24 network are unable to access
anyone on the 10.10.10.0/24 network. What two problems exist in the network?
(Choose two.)

R2 is using a different version of RIP.
R2 has a missing network statement.

R1 has an incorrect network statement.
R3 has an incorrect network statement.
A routing loop is occurring between all three routers.


14. Refer to the exhibit. The PC is trying to ping router B at 192.168.2.2, but it
fails. What is the problem?

The PC is on the wrong subnet.
The default gateway on the PC should be 192.168.1.1.
The default gateway should be 192.168.2.2.
The DNS server is incorrect.
The IP address for Fa0/0 on router A is incorrect.
15. An administrator is creating a lab to simulate a WAN connection. During the setup,
the administrator notices that there are different encapsulation types on each end
of the serial connection. At what layer of the OSI model is this problem
occurring?

Layer 2
Layer 4
Layer 5
Layer 6
16. !!!Warning!!! this question is not included:Refer to the exhibit. A router initially boots up to ROMMON mode. The administrator enters the dir flash: command and sees the output that is shown. What should the administrator do next?
Load a new IOS onto the router by the use of TFTP.
Load a new IOS onto the router via XMODEM.
Boot the router using the reset command in ROMMON.
Erase the file in flash and reboot the router.

but this one is
No one of buiseness can access to a web sites. Admin has checked all cable conections and entered command nslookup. What will be the result of this request?(something like that, don’t remember exactly)
DNS Failure..


17. A PC is able to reach devices that are located both inside and outside the
network. However, when trying to reach an FTP server that is located on the same
subnet, the PC fails to make a connection. The administrator has several other PCs
that are located in the same subnet try a connection to the FTP server and they
are successful. Which troubleshooting tool can be used to determine the problem
between the PC and the FTP server?

cable tester
digital multimeter
protocol analyzer
network analyzer
18. Refer to the exhibit. Which IP address is misconfigured and is causing
connectivity problems between hosts and servers?

HostA
HostB
Server1
Server2
R1 Fa0/0
R1 Fa0/1
19. Which problem is associated with Layer 4 of the OSI model?
A firewall is blocking Telnet packets to a host.
A host has an incorrect IP address.
A router has no route to a host.
A host sent a malformed HTTP request.
20. A user is having trouble accessing the Internet. A network administrator begins by
verifying that the IP address of the PC is correctly configured. Next the
administrator pings the default gateway. Based on this information, what type of
troubleshooting method is the administrator employing?

top-down
bottom-up
divide-and-conquer
impossible to determine from this information

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