1. What combination of IP address and wildcard mask should
be used to specify only the last 8 addresses in the subnet 192.168.3.32/28?
192.168.3.40 0.0.0.7
2. Excessive broadcasts are generally a symptom of a problem
at which layer?
Data link
3. Refer to the exhibit. Which three pieces of information
can be determined by analyzing the output shown? (Choose three.)
A carrier detect signal is present.
Keepalives are being received successfully.
The LCP negotiation phase is complete.
4. A network administrator has received complaints that
users on a local LAN can retrieve e-mail from a remote e-mail server but are
unable to open web pages on the same server. Services at which two layers of
the OSI model should be investigated during the troubleshooting process?
(Choose two.)
Transport layer
Application layer
5. When gathering symptoms for troubleshooting a network
problem, which step could result in getting an external administrator involved
in the process?
determining ownership
6. Encapsulation errors from mismatched WAN protocols on a
serial link between two routers indicate a problem at which OSI layer?
Data link
7. Refer to the exhibit. Users at Branch B are reporting
trouble accessing a corporate website running on a server that is located at
HQ. HQ and Branch A users can access the website. R3 is able to ping 10.10.10.1
successfully but not 10.10.10.2. The users at Branch B can access servers at
Branch A. Which two statements are true about the troubleshooting efforts? (Choose
two.)
Frame Relay at R3 and R2 should be tested to narrow the
scope of the problem.
An ACL entry error could cause the failure at Layer 4 in
either R3 or R2.
8. Which troubleshooting approach is suggested for dealing
with a complex problem that is suspected of being caused by faulty network
cabling?
Bottom up
9. Users are complaining of very long wait times to access
resources on the network. The show interface command reveals collision counts
far above the network baseline. At which OSI layer should the administrator
begin troubleshooting?
Physical
10. Refer to the exhibit. Users on the Internal LAN are
unable to connect to the www server. The network administrator pings the server
and verifies that NAT is functioning correctly. Which OSI layer should the
administrator begin to troubleshoot next?
Application
11. Which two statements are true concerning logical
networking models? (Choose two.)
TCP/IP splits the lowest layer of the OSI model into two
separate layers.
The top layer of the TCP/IP model combines the functions of
the top three OSI layers.
The TCP/IP network access layer corresponds to the OSI
physical and data link layers.
12. Refer to the exhibit. Which two steps should be taken
during the process of creating network documentation? (Choose two.)
Record the information about the devices discovered in the
entire network, including the remote locations.
Transfer any information about the devices from the network
configuration table that corresponds to a component of the topology diagram.
13. What is one example of a physical layer problem?
Incorrect clock rate
14. Clients across the company are reporting poor
performance across all corporate applications running in the data center.
Internet access and applications running across the corporate WAN are
performing normally. The network administrator observes a continual broadcast
of random meaningless traffic (jabber) on the application server LAN in the
data center on a protocol analyzer. How should the administrator start
troubleshooting?
The jabber in the data center indicates a local physical
layer problem. Use the protocol analyzer to determine the source of the jabber,
and then check for a recent NIC driver update or bad cabling.
15. A technician has been asked to make several changes to
the configuration and topology of a network and then determine the outcome of
the changes. What tool can be used to determine the overall effect caused by
the changes?
Baselining tool
16. A technician has been asked to troubleshoot an existing
switched network but is unable to locate documentation for the VLAN
configuration. Which troubleshooting tool allows the technician to map and
discover VLAN and port assignments?
Network analyzer
17. Which two pieces of information are typically found on a
logical network diagram? (Choose two.)
Interface identifiers
DLCI for virtual circuits
18. Which two components should be taken into consideration
when establishing a network baseline? (Choose two.)
Information about the network design
Expected performance under normal operating conditions
19. Which three approaches should be used when attempting to
gather data from users for troubleshooting? (Choose three.)
Obtain information by asking simple pertinent questions.
Determine if the problem is related to time or a specific
event.
Determine if the user can re-create the problem or events
leading to the problem.
20. Information about which OSI layers of connected Cisco
devices can be verified with the show cdp neighbors command?
Layer 1, Layer 2, and Layer 3
CCNA 4 Chapter 8 Answers |
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