CCNA Discovery Answers, CCNA 4.1 Answers, CCNA Discovery 4.0 Answers, CCNA Discovery 4.1 Answers, CCNA 4.1 Answer Chapter 1, CCNA 4.1 Answer Chapter 2, CCNA 4.1 Answer Chapter 3, CCNA 4.1 Answer Chapter 4, CCNA 4.1 Answer Chapter 5, CCNA 4.1 Answer Chapter 6, CCNA 4.1 Answer Chapter 7, CCNA 4.1 Answer Chapter 8, CCNA 4.1 Answer Chapter 9

1. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
CCNA 3 Chapter 9 V4.0
Labels: CCNA 3 Chapter 9 V4.0
1

2. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
Refer to the exhibit. Based on the output shown, to which IP network should the
workstations in the Support department belong?
192.168.1.0
172.16.1.0
172.16.3.0
172.16.5.0
2

3. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
Refer to the exhibit. A network administrator is doing proactive network maintenance.
The administrator pings 192.168.1.100 and compares the results to the baseline data.
Based on the comparison of the two pings, what is one possibility?
There is an ACL applied, making the destination host unreachable.
There is a malfunctioning NIC on the destination host.
The sending host is unable to access the network.
There are congestion problems on the network.
3
Refer to the exhibit. Given the output generated by the debug ppp negotiation
command, which statement is true?

4. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
The line protocol of the local router is now up.
The username ’Goleta’ is configured locally.
The command ppp authentication pap is configured on both routers.
The local router requested to terminate the session.
4
What is important to consider while configuring the subinterfaces of a router when
implementing inter-VLAN routing?
The subinterface numbers must match the VLAN ID number.
The physical interface must have an IP address configured.
The IP address of each subinterface must be the default gateway address for each
VLAN subnet.
The no shutdown command must be given on each subinterface.
5
Refer to the exhibit. A lab technician connects two routers together via a serial cable
using the default interface configuration values. The interfaces are up; however, the
technician is unable to ping between the two devices. What is the most likely
problem?
The lab technician used the wrong cable to connect the serial ports.
There is an IP mismatch between the serial ports.

5. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
There is an encapsulation mismatch between the serial ports.
No clock rate has been set on the DCE interface.
6
Refer to the exhibit. Based on the output shown, why is VTP information unable to
propagate the network?
One of the two client mode switches must be reconfigured to Transparent mode.
Each switch must be synchronized to the network time server.
The VTP domain names are different.
VTP passwords must be set.
The configuration revision numbers are all the same.

6. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
7
The enterprise mail server software recently went through a minor update. A network
administrator notices an excessive amount of traffic between a database server and the
newly updated mail server, compared to the baseline data. What is the first action the
administrator should do to investigate the problem?
Wait to see if the recent update will stabilize after a while.
Redo the baseline data to include the minor upgrade.
Check the log to see what software components are producing the excess traffic.
Check for viruses and spyware on the database server.
8
Refer to the exhibit. Users are reporting that they cannot access the Internet. Routers
R1 and R2 are configured with RIP version 2 as shown. If R2 receives a packet with a
destination address on the Internet, how is the packet routed?
The packet is routed to the ISP router and then to network 10.1.1.0/24.
The packet is routed to the ISP router and then to the Internet.

7. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
The packet is routed to R1 and then forwarded out Fa0/0 on R1.
The packet will not be routed because R2 does not have a valid default route.
9
Refer to the exhibit. Both routers are configured using RIPv1. Both routers are
sending updates about the directly connected routes. R1 can successfully ping the
serial interface of R2. The routing table on R1 does not contain any dynamically
learned routes from R2, and the routing table on R2 shows no dynamically learned
routes from R1. What is the problem?
Subnetting is not supported by RIPv1.
One of the routers needs a clock rate on the serial interface.

8. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
The serial link between the two routers is unstable.
VLSM is not supported by RIPv1.
10
Refer to the exhibit. Host 192.168.1.14 is unable to download email from
192.168.2.200. After reviewing the output of the show running-config command,
what problem is discovered?
Access to the SMTP server is denied.
The destination host address in an ACL statement is incorrect.

9. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
The ACL is applied to the interface in the wrong direction.
The implicit deny any any is blocking all access to email.
11
An employee called the help desk to report a laptop that could not access a web-based
application on the Internet. The help desk technician asked the employee to open a
Windows command prompt and type the ipconfig /all command. Which problem-
solving technique did the technician choose?
top-down
bottom-up
substitution
divide-and-conquer
12

10. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
Refer to the exhibit. Based on the network diagram and the output shown, which
statement is true?
The command was entered on router R1.
The command was entered on router R2.
The command was entered on router R3.
The command could have been entered on either R1 or R2.
13

11. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
Refer to the exhibit. An ACL is configured to prevent access by network 192.168.1.0
to network 192.168.2.0, but it is not working properly. What problem is discovered
after observing the output of the show running-config command?
The protocol type specified in the ACL should be TCP, not IP.
The source and destination addresses are reversed in the statement.

12. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
The ACL is applied to the wrong interface, but the right direction.
The ACL is applied to the wrong interface and the wrong direction.
The permit ip any any statement allows network 192.168.1.0 access.
14
Although all networks are reachable, the network administrator notices abnormal
routing behavior after configuring OSPF on each router. According to the partial
output from the debug ip ospf events command, which statement is true about the
contents of the routing table in RA?
It will show network 172.16.3.0 learned from RB.
It will show network 172.16.3.0 learned from RC.
It will show two equal routes to network 192.168.1.4/30.
It will show two equal routes to network 192.168.1.8/30.

13. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
15
A network at a large building failed, causing a severe disruption in business activities.
The problem was eventually detected and resolved by replacing a piece of failed
network equipment. Investigation led to the conclusion that a network design problem
was the main cause of the disruption. Loss of a single piece of equipment should not
have been able to cause such a large problem. What two terms best describe this type
of design weakness? (Choose two.)
bottleneck
limited availability
limited scalability
large failure domain
single point of failure
limited staff capabilities
16

14. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
Refer to the exhibit. The network administrator is troubleshooting the connectivity
issue between RA and RB. According to the partial configuration, what is the cause of
the problem?
password mismatch for PPP authentication
username mismatch for PPP authentication
encapsulation method mismatch for PPP authentication
authentication method mismatch for PPP authentication
17
Refer to the exhibit. ABC Company is using the 172.16.0.0/18 network. It is standard
company practice to use the first 50 addresses for switches and servers and assign the
last usable address to the router. The remaining addresses are assigned to the hosts.
After assigning the addresses, the network technician tests connectivity from the host
above and is not able to ping the router. What could be the problem?
The router was assigned the broadcast address.
The host is not in the same subnet as the switch and router.
The router interface is in the wrong subnet.
The host was assigned a network address.

15. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
18
Refer to the exhibit. A network administrator is troubleshooting a problem. No users
are able to access the 10.10.2.0/24 network, but are able to access all other networks.
Assuming R3 is configured correctly and based on the output shown, what is most
likely the problem?
There is congestion on the 10.10.2.0 network.
The EIGRP process number on R2 is incorrect.
The Fa0/0 interface on R2 is shut down.

16. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
The Fa0/0 interface on R2 has an incorrect IP address or subnet mask.
19
Refer to the exhibit. The network administrator correctly configures RTA to perform
inter-VLAN routing. Using the show vlan command, the administrator verifies that
port Fast Ethernet 0/4 is the first available port in the default VLAN on SW2. The
administrator connects RTA to port 0/4 on SW2, but inter-VLAN routing does not
work. What could be the possible cause of the problem with the SW2 configuration?
Port 0/4 is not active.
Port 0/4 must be a member of VLAN1.
Port 0/4 is configured in access mode.
Port 0/4 is configured as a trunk port.

17. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
20
Refer to the exhibit. The network administrator is unable to ping from the console of
router R3 to host 10.10.4.63. What is the problem?
RIPv1 does not support VLSM.
Router R2 does not have RIP correctly configured.
Router R3 is missing a network statement for network 10.0.0.0.
There is an addressing problem on the link between routers R2 and R3.
21

18. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
Refer to the exhibit. A network administrator has implemented subnetting using the
network 192.168.25.0 and a /28 mask. Workstation 1 is not able to ping with
Workstation 2. What is a possible cause for this lack of communication?
Workstation 1 and Workstation 2 are on the same subnet.
The serial connections are using addresses from the LAN subnets.
All hosts in the network must be in the same subnet to communicate.
Workstation 1 is not on the same network that the RTA router LAN interface is on.
22
Which two statements describe when a network administrator should perform a
network baseline? (Choose two.)
It should be done monthly as a minimum standard.
It should be performed when all switch Cisco IOS versions are upgraded.
It should be done when all network printers are upgraded to a new model.

19. CCNA Discovery 4.1 - CCNA Discovery Answers
http://ccna-discovery-4.blogspot.com/
It should be done when the network is performing at normal activity levels.
It should be done whenever an SLA has been signed with a new service provider.