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DCompNtwk Final - CCNA Discovery: Designing and Supporting
Computer
Networks (Version 4.0)
1
Refer to the exhibit. After issuing the router configuration
commands shown, a network administrator finds that IPv6 routing is
not working on the router. What could solve the problem?
Configure a unique IPv6 RIP process on each interface.
Issue the ipv6 unicast-routing global configuration command.
Issue the ipv6 router rip v6process global configuration
command.
Change the prefix length on both IPv6 addresses from 64 to 128
bits.
2
Refer to the exhibit. While planning an upgrade, a network
administrator uses the Cisco NetFlow utility to analyze data flow
in the current network. What generated the most packets?
TCP-other
TCP-Telnet
ICMP
UDP-DNS
UDP-other
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3 A network engineer is at a customer site. After resolving
technical problems in the network, the engineer provides a training
session for the support staff. Which job function best fits the
activities of this network engineer?
network designer
account manager
pre-sales engineer
post-sales field engineer
4 What value is an alternative representation of the IPv6
address 2001:DB80:0000:0000:0C41:3EFF:FE00:0000?
2001:DB8::C41:3EFF:FE:
2001:DB80::C41:3EFF:FE00::
2001:DB80::C41:3EFF:FE00:0
2001:DB80:0:0:0:C41:3EFF:FE::
5 Which task would typically only require services that are
located at the access layer of the hierarchical design model?
placing a VoIP call to a business associate in another
country
connecting to the corporate web server to update sales
figures
using a VPN from home to send data to the main office server
farm
responding to an e-mail from a co-worker in another
department
printing a meeting agenda on a local departmental network
printer
6 What information does an administrator require before saving
the running configuration from a router to a TFTP server?
router IP address and the name of the configuration file in
NVRAM
TFTP server IP address and the size of the configuration file in
RAM
TFTP server IP address and the name of the configuration file
that will be saved
router IP address, size of the file and name of the
configuration file on the TFTP server
TFTP server IP address, the router IP address, and the router
interface through which the file will be loaded
7 Company XYZ needs a WAN connection between headquarters and
branch offices that has a high level of security. The connection
must provide high bandwidth to support VoIP and transactional data
with as little overhead as possible. What is the best solution for
WAN connectivity for company XYZ?
DSL
cable
cell relay
PPP over a leased line
8
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Refer to the exhibit. The named ACL "Managers" already exists on
the router. What will happen when the network administrator issues
the commands that are shown in the exhibit?
The commands overwrite the existing Managers ACL.
The commands are added at the end of the existing Managers
ACL.
The commands are added at the beginning of the existing Managers
ACL.
The network administrator receives an error that states that the
ACL already exists.
9
Refer to the exhibit. Which EIGRP configuration commands should
a network administrator enter on router R1 to correctly advertise a
single summary route to router MAIN for the campus LAN?
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10 What should be considered in the design of a wireless LAN on
a corporate campus?
the vendor of all employee wireless NICs
the cables that are used for LAN connectivity
the number of wireless NICs required on enterprise servers
the messaging features that are used on employee cell phones
the location of the concrete pillars and walls between the
offices
11 Which two technologies can provide data integrity in a VPN
connection? (Choose two.)
ESP
DES
MD5
DH1
SHA-1
12 A user in a large office calls technical support to complain
that a PC has suddenly lost connectivity to the network. The
technician asks the caller to talk to nearby users to see if
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other machines are affected. The caller reports that several
immediate neighbors in the same department have a similar problem
and that they cannot ping each other. Those who are seated in other
departments have connectivity. What should the technician check as
the first step in troubleshooting the issue?
the power outlet to the PC that is used by the caller.
the trunks between switches in the wiring closet.
the status of the departmental workgroup switch in the wiring
closet.
the cable that connects the PC of the caller to the network
jack.
the cable connection between a PC and a network outlet that is
used by a neighbor.
13 During the boot process and assuming the default sequence,
what is the second location where the router will look for the
IOS?
ROM
flash
NVRAM
TFTP server
14 Why is it difficult for network designers to predict the
patterns and behavior of file transfer traffic?
The traffic is user initiated.
File size is typically very small.
Dedicated bandwidth is essential.
All file transfer traffic is queued as high priority.
15 A router has been removed from the network for maintenance. A
new Cisco IOS software image has been successfully downloaded to a
server and copied into the flash of the router. What should be done
before placing the router back into the production network?
Back up the new image.
Copy the running configuration to NVRAM.
Restart the router and verify that the new image starts
successfully.
Delete the previously used version of the Cisco IOS software
from flash.
16
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Refer to the exhibit. Which two commands allow verification of
end-to-end Layer 3 connectivity from R3 to all devices? (Choose
two.)
R3> ping
R3# traceroute
R3# show ip arp
R3# show ip route
R3# show cdp neighbors
17 Company XYZ requires a WAN solution that provides flexible
bandwidth options and supports one physical interface at the head
office that would provide simultaneous connectivity to various
remote sites. The distance from each site should not make the
solution more expensive. Which WAN technology meets the
requirements of the company?
DSL
cable
Frame Relay
T1 leased line
18 What type of system connects to the PSTN and uses a PBX to
route calls via analog or digital lines?
VPN
VoIP
IP telephony
traditional telephony
19 While configuring EIGRP on a router, the technician enters
this command: Router(config-router)# variance 8 What is the effect
of entering this command?
It adjusts the cost of all EIGRP routes to 8.
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It enables unequal cost load balancing on the router.
It restricts the number of EIGRP feasible successor routes to
8.
It enables EIGRP equal cost load balancing over a maximum of 8
routes.
It modifies the number of values used in the composite metric
calculation.
20
Refer to the exhibit. What can be determined about the
connection between R3 and R4?
R4 is three hops away.
R4 is not a Cisco device.
R3 and R4 are directly connected.
R4 is reachable through switches Sw1 and Sw2.
21 Which statement describes the use of a network baseline?
It creates a high level logical network diagram.
It provides a point of reference for future network
evaluations.
It allows precise identification of the original location of
network equipment.
It should be established as soon as a problem is detected on the
network.
22
Refer to the exhibit. The routers are configured with RIPv2 and
utilize the default configuration. When attempting to communicate
with other networks, hosts from 172.31.1.0/24 are experiencing
connectivity issues. What could be done to resolve this issue?
Change to a public IP address scheme.
Ensure that automatic route summarization has been disabled on
all routers in the network.
Change the IP address for the Router3 LAN to be
192.168.7.0/24.
Change the subnet mask on the link between Router2 and Router3
to 255.255.255.0.
23 A network administrator has configured Frame Relay on a
serial interface and issued the
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show interfaces serial command. The output shows that the
interface is up and the line protocol is up. However, pings to the
remote router across the link fail. What should the next step be to
ensure that the IP address of the remote router appears in the
Frame Relay map table of the local router?
Configure the router using the no inverse-arp command.
Ensure that the LMI type is correct for the circuit.
Configure the router using the frame-relay map ip command.
Verify that the remote router has Frame Relay encapsulation
enabled.
24
Refer to the exhibit. What can be concluded from the output that
is shown?
MDF_2811 has a MAC address of 2294:300F:0000.
Device C3750-24_IDF2 is running Cisco IOS Software Release
12.3(23)SEE2.
A Cisco 3750 switch is connected to the FastEthernet1/0/1 port
on MDF_2811.
MDF_2811 is installed in the main distribution facility on floor
28 of building 11.
25 A network designer has chosen to specify the use of a
dedicated firewall appliance at the perimeter of a large network.
Why would the designer use a dedicated firewall rather than using
the Cisco IOS firewall feature set on the existing router?
Traffic filtering is needed on the internal LAN.
Multiple levels of access to the network are needed.
The DMZ requires packet filtering and port blocking.
Heavy network traffic will be handled best by using a dedicated
device.
26 Which security procedure should be considered to protect a
server farm against internal attacks?
Locate the server farm on a DMZ.
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Virtualize server resources whenever possible.
Implement load balancing and failover between servers.
Implement a layer of firewall features and intrusion protection
between the servers and the internal networks.
27 What is a signaling standard that is used for managing and
maintaining the connection between a CPE router and the service
provider Frame Relay switch?
ARP
CIR
DLCI
Inverse ARP
LMI
28 A network administrator is integrating IPv6 into an IPv4
network by encapsulating one protocol packet within another
protocol. Which transition method is being used?
dual stack
tunneling
proxying and translation
NAT with Protocol Translator
29 A network administrator is asked to upgrade the enterprise
network devices and to modify the addressing scheme to support VLSM
and route summarization. The current network infrastructure
contains both Cisco and non-Cisco routers. The plan is to replace
old routers gradually with the latest Cisco routers. Which two
routing protocols can the administrator use to support both
upgrading requirements? (Choose two.)
BGP
OSPF
RIPv1
RIPv2
EIGRP
30
Refer to the exhibit. A network engineer applies the ACL that is
shown in the exhibit to interface S0/0/0 on router R1 outbound.
What impact will the ACL have on traffic that moves
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through interface S0/0/0?
All traffic from the 172.16.0.0/16 network will be
permitted.
All traffic from the 172.16.5.0/24 network will be
permitted.
All traffic from the host with the IP address 172.16.5.5 will be
permitted.
All traffic that is destined for the 172.16.5.0/24 network will
be permitted.
All traffic that is destined for the host with the IP address
172.16.5.5 will be permitted.
31
Refer to the exhibit. EIGRP has been configured as a routing
protocol in the network. Users who are connected on LAN_1 and LAN_2
can ping their default gateways. Users on LAN_1 complain that they
are unable to access the resources on the file server that is
connected to LAN_2. A technician issues the show ip interface brief
command on R1 to verify the status of the interfaces. What
information will help the technician troubleshoot the issue?
Interface S0/0/1 line protocol is down.
Interface Vlan1 is administratively down.
Interface Fa0/1 is missing an IP address.
Interface S0/0/0 is configured with an incorrect IP address.
32 In a converged network, which two types of traffic would be
categorized as real-time traffic? (Choose two.)
e-mail
file transfer
web browsing
videoconferencing
voice over IP
video on demand
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33
Refer to the exhibit. A customer has a problem with connectivity
in the network. Based on the IP addressing scheme, what is causing
the problem?
The WAN links need IP addresses from a different major
network.
The WAN link that connects R1 to R2 overlaps with the R3
LAN.
The WAN links that connect R1 to R3 and R1 to R2 have incorrect
masks.
The R1 LAN is incorrect because subnet zero cannot be used with
VLSM.
34 What are the primary design goals for the core Layer?
to provide centralized server farm and VoIP services
to provide dynamic routing services, filtering, and traffic flow
management
to provide 100% uptime, maximization of throughput, and
facilitation of network growth
to provide static routing, wireless access points for the
network, and security for the edge devices
35
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Refer to the exhibit. A NetworkingCompany engineer is
characterizing an existing network for a new customer. The engineer
issues a show running-config command on the branch router to gather
configuration information. What is the engineer able to determine
as a result of viewing the output of this command?
The branch office router has two routes to the main office LANs
in the routing table.
The default route for the branch office traffic is the serial
link to the Edge2 router.
A connection through ISP-A will be used to reach the main office
LANs if the Frame Relay network is unavailable.
By using both the DSL and the Frame Relay connection, the branch
office router will load balance traffic that is destined for the
main office LANs.
36 In order for the IT staff of a company to understand the
basic operation of VPNs, which two features or technologies must
the network designer identify as training needs? (Choose two.)
IPv6 tunneling
QoS operation
tunneling protocols
VLAN configuration
encryption algorithms
37
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Refer to the exhibit. A networking company designer is reviewing
a diagram of a customer network. What are the two problems that
need to be resolved in the topology that is shown? (Choose
two.)
The firewall router and ISP connection represent a single point
of failure.
If one of the Layer 3 switches fails, the Cisco Call Manager
will be unreachable.
A power supply failure of the server block switch will cause the
entire IP telephony system to fail.
Using Layer 3 switches to interconnect the server block servers
to the IP phones introduces too much delay.
The IP phones need to be redundantly connected to the switches
to prevent single points of failure at the access layer.
38 A WIC-1T module needs to be installed in a Cisco 1841 router
that currently has a WIC-2T module in slot 0. What should the
network technician do first?
Install the hot-swappable option module.
Turn off the power to the router before installing the new
module.
Remove the WIC-2T module so that the new module can be installed
in slot 0.
Shut down all Fast Ethernet ports on the router until the new
WIC module installation is complete.
Configure the Cisco IOS software to support an internal trunk
link between the two WIC modules.
39 When implementing a security policy, which two actions should
be included as part of the security checklist? (Choose two.)
Disable all logging.
Enable Telnet on TCP port 23.
Use HTTP for web administration.
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Set timeouts and ACLs on VTY lines.
Shut down any unused ports and interfaces.
40
Refer to the exhibit. Access list 100 is applied inbound to
interface serial 0/0/0 on the SOHO Router1. Which traffic will be
denied by the configuration?
DNS traffic from host A to the Internet
FTP traffic from host A to the Internet
ICMP traffic from the ISP to server 1
traffic from the ISP to the server on port 23
41
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Refer to the exhibit. Following a test plan, the network systems
engineer completes the configuration of an access layer switch and
connects three PCs. The engineer attempts to ping from each PC to
the other connected PCs to test the configuration. Which statement
describes the result of the last step?
Host 1 can ping Host 2.
Host 1 can ping Host 3.
Host 2 can ping Host 3.
No hosts can ping any other host.
42 Which technology will prioritize traffic based upon the
technical requirements of IP telephony?
PoE
QoS
RPC
RTP
VPN
43
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Refer to the exhibit. A network associate is configuring a new
router to provide routing between VLANs. The associate removes the
router from the box and connects the Fa0/0 interface to a trunking
port on the switch. After the configuration is applied to the
router, the traffic between VLANs still fails. What is causing this
to occur?
The NWRnStick router needs a routing protocol configured.
The NWRnStick router needs additional Fast Ethernet interfaces
installed.
The subinterfaces of the NWRnStick router should have IP
addresses applied.
All the subinterfaces of the NWRnStick router should be
configured in the same VLAN.
44 What can be broadcast over the wireless network to help a
user connect to the network and use wireless services?
SSID
WEP keys
VLAN parameters
WPA encryption keys
VPN authentication information
45 A network engineer is prototyping a new IP addressing and
summarization strategy for a new network that will be integrated
into the existing infrastructure. Which method is appropriate for
testing the addressing scheme?
using the production network of the customer
using actual network equipment in a lab
using the Cisco Network Assistant
using a network simulation tool
46 A company decides to deploy a virtual private network (VPN)
to connect remote workers and
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branch offices to corporate headquarters. What is the best
description of the type of connectivity the company is ready to
implement?
a VPN that uses LANs to connect remote sites or users
a VPN that uses a public network to connect remote sites or
users
a VPN that uses a wireless LAN over the Internet to connect
remote sites or users
a VPN that uses a dedicated connections, such as leased lines,
to connect remote sites or users
47
Refer to the exhibit. What can the field engineer conclude about
the EIGRP authentication between Router1 and Router2?
Authentication will fail because only one key is configured.
Authentication will succeed and EIGRP updates can be
exchanged.
Authentication will fail because the key chain names do not
match.
Authentication will fail because the key chain names must match
the router names.
48
Refer to the exhibit. An administrator installs a WIC-2T module
into a Cisco 1841 router. Attempts to configure the S0/0/0
interface are unsuccessful. As a first step in troubleshooting
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the failure, the administrator issues the show version command.
What is a possible reason for the failure?
The WIC was not physically installed properly.
The WIC was installed into slot 1 instead of slot 0.
The interface type and number are invalid on an 1841.
The configuration register is the wrong value for adding new
modules.
49 What type of Frame Relay subinterface must be used to connect
remote sites without having to disable split horizon?
multipoint
multiaccess
point-to-point
nonbroadcast multiaccess
50 Which statement is true about the pairing of services and
transport layer protocols for FTP and VoIP?
FTP applications and VoIP use TCP at the transport layer.
FTP applications and VoIP use UDP at the transport layer.
FTP applications use TCP at the transport layer while VoIP uses
UDP at the transport layer.
FTP applications use UDP at the transport layer while VoIP uses
TCP at the transport layer.
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