CCNA Discovery 4 - Designing and SupportingComputer Networks (Version 4.0)

CCNA Discovery 4 Final Exam Answers

CCNA Discovery 4 Final Exam Answers

1. 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.

 

2. 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

CCNA Discovery 4 Final Exam V4.0 Answers

CCNA Discovery 4 Final Exam V4.0 Answers

1. A technician adds the command Router(config-router)# variance 5 to a router using EIGRP as the routing protocol. What is the result of entering this command?

enables unequal cost load balancing

• adjusts the metric of all EIGRP routes to 5

• restricts the number of EIGRP feasible successor routes to 5

• activates the use of all K values in the composite metric calculation

• enables EIGRP equal cost load balancing over a maximum of 5 routes

 

2. A company is concerned with protecting internal e-commerce servers against external attacks. An application layer firewall is installed at the network edge and a host-based IDS system is installed on the internal LAN. What should be done to ensure a fast response and minimum server downtime in the event of an external attack?

Replace the host-based IDS with an IPS.

• Place the e-commerce servers in a DMZ.

• Install a logging server to monitor all attacks.

• Replace the application layer firewall with a stateful one.

CCNA Discovery 4 Practice Final Exam V4.0 Answers

CCNA Discovery 4 Practice Final Exam V4.0 Answers

1. What are two advantages of using Layer 3 devices instead of Layer 2 switches at the distribution layer of a hierarchical network? (Choose two.)

allows connectivity between different VLANs

provides reliable connectivity to the end user

reduces the number of required redundant links

results in fewer IP subnets to configure and manage

enables traffic filtering that is based on subnet addresses

 

2. 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 service?

Back up the new image.

Copy the running configuration to NVRAM.

Delete the previous version of the Cisco IOS software from flash.

Restart the router and verify that the new image starts successfully.

CCNA Discovery 4 Chapter 9 V4.0 Answers

1. Which statement describes a phased installation into an existing network?

• A phased installation generally takes less time and expense than a green-field installation.

• A phased installation is not suitable for large, multi-site network installations or upgrades.

A phased installation requires detailed planning in order to avoid disruption of user services.

• A phased installation involves building an entire replacement network and migrating users over to it.

 

2. AAA Financial Services Company is performing implementation planning for a core switch upgrade. The company has 200 financial software programmers that work billable hours during the week. They have critical, scheduled money transfer transmissions that occur at hourly intervals every night. There are two, two-hour long IT maintenance windows scheduled for software upgrades, one on Saturday and one on Sunday. The bank advertises online banking as available 24 hours on business days and 21 hours on the weekends. However, a network upgrade that is necessary to replace some switches is expected to take four hours. Because of rack constraints, this time includes three hours to remove the old switches before the new switches can be installed and one hour to test the logical configuration. How should the implementation scheduling be handled?

• Defer the software upgrades. Use the Saturday window to perform the hardware installation. Use the Sunday window to perform the logical testing.

• Coordinate and publish a separate four-hour downtime during Friday to perform the complete switch installation and testing process. Use the Saturday and Sunday windows to correct any outage problems after the Friday window.

• Coordinate and publish two, four-hour downtimes incorporating the published Saturday and Sunday windows. Defer any software upgrades until the new network is proven to be working correctly with the old software. Use the Sunday window as a fallback scheduling period if there are problems necessitating backing out of the Saturday window.

Coordinate and publish an eight-hour downtime incorporating the Saturday window. This will allow four hours for installation and logical testing, one hour for troubleshooting and decision, and three hours to roll back to the previous configuration if the new switching cannot pass the logical testing. Defer any software upgrades until the new network is proven to be working correctly with the old software.

CCNA Discovery 4 Chapter 8 V4.0 Answers

CCNA Discovery 4 Chapter 8 V4.0 Answers

1. What is used to identify the path to the next Frame Relay switch in a Frame Relay network?

• CIR

DLCI

• FECN

• BECN

 

2. Which bit is set by a Frame Relay switch to inform the source station that there is congestion on the network?

• BECN

• CIR

• DE

• FCS

FECN

CCNA Discovery 4 Chapter 7 V4.0 Answers

1.

Where the ACL should be placed for the least effect on other network traffic

Refer to the exhibit. The users on the 192.168.10.192 network are not allowed Internet access. The network design calls for an extended ACL to be developed and tested. Where the ACL should be placed for the least effect on other network traffic?

• inbound on Fa0/0 of R3

• outbound on Fa0/0 of R3

inbound on Fa0/1 of R3

• outbound on Fa0/1 of R3

• inbound on Fa0/1 of R2

• outbound on S0/0 of R2

 

2.

The redundant paths are of equal bandwidth and EIGRP is the routing protocol in use

Refer to the exhibit. The redundant paths are of equal bandwidth and EIGRP is the routing protocol in use. Which statement describes the data flow from Server to PC2?

EIGRP load balances across the R3 to R1 and R3 to R2 links.

• EIGRP load balances across the R1 to Switch3 and R2 to Switch3 paths.

• EIGRP load balances across the Switch1 to Switch3 and Switch1 to Switch2 paths.

• EIGRP does not load balance in this topology.

CCNA Discovery 4 Chapter 6 V4.0 Answers

1.

What are the broadcast addresses for each subnet

Refer to the exhibit. What are the broadcast addresses for each subnet?

• Admin – 172.16.31.0
QA – 172.16.1.127
Development – 172.16.2.255
Sales – 172.16.32.255

• Admin – 172.16.31.0
Development – 172.16.2.255
QA – 172.16.1.255
Sales – 172.16.63.255

Admin – 172.16.31.255
Development – 172.16.3.255
QA – 172.16.1.127
Sales – 172.16.63.255

• Admin – 172.16.31.0
QA – 172.16.1.255
Development – 172.16.2.255
Sales – 172.16.32.255

 

2. How many bits make up an IPv6 address?

• 32

• 48

• 64

128

• 132

CCNA Discovery 4 Chapter 5 V4.0 Answers

CCNA Discovery 4 Chapter 5 V4.0 Answers

1. What is a primary function of a wireless LAN controller?

tuning each AP channel for optimal coverage

providing PoE to the wireless clients

distributing VLAN information to the wireless clients

serving as the point of connection between wireless clients and the wired LAN

 

2. Which statement applies to a large network with thousands of nodes?

Each wireless phone is normally in a separate VLAN for security reasons.

Multiple firewalls exist throughout the access layer for maximum security protection.

Firewalls cannot be implemented in the multilayer switches and routers.

Intrusion detection is more likely to be performed by a separate device rather than integrated into a switc router.

CCNA Discovery 4 Chapter 4 V4.0 Answers

CCNA Discovery 4 Chapter 4 V4.0 Answers

1. The design of an IP telephony system needs to meet the technical requirements to provide a connection to the PSTN as well as provide high-quality voice transmissions using the campus network. Which two elements directly affect the ability of the design to meet these requirements? (Choose two.)

• voice-enabled firewall

• PoE switches and patch panels

• redundant backbone connectivity

voice-enabled router at the enterprise edge

separate voice and data VLANs with QoS implemented

 

2. Which technology provides a mechanism for implementing QoS at Layer 2?

• ToS

CoS

• DSCP

• IP precedence

CCNA Discovery 4 Chapter 3 V4.0 Answers

1.

Based upon the Cisco IOS file naming convention

Refer to the exhibit. Based upon the Cisco IOS file naming convention, what is represented by the value ipvoicek9 listed in the IOS filename?

version

file format

feature set

hardware platform

 

2. During a wireless site survey, a consultant is determining the hours of peak usage and the estimated number users in each location. The consultant is currently in what step of the site survey process?

the defining of customer requirements

the identification of coverage areas

the determining of preliminary AP locations

the measurement of signal strength