CCNA 4 Final Exam Answers Option B

Cisco CCNA 4 Simulation v6.0 Test Final Exam Option B

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CCNA 4 Final Exam Answers Option B Quiz Questions and Answers. In this simulation, take your test, get your score and share with others!

Points: 100
Questions: 55
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Allowed attempts: Unlimited

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CCNA 4 V6.0 Final Exam Answers Option B Questions and Answers

A network administrator is configuring a PPP link with the commands:
R1(config-if)# encapsulation ppp
R1(config-if)# ppp quality 70
What is the effect of these commands?

The LCP establishment phase will not start until the bandwidth reaches 70 percent or more.

The PPP link will be closed down if the link quality drops below 70 percent.

The NCP will send a message to the sending device if the link usage reaches 70 percent.

The PPP link will not be established if more than 30 percent of options cannot be accepted.

Which pillar of the Cisco IoT System allows data to be analyzed and managed at the location where it is generated?

fog computing

network connectivity

data analytics

application enhancement platform

Which broadband solution is appropriate for a home user who needs a wired connection not limited by distance?

cable

ADSL

DSL

WiMax

Which QoS mechanism allows delay-sensitive data, such as voice, to be sent first before packets in other queues are sent?

CBWFQ

LLQ

FIFO

FCFS

Which IOS log message level indicates the highest severity level?

level 1

level 7

level 4

level 0

Refer to the exhibit. What type of Layer 2 encapsulation will be used for RtrA connection D if it is left to the default and the router is a Cisco router?

Frame Relay

PPP

Ethernet

HDLC

Refer to the exhibit. As traffic is forwarded out an egress interface with QoS treatment, which congestion avoidance technique is used?

classification and marking

traffic shaping

weighted random early detection

traffic policing

Fill in the blanks. Use dotted decimal format.The wildcard mask that is associated with 128.165.216.0/23 is ___

0.0.1.255

Which WAN solution uses labels to identify the path in sending packets through a provider network?

DSL

cable

MPLS

Frame Relay

VSAT

Which SNMP feature provides a solution to the main disadvantage of SNMP polling?

SNMP set messages

SNMP community strings

SNMP get messages

SNMP trap messages

What PPP information will be displayed if a network engineer issues the show ppp multilink command on Cisco router?

the queuing type on the link

the IP addresses of the link interfaces

the link LCP and NCP status

the serial interfaces participating in the multilink

A network technician made a configuration change on the core router in order to solve a problem. However, the problem is not solved. Which step should the technician take next?

Implement the next possible corrective action.

Gather symptoms.

Isolate the problem.

Restore the previous configuration.

Which circumstance would result in an enterprise deciding to implement a corporate WAN?

when its employees become distributed across many branch locations

when the enterprise decides to secure its corporate LAN

when the number of employees exceeds the capacity of the LAN

when the network will span multiple buildings

Refer to the exhibit. A router has an existing ACL that permits all traffic from the 172.16.0.0 network. The administrator attempts to add a new ACE to the ACL that denies packets from host 172.16.0.1 and receives the error message that is shown in the exhibit. What action can the administrator take to block packets from host 172.16.0.1 while still permitting all other traffic from the 172.16.0.0 network?

Create a second access list denying the host and apply it to the same interface.

Manually add the new deny ACE with a sequence number of 5.

Manually add the new deny ACE with a sequence number of 15.

Add a deny any any ACE to access-list 1.

In software defined network architecture, what function is removed from network devices and performed by an SDN controller?

control plane

data plane

security

application policies

Match the characteristic to the appropriate authentication protocol. (Not all options are used.)

PAP charecteristics
uses two-way handshake
single challenge
weak authentication
clear text passwords

CHAP charecteristics
uses three-way handshake
repeated challenges
strong authentication
encryted passwords

Match the term to the description. (Not all options are used.)

an interface that is presented with more traffic than it can dandle->congestion
measured in the number of bits that can be sent in a single second->bandwidh
the variation in the latency between each received packet->jitter
the time it takes for a message to travel from the source to the destination->delay

A corporation is searching for an easy and low cost solution to provide teleworkers with a secure connection to headquarters. Which solution should be selected?

leased line connection

dial-up connection

site-to-site VPN over the Internet

remote access VPN over the Internet

Which symptom is an example of network issues at the network layer?

A web server cannot be reached by its domain name, but can be reached via its IP address.

A misconfigured firewall blocks traffic to a file server.

Neighbor adjacency is formed with some routers, but not all routers.

There are too many invalid frames transmitted in the network.

What is a disadvantage of ATM compared to Frame Relay?

less efficient

does not scale well to provide high speed WAN connections

requires multiple interfaces on the edge router to support multiple VCs

lacks SVC support

A user reports that when the corporate web page URL is entered on a web browser, an error message indicates that the page cannot be displayed. The help-desk technician asks the user to enter the IP address of the web server to see if the page can be displayed. Which troubleshooting method is being used by the technician?

bottom-up

substitution

divide-and-conquer

top-down

What are two types of WAN providers? (Choose two.)

Internet search engine service

web hosting service

DNS servers

satellite service

telephone company

Refer to the exhibit. H1 can only ping H2, H3, and the Fa0/0 interface of router R1. H2 and H3 can ping H4 and H5. Why might H1 not be able to successfully ping H4 and H5?

The link between router R1 and switch S2 has failed.

Host H1 does not have a default gateway configured.

Router R1 does not have a route to the destination network.

Hosts H4 and H5 are members of a different VLAN than host H1.

Switch S1 does not have an IP address configured.

What is the maximum number of DS0 channels in a 1.544 Mbps T1 line?

What is a primary function of the Cisco IOS IP Service Level Agreements feature?

to detect potential network attacks

to adjust network device configurations to avoid congestion

to provide network connectivity for customers

to measure network performance and discover a network failure as early as possible

What two protocols are supported on Cisco devices for AAA communications? (Choose two.)

LLDP

TACACS+

RADIUS

HSRP

VTP

The computers used by the network administrators for a school are on the 10.7.0.0/27 network. Which two commands are needed at a minimum to apply an ACL that will ensure that only devices that are used by the network administrators will be allowed Telnet access to the routers? (Choose two.)

access-list standard VTY
permit 10.7.0.0 0.0.0.127

access-class 5 in

access-list 5 deny any

ip access-group 5 out

ip access-group 5 in

access-list 5 permit 10.7.0.0 0.0.0.31

Refer to the exhibit. All routers are successfully running the BGP routing protocol. How many routers must use EBGP in order to share routing information across the autonomous systems?

A network administrator is adding ACLs to a new IPv6 multirouter environment. Which IPv6 ACE is automatically added implicitly at the end of an ACL so that two adjacent routers can discover each other?

deny ip any any

permit icmp any any nd-na

permit ip any host ip_address

permit ip any any

Which statement describes a characteristic of standard IPv4 ACLs?

They filter traffic based on source IP addresses only.

They can be configured to filter traffic based on both source IP addresses and source ports.

They can be created with a number but not with a name.

They are configured in the interface configuration mode.

An intercity bus company wants to offer constant Internet connectivity to the users traveling on the buses. Which two types of WAN infrastructure would meet the requirements? (Choose two.)

cellular

dedicated

public infrastructure

private infrastructure

circuit-switched

Which queuing mechanism supports user-defined traffic classes?

FIFO

FCFS

WFQ

CBWFQ

Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

The connectivity between these two hosts allows for videoconferencing calls.

There is connectivity between this device and the device at 192.168.100.1.

The average transmission time between the two hosts is 2 milliseconds.

This host does not have a default gateway configured.

There are 4 hops between this device and the device at 192.168.100.1.

What is a feature of dense wavelength-division multiplexing (DWDM) technology?

It enables bidirectional communications over one strand of fiber.

It provides a 10 Gb/s multiplexed signal over analog copper telephone lines.

It provides Layer 3 support for long distance data communications.

It replaces SONET and SDH technologies.

Which three implicit access control entries are automatically added to the end of an IPv6 ACL? (Choose three.)

deny icmp any any

deny ip any any

deny ipv6 any any

permit icmp any any nd-na

permit ipv6 any any

permit icmp any any nd-ns

How does virtualization help with disaster recovery within a data center?

Hardware does not have to be identical.

Power is always provided.

Server provisioning is faster.

Less energy is consumed.

What would a network administrator expect the routing table of stub router R1 to look like if connectivity to the ISP was established via a PPPoE configuration?

S* 0.0.0.0/0 is directly connected, Dialer1
192.168.1.0/32 is subnetted, 2 subnetted
C 192.168.1.1 is directly connected, Dialer1
C 192.168.1.2 is directly connected, Dialer1

S* 0.0.0.0/0 is directly connected, Dialer1

192.168.1.0/32 is subnetted, 2 subnetted
C 192.168.1.1 is directly connected, Dialer

192.168.1.0/32 is subnetted, 2 subnetted
C 192.168.1.1 is directly connected, Dialer1
C 192.168.1.2 is directly connected, Dialer2

Which two functions are provided by the NCP during a PPP connection? (Choose two.)

bringing the network layer protocol or protocols up and down

identifying fault conditions for the PPP link

enhancing security by providing callback over PPP

negotiating options for the IP protocol

managing authentication of the peer routers of the PPP link

providing multilink capabilities over the PPP link

Which type of resources are required for a Type 1 hypervisor?

a server running VMware Fusion

a management console

a host operating system

a dedicated VLAN

Which three values or sets of values are included when creating an extended access control list entry? (Choose three.)

source subnet mask and wildcard mask

destination subnet mask and wildcard mask

source address and wildcard mask

access list number between 100 and 199

default gateway address and wildcard mask

access list number between 1 and 99

destination address and wildcard mask

Refer to the exhibit. Which statement describes the status of the PPP connection?

Neither the link-establishment phase nor the network-layer phase completed successfully.

Both the link-establishment and network-layer phase completed successfully.

Only the network-layer phase completed successfully.

Only the link-establishment phase completed successfully.

What would be the primary reason an attacker would launch a MAC address overflow attack?

so that the attacker can see frames that are destined for other hosts

so that the attacker can execute arbitrary code on the switch

so that the switch stops forwarding traffic

so that legitimate hosts cannot obtain a MAC address

What two features are added in SNMPv3 to address the weaknesses of previous versions of SNMP? (Choose two.)

authorization with community string priority

encryption

ACL management filtering

authentication

bulk MIB objects retrieval

What is a benefit of implementing a Dynamic Multipoint VPN network design?

A DMVPN uses mGRE to create multiple GRE interfaces that each support a single VPN tunnel.

A DMVPN will support remote peers by providing a mapping database of public IP addresses to each one.

A DMVPN uses a Layer 3 protocol, NHRP, to dynamically establish tunnels.

A DMVPN will use an encrypted session and does not require IPsec.

What is an example of cloud computing?

a network infrastructure that spans a large geographic area

a continuous interaction between people, processes, data, and things

an architectural style of the World Wide Web

a service that offers on-demand access to shared resources

What security countermeasure is effective for preventing CAM table overflow attacks?

Dynamic ARP Inspection

DHCP snooping

IP source guard

port security

Which remote access implementation scenario will support the use of generic routing encapsulation tunneling?

a mobile user who connects to a router at a central site

a mobile user who connects to a SOHO site

a central site that connects to a SOHO site without encryption

a branch office that connects securely to a central site

What device is needed at a central office to aggregate many digital subscriber lines from customers?

CMTS

CSU/DSU

access server

DSLAM

What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?

CHAP

PPPoE

ADSL

LTE

Which two types of devices are specific to WAN environments and are not found on a LAN? (Choose two.)

CSU/DSU

core switch

distribution layer router

broadband modem

access layer switch

What is the function of a QoS trust boundary?

A trust boundary only allows traffic to enter if it has previously been marked.

A trust boundary identifies which devices trust the marking on packets that enter a network.

A trust boundary identifies the location where traffic cannot be remarked.

A trust boundary only allows traffic from trusted endpoints to enter the network.

Refer to the exhibit. What feature does an SNMP manager need in order to be able to set a parameter on switch ACSw1?

a manager who is using an SNMP string of K44p0ut

a manager who is using authPriv

a manager who is using host 192.168.0.5

a manager who is using an Inform Request MIB

Which field is used to mark Layer 2 Ethernet frames for QoS treatment?

Traffic Class field

Version field

Priority field

Type of Service field

When SNMPv1 or SNMPv2 is being used, which feature provides secure access to MIB objects?

source validation

community strings

message integrity

packet encryption

What are three of the six core components in the Cisco IoT system? (Choose three.)

smart bandages