Item: Cisco CCNA 4 Simulation v6.0 Test Final Exam Option B
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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
Time limit: None
Allowed attempts: Unlimited

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

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

control plane

data plane

application policies

security

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

CMTS

DSLAM

access server

CSU/DSU

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

weighted random early detection

traffic shaping

classification and marking

traffic policing

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

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

Only the link-establishment phase completed successfully.

Only the network-layer phase completed successfully.

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

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

a management console

a dedicated VLAN

a server running VMware Fusion

a host operating system

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

SNMP set messages

SNMP get messages

SNMP community strings

SNMP trap messages

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?

PPP

Frame Relay

HDLC

Ethernet

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 any

permit ip any host ip_address

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

LLQ

FCFS

CBWFQ

FIFO

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

broadband modem

core switch

distribution layer router

CSU/DSU

access layer switch

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

web hosting service

Internet search engine service

satellite service

DNS servers

telephone company

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

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

fog computing

robot guides

wearable technologies

smart bandages

data analytics

cyber and physical security

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

default gateway address and wildcard mask

access list number between 100 and 199

destination address and wildcard mask

access list number between 1 and 99

source address and wildcard mask

destination subnet mask and wildcard mask

source subnet mask and wildcard mask

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 host 192.168.0.5

a manager who is using authPriv

a manager who is using an SNMP string of K44p0ut

a manager who is using an Inform Request MIB

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

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

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

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

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

cable

Frame Relay

MPLS

DSL

VSAT

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

application enhancement platform

data analytics

network connectivity

fog computing

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?

site-to-site VPN over the Internet

leased line connection

remote access VPN over the Internet

dial-up connection

What is a disadvantage of ATM compared to Frame Relay?

requires multiple interfaces on the edge router to support multiple VCs

does not scale well to provide high speed WAN connections

less efficient

lacks SVC support

Which IOS log message level indicates the highest severity level?

level 0

level 7

level 4

level 1

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

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

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

This host does not have a default gateway configured.

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

The connectivity between these two hosts allows for videoconferencing calls.

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.)

circuit-switched

dedicated

cellular

public infrastructure

private infrastructure

Which queuing mechanism supports user-defined traffic classes?

WFQ

FCFS

FIFO

CBWFQ

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?

top-down

bottom-up

substitution

divide-and-conquer

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-list 5 deny any

ip access-group 5 out

access-class 5 in

ip access-group 5 in

access-list 5 permit 10.7.0.0 0.0.0.31

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

deny ip any any

permit ipv6 any any

deny ipv6 any any

permit icmp any any nd-na

permit icmp any any nd-ns

deny icmp any any

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

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

LTE

CHAP

PPPoE

ADSL

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

cable

ADSL

DSL

WiMax

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

so that the attacker can execute arbitrary code on the switch

so that legitimate hosts cannot obtain a MAC address

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

so that the switch stops forwarding traffic

What is an example of cloud computing?

a service that offers on-demand access to shared resources

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

an architectural style of the World Wide Web

a network infrastructure that spans a large geographic area

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

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

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

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

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?

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

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.

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

the serial interfaces participating in the multilink

the queuing type on the link

the IP addresses of the link interfaces

the link LCP and NCP status

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

VTP

LLDP

TACACS+

HSRP

RADIUS

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

Version field

Priority field

Traffic Class field

Type of Service field

Which statement describes a characteristic of standard IPv4 ACLs?

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

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 are configured in the interface configuration mode.

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

authorization with community string priority

ACL management filtering

encryption

bulk MIB objects retrieval

authentication

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

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

to detect potential network attacks

to provide network connectivity for customers

to adjust network device configurations to avoid congestion

What is the function of a QoS trust boundary?

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

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

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

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

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?

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

a branch office that connects securely to a central site

a mobile user who connects to a SOHO site

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

a central site that connects to a SOHO site without encryption

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

negotiating options for the IP protocol

enhancing security by providing callback over PPP

bringing the network layer protocol or protocols up and down

providing multilink capabilities over the PPP link

identifying fault conditions for the PPP link

managing authentication of the peer routers of the PPP link

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

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

It provides Layer 3 support for long distance data communications.

It enables bidirectional communications over one strand of fiber.

It replaces SONET and SDH technologies.

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

There are too many invalid frames transmitted in the network.

A misconfigured firewall blocks traffic to a file server.

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

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

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?

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

S* 0.0.0.0/0 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, Dialer1
C 192.168.1.2 is directly connected, Dialer1

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

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.

Restore the previous configuration.

Isolate the problem.

Gather symptoms.

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

port security

DHCP snooping

IP source guard

Dynamic ARP Inspection

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?

Host H1 does not have a default gateway configured.

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

The link between router R1 and switch S2 has failed.

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

Switch S1 does not have an IP address configured.

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

when the network will span multiple buildings

when the number of employees exceeds the capacity of the LAN

when the enterprise decides to secure its corporate LAN

when its employees become distributed across many branch locations

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

message integrity

community strings

packet encryption

source validation

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

Less energy is consumed.

Server provisioning is faster.

Hardware does not have to be identical.

Power is always provided.