CCNA 4 Final Exam Answers Option B

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

Questions and answers - 10/10
10/10

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

Check all the CCNA exams in THIS SECTION.

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

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?

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

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

The link between router R1 and switch S2 has failed.

Switch S1 does not have an IP address configured.

Host H1 does not have a default gateway configured.

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

Priority field

Version field

Type of Service field

Traffic Class field

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?

Isolate the problem.

Gather symptoms.

Implement the next possible corrective action.

Restore the previous configuration.

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

LTE

CHAP

ADSL

PPPoE

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

application policies

data plane

security

control plane

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

IP source guard

DHCP snooping

port security

Dynamic ARP Inspection

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?

remote access VPN over the Internet

dial-up connection

leased line connection

site-to-site VPN over the Internet

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

permit icmp any any nd-na

deny icmp any any

deny ip any any

deny ipv6 any any

permit ipv6 any any

permit icmp any any nd-ns

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

destination address and wildcard mask

access list number between 1 and 99

access list number between 100 and 199

default gateway address and wildcard mask

destination subnet mask and wildcard mask

source address and wildcard mask

source subnet mask and wildcard mask

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?

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

It enables bidirectional communications over one strand of fiber.

It provides Layer 3 support for long distance data communications.

It replaces SONET and SDH technologies.

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

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

DSL

WiMax

cable

ADSL

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 link LCP and NCP status

the IP addresses of the link interfaces

the serial interfaces participating in the multilink

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

Hardware does not have to be identical.

Power is always provided.

Less energy is consumed.

Server provisioning is faster.

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.

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

There are too many invalid frames transmitted in the network.

A misconfigured firewall blocks traffic to a file server.

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

smart bandages

wearable technologies

fog computing

cyber and physical security

data analytics

robot guides

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?

permit ip any any

deny ip any any

permit ip any host ip_address

permit icmp any any nd-na

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 type of resources are required for a Type 1 hypervisor?

a management console

a host operating system

a dedicated VLAN

a server running VMware Fusion

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

network connectivity

application enhancement platform

fog computing

data analytics

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.)

public infrastructure

circuit-switched

cellular

private infrastructure

dedicated

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.)

ip access-group 5 out

access-class 5 in

ip access-group 5 in

access-list standard VTY
permit 10.7.0.0 0.0.0.127

access-list 5 permit 10.7.0.0 0.0.0.31

access-list 5 deny any

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

LLDP

TACACS+

VTP

RADIUS

HSRP

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

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 15.

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

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

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

broadband modem

core switch

access layer switch

CSU/DSU

distribution layer router

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

web hosting service

satellite service

telephone company

Internet search engine service

DNS servers

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

encryption

ACL management filtering

bulk MIB objects retrieval

authorization with community string priority

authentication

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

traffic policing

classification and marking

Which queuing mechanism supports user-defined traffic classes?

CBWFQ

FCFS

WFQ

FIFO

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

SNMP trap messages

SNMP community strings

SNMP set messages

SNMP get messages

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

cable

Frame Relay

VSAT

MPLS

DSL

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

Only the link-establishment phase completed successfully.

Only the network-layer phase completed successfully.

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

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

What is an example of cloud computing?

an architectural style of the World Wide Web

a service that offers on-demand access to shared resources

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

a network infrastructure that spans a large geographic area

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

a central site that connects to a SOHO site without encryption

a branch office that connects securely to a central site

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

a mobile user who connects to a SOHO site

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?

HDLC

Frame Relay

PPP

Ethernet

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

to detect potential network attacks

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

to adjust network device configurations to avoid congestion

to provide network connectivity for customers

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

LLQ

FIFO

CBWFQ

FCFS

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

top-down

divide-and-conquer

substitution

What is a disadvantage of ATM compared to Frame Relay?

lacks SVC support

less efficient

does not scale well to provide high speed WAN connections

requires multiple interfaces on the edge router to support multiple VCs

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 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.

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

message integrity

source validation

packet encryption

community strings

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

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. 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 an Inform Request MIB

a manager who is using an SNMP string of K44p0ut

a manager who is using authPriv

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

bringing the network layer protocol or protocols up and down

managing authentication of the peer routers of the PPP link

providing multilink capabilities over the PPP link

negotiating options for the IP protocol

identifying fault conditions for the PPP link

enhancing security by providing callback over PPP

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

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.

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

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

when its employees become distributed across many branch locations

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

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

so that the switch stops forwarding traffic

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 attacker can execute arbitrary code on the switch

Which statement describes a characteristic of standard IPv4 ACLs?

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

They are configured in the interface configuration mode.

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.

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.

This host does not have a default gateway configured.

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

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

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

Which IOS log message level indicates the highest severity level?

level 4

level 1

level 0

level 7

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

access server

CMTS

DSLAM