CCNA 3 Flashcards by NEVAR FRANK

Which two server types are used to support DNS lookup?

authoritative name server

name resolver

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which two functions can be performed by a local DNS server?

forwarding name resolution requests to an external DNS server
resolving names locally

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Which part of the PPPoE server configuration contains the information used to assign an IP address to a PPPoE client?

virtual-template interface

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During which phase of PPoE is PPP authentication performed?

the PPP Session phase

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Which type of interface can negotiate an IP address for a PPPoE client

dialer

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Which three statements about MPLS is true?

It operates between Layer 2 and Layer 3
It can carry multiple protocols, including Ipv4 and IPv6
It uses labels to separate and forward customer traffic

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Which type of topology is required by DMVPN?

hub and spoke

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Which circumstances can cause a GRE tunnel to be in an up/down state?

The tunnel interface is down
A valid route to the destination address is missing from the routing table.
The tunnel address is routed through the tunnel itself.

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Which technology supports multiple dynamic secure connections on an unsecured transport network?

DMVPN

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Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?

cdp run

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Which statement about LLDP is true?

It is configured in global configuration mode.

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What is true about Cisco Discovery Protocol?

It is proprietary protocol

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Which command you enter on a switch to display the ip address associated with connected devices?

show cdp traffic

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which command would you configure globally on a Cisco router that to re-enable CDP if it was disabled by the administrator?

cdp run

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Which command would you configure globally on a Cisco router that to re–enable CDP if it was disabled by the administrator?

cdp run

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Which two pieces of information can be shared with LLDP TLVs?

device management address

device type

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Which two statements about LLDP are true?

It uses mandatory TLVs to discover the neighboring deices

It enables systems to learn about one another over the data-link layer

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What two statements about CDP are true?

CDP run on the data link layer only

CDP uses TLVs to share device informaiton

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Which LLDP extension provides additional support for VoIP?

LLDP-MED

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Which two TLVs does LLDP support

system description

management address

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Which command on a switch, to enable neighbor discovery in a multivendor enviornment?

lldp run

Which two statements about IPv4 multicast traffic are true?

It is the most efficient way to deliver data to multiple receivers
It uses a minimum amount of network bandwidth.

What are benefits of private IPv4 IP addresses?

They are less costly than public IP addresses.

They can be assigned to devices without Internet connections.

What will happen if a private IP address is assigned to a public interface connected to an ISP?

Addresses in a private range will not be routed on the internet backbone.

Which destination IP address can a host use to send one message to multiple devices across different subnets?

239.255.0.1

Which RFC was created to alleviate the depletion of IPv4 public addresses

RFC 1918

Which IPv6 feature is supported in IPv4 but is not commonly used

anycast

What are two beneifts of private IPv4 IP addresses?

They are less costly than public IP addresses | they can be assigned to devices without Internet connections.

What are two benefits of private IPv4 addresses

They can be implemented without requiring admin to coordinate with IANA Provide network isolation from the internet

Which address class includes network 191.168.0.1/27

Class B

Which two options are the best reasons to use an IPv4 private IP space?

to enable intra-enterprise communication | to conserve global address space

In which two circumstances are private IPv4 addresses appropirate

On hosts that communicates only with other internal hosts. | on hosts that require minimal access to external resources.

Which two statements are true for multicast MAC address directions?

01:00:5E:xx:xx:xx | one to many

Which switching method duplicates the first six bytes of a frame before making a switching decision?

cut-through switching

What could be the issue if a host can connect to other hosts but not a switch

Ip default-gateway needs to be configured.

What is the command to set a hostname on a switch?

switch(config)#hostname xxxx

What is the effect of switch#(config)interface VLAN 1 switch#(config-if)ip address 192.168.2.2 255.255.255.0 switch(config-if)# end

it configures an inactive switch virtual interface

Which statement about switch access ports is true?

They drop packets with 802.1Q tags

Which feature allows a device to use a switchport that is configured for half-duplex to access the network?

CSMA/CD

Which option is an invalid hostname for a switch?

Switch-Cisco!

Which statement about unicast frame forwarding on a switch is true?

If the destination MAC address is unknown, the frame is flooded to every port that is configured in the same VLAN except on the port that it was received on.

Two hosts are attached to a switch with the default configuration. Which statement about the configuration is true?

the two hosts are in the same broadcast domain

Configuration of which option is required on a cisco switch for the cisco IP phone to work?

the interface as an access port to allow the voice VLAN ID

Which three statements accurately describe layer 2 Ethernet switches?

Microsegmentation decreases the number of collisions on the network. In a properly functioning network with redundant switched paths, each switched segment will contain one root bridge with all its ports in the forwarding state. All other switches in that broadcast domain will have only one root port. Establishing vlans increases the number of broadcast domains.

If a switch is set to full duplex and a neighbor set to half duplex what will happen to the traffic

It will get dropped (Input errors)

What will a switch do with traffic addressed to a host with a mac address that is not in its mac address-table?

Flood the data out all its ports except the port from which the data originated.

Which utility can you use to determine whether a switch can send echo requests and replies

ping

on which type of port can switches interconnect for multi-VLAN communication

Trunk port

Which two types of information are held in the MAC address table?

MAC address | port numbers

What type of MAC address is aged automatically by the switch?

Dyanmic

Which of the three options are switchbox configurations that can always avoid duplex mismatch errors between two switches?

Set both sides of the connection to full duplex Set both sides of the connection to auto-negotiate set both sides of the connection to half duplex

What two results would occur if a hub were to be replaced with a switch that is configured with one Ethernet VLAN?

The number of collision domains would increase | The number of broadcast domains would remain the same.