CCNA 3 Flashcards
Which two server types are used to support DNS lookup?
authoritative name server
name resolver
which two functions can be performed by a local DNS server?
forwarding name resolution requests to an external DNS server
resolving names locally
Which part of the PPPoE server configuration contains the information used to assign an IP address to a PPPoE client?
virtual-template interface
During which phase of PPoE is PPP authentication performed?
the PPP Session phase
Which type of interface can negotiate an IP address for a PPPoE client
dialer
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
Which type of topology is required by DMVPN?
hub and spoke
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.
Which technology supports multiple dynamic secure connections on an unsecured transport network?
DMVPN
Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?
cdp run
Which statement about LLDP is true?
It is configured in global configuration mode.
What is true about Cisco Discovery Protocol?
It is proprietary protocol
Which command you enter on a switch to display the ip address associated with connected devices?
show cdp traffic
which command would you configure globally on a Cisco router that to re-enable CDP if it was disabled by the administrator?
cdp run
Which command would you configure globally on a Cisco router that to re–enable CDP if it was disabled by the administrator?
cdp run
Which two pieces of information can be shared with LLDP TLVs?
device management address
device type
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
What two statements about CDP are true?
CDP run on the data link layer only
CDP uses TLVs to share device informaiton
Which LLDP extension provides additional support for VoIP?
LLDP-MED
Which two TLVs does LLDP support
system description
management address
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.
