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CCNA 840-816 Chapter 1
Configure, verify and troubleshoot a switch with VLANs and interswitch communications
67
Computer Networking
Professional
05/25/2011

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Term
What does VTP stand for?
Definition
VLAN Trunking Protocol
Term
VTP is a Cisco proprietary Layer __ protocol that makes the management and administration of VLANs easier and more efficient.
Definition
2
Term
The VLAN trunking protocol uses _______________________ for VLAN communications between two or more switches.
Definition
layer 2 trunk frames
Term
A VTP advertisement contains the _______, _________ and ___________ for each VLAN.
Definition
VLAN ID, VLAN name and VLAN type
Term
The VTP configuration ___________ is used for keeping track of the newest information.
Definition
revision number
Term
What does a higher VTP configuration revision number mean?
Definition
A newer revision
Term
What are the three VTP modes that Cisco uses?
Definition
Server mode, Client Mode, and Transport mode
Term
What VTP mode are switches in by default?
Definition
Server mode
Term
In each domain there has to be a server for ___________, ___________, or ___________.
Definition
addition, deletion or modifications
Term
A switch in server mode is responsible for_________________ and _________________ with other switches in the domain.
Definition
VTP advertisements and synchronizing received VTP information
Term
VLANs cannot be created, deleted or modified in this mode.
Definition
Client
Term
VTP advertisements are relayed in this mode.
Definition
Client Mode
Term
A switch in this mode does not participate in the VTP process.
Definition
Transparent
Term
In VTP version 1 transparent switches do not relay VTP information to other switches unless ________________________.
Definition
the VTP domain and VTP version number matches between the switches
Term
In VTP version 2 transparent switch acts as ___________________.
Definition
a VTP relay despite the difference in domain name
Term
What are the two ways to configure VTP in Cisco switches?
Definition
Global configuration mode, VLAN database mode
Term
What is the command to configure VTP domain name?
Definition
Switch(config)# vtp domain domin-name
Term
How long can a VTP domain name be?
Definition
32 characters
Term
What is the command to configure the VTP mode?
Definition
Switch(config)# vtp mode {server | client | transparent}
Term
What is the command to set a VTP password?
Definition
Switch(config)# vtp password password
Term
What happens when a VTP password is configured?
Definition
A MD5 digit or hash code is computed and sent in VTP advertisements.
Term
What is the command to configure a VTP version?
Definition
Switch(config)# vtp version {1 | 2}
Term
The _____________ command is very important command for checking various parameters for the VTP configuration process.
Definition
show vtp status
Term
What is the IEEE designation for Spanning Tree Protocol?
Definition
802.1D
Term
______ is used in switching topologies to provide a loop free path in the network.
Definition
STP
Term
Why is STP necessary to prevent layer 2 loops from causing broadcast storms?
Definition
Because there are no TTL values in Layer 2 frames
Term
How does STP stop loops and broadcast storms from happening?
Definition
By blocking some ports and forwarding only the required ones
Term
Spanning-tree protocol is used to ensure one loop free path throughout the bridge domain. This single loop free path is a top down tree in which the source of the tree is the _________.
Definition
Root bridge
Term
Root bridge election is determined by the ___________.
Definition
bridge-ID
Term
The bridge with the __________ bridge-ID will be elected the root bridge.
Definition
lowest
Term
It is of 2 bytes and default to 32,768 on every catalyst switch. It can have value from 0 to 65,535
Definition
Bridge Priority
Term
The port on the switch that has least cost path to the back to the root is called the ___________.
Definition
root port
Term
In this 802.1D state the ports are administratively down.
Definition
Disabled State
Term
In this 802.1D state only the BPDUs are received by the switch. The switch remains in this state for 20 seconds.
Definition
Blocking State
Term
In this 802.1D state BPDUs are sent and received by the switch. The switch remains in this state for 15 seconds.
Definition
Listening State
Term
In this 802.1D state the bridging table is built. The switch remains in this state for 15 sec.
Definition
Learning State
Term
In this 802.1D state the switch finally starts to send and receive data.
Definition
Forwarding State
Term
What is the advantage of RSTP over STP?
Definition
RSTP has a much faster convergence time
Term
What is the IEEE designation of RSTP?
Definition
802.1w
Term
In 802.1w each port on the switch that has the best root path cost to the root bridge is called the ___________.
Definition
root port
Term
In 802.1w The port on a switch that has the best root path cost to the root is called the ____________.
Definition
designated port
Term
In 802.1w This is the port that has an alternate path to the root switch. This path is less desirable and different than the root port.
Definition
Alternate Port
Term
In 802.1w a _________ takes over as soon as the designated port is down.
Definition
backup port
Term
What does PVST stand for?
Definition
Per-VLAN Spanning Tree
Term
______________ operates a separate instance of STP for each individual VLAN.
Definition
Per-VLAN Spanning Tree (PVST)
Term
What type of encapsulation between switches must be used by PVSTP?
Definition
Per-VLAN Spanning Tree (PVST)
Term
In networks where PVST and CST coexist, ______________ problems occur.
Definition
interoperability
Term
What is the difference between PVSTP and PVSTP+
Definition
PVSTP+ has the ability to work with both PVSTP and switches using CST
Term
The 802.1Q is an IEEE ___________ protocol.
Definition
trunking
Term
In 802.1Q, Frames that belong to ____________ are not encapsulated.
Definition
native VLAN
Term
A _________ defines the virtual combination of switch ports resulting in a virtual domain or broadcast domain.
Definition
VLAN
Term
What is a VLAN?
Definition
A VLAN is simply an administratively defined subset of switch ports that are in the same broadcast domain.
Term
With VLANs and IP, best practices dictate a one-to-one relationship between VLANs and __________.
Definition
IP subnets
Term
What are the two ways to configure VLAN's?
Definition
Static and Dynamic
Term
We need a _________ device to make device in separate VLANs communicate.
Definition
Routing
Term
One of the most important tools used to verify network connectivity is _______________.
Definition
CDP (Cisco Discovery Protocol)
Term
_______ gives us a brief picture of the network diagram in the case of switches or routers.
Definition
CDP
Term
What command will disable CDP on an entire device?
Definition
cdp no run
Term
The __________________ command displays the information only about the single interface.
Definition
show interface
Term
When running a show interface command, what is the problem if the Line status is administratively down, the Protocol status is down, and the interface status is disabled?
Definition
The interface needs to be configured with a no shutdown command
Term
When running a show interface command, what is the problem if the Line status is down, the Protocol status is down, and the interface status is Notconnect?
Definition
Power, cable faults, and/or speed mismatches
Term
When running a show interface command, what is the problem if the Line status is down, the Protocol status is down, and the interface status is Err-disabled?
Definition
Interface has been disabled due to security violation or port security
Term
This command displays the speed and duplex on all the ports of the switch
Definition
show interfaces status
Term
We can use ___________ to provide layer 2 security.
Definition
switch port security
Term
_____________ allows a switch to communicate with its directly connected neighbors about what VLANs they have locally assigned and/or are in the transit path for.
Definition
VTP pruning
Term
What VLAN cannot be pruned?
Definition
VLAN 1
Term
What is the benefit of VTP pruning?
Definition
It automatically removes unnecessary VLAN traffic from a trunk interface
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