Free pass4sure ccnp Bcmsn 642-812 v2.93 Download

BCMSN – Building Converged Cisco Multilayer Switched Networks : 642-812 Exam

Exam Number/Code: 642-812
Exam Name: BCMSN – Building Converged Cisco Multilayer Switched Networks
VUE Code: 642-812
Questions Type: Single choice,
Exam Language(s): English

“BCMSN – Building Converged Cisco Multilayer Switched Networks”, also known as 642-812 exam, is a Cisco certification.
Preparing for the 642-812 exam Searching 642-812 Test Questions, 642-812 Exam, 642-812 Dumps

With the complete collection of questions and answers Q&as with Expert Explanations, Pass4sure has assembled to take you through 286 Q&As to your 642-812 Exam preparation. In the 642-812 exam resources, you will cover every field and category in CCNP helping to ready you for your successful Cisco Certification

The Building Converged Cisco Multilayer Switched Networks (BCMSN 642-812) is a qualifying exam for the Cisco Certified Network Professional CCNP® and the Cisco Certified Design Professional CCDP® certifications. The BCMSN 642-812 exam will certify that the successful candidate has important knowledge and skills necessary to implement scalable multilayer switched networks. The exam includes topics on Campus Networks, describing and implementing advanced Spanning Tree concepts, VLANs and Inter-VLAN routing, High Availability, Wireless Client Access, Access Layer Voice concepts, and minimizing service Loss and Data Theft in a Campus Network

QUESTION 26:
What’s true with VLAN port associations? (Select all that apply)
A. ASIC enhances the performance of the association
B. VLAN membership is based on Port through port-to-VLAN association.
C. Routing table enhances the performance of the association
D. VLAN membership is based on Port through port-to-WAN ID association.
Answer: A, B
Explanation:
ASIC (Application Specific Integrated Circuits), layer 2 switches have ASIC chips to
help them with wire speed hardware switching. With ASIC, the performance of this
association is very high, and is more desirable than the complex routing table lookup type
of operation.
VLAN membership is based on Port through port-to-VLAN association.
642-812
www.actualtest.org- The Power of Knowing
Incorrect Answers:
C: Routing tables are not consulted when transferring VLAN traffic since VLANs are
handled at layer 2 and routing occurs at layer 3.
D: VLAN associations deal with layer two VLANs, not layer 3 WAN IDs.
QUESTION 27:
Which Cisco switch command would you use to map VLANs 10 to 20 to MST
instance 1?
A. Switch(config)#vlan 10-20 instance 1
B. Switch(config)#instance 1 vlan 10-20
C. Switch(config-mst)#vlan 10-20 instance 1
D. Switch(config-mst)#instance 1 vlan 10-20
E. None of the above
Answer: D
Explanation:
Beginning in privileged EXEC mode, follow these steps to specify the MST region
configuration and enable MSTP. This procedure is required.
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 spanning-tree mst configuration Enter MST configuration mode.
Step3 instance instance-id vlan vlan-range Map VLANs to an MST instance.
For instance-id, the range is 1 to 15.
For vlan vlan-range, the range is 1 to 4094.
When you map VLANs to an MST instance, the mapping is incremental, and the VLANs
specified in the command are added to or removed from the VLANs that were previously
mapped.
To specify a VLAN range, use a hyphen; for example, instance 1 vlan 1-63maps VLANs
1 through 63 to MST instance 1.
To specify a VLAN series, use a comma; for example, instance 1 vlan 10, 20, 30maps
VLANs 10, 20, and 30 to MST instance 1.
Step4 name name Specify the configuration name. The name string has a maximum
length of 32 characters and is case sensitive.
Step5 revision version Specify the configuration revision number. The range is 0 to
65535.
Step6 show pending Verify your configuration by displaying the pending configuration.
Step7 exit Apply all changes, and return to global configuration mode.
Step8 spanning-tree mode mst Enable MSTP. RSTP is also enabled.
Caution
Changing spanning-tree modes can disrupt traffic because all spanning-tree
instances are stopped for the previous mode and restarted in the new mode.
You cannot run both MSTP and PVST+ or both MSTP and rapid PVST+ at the same
642-812
www.actualtest.org – The Power of Knowing
time.
Step9 end Return to privileged EXEC mode.
Step10 show running-config Verify your entries.
Step11 copy running-config startup-config (Optional) Save your entries in the
configuration file.
Reference:

http://www.cisco.com/en/US/products/hw/switches/ps5528/products_configuration_guide_chapter09186a00802

QUESTION 28:
Which Cisco IOS command assigns a Catalyst switch port to VLAN 10?
A. switchport mode vlan 10
B. switchport trunk vlan 10
C. switchport access vlan 10
D. switchport mode access vlan 10
Answer: C
Explanation:
Switchport access:
Use the switchport access interface configuration command to configure a port as a
static-access port. The port operates as a member of the configured VLAN.
Use the no form of this command to reset the access mode to the default VLAN for the
switch.
Syntax
switchport access vlan vlan-id
no switchport access vlan vlan-id
Syntax Description Introduction
vlan vlan-id
ID of the VLAN. Valid IDs are from 1 to 1005. Do not enter leading zeroes.
Defaults
All ports are in static-access mode in VLAN 1.
Command Modes
Interface configuration.
Usage Guidelines
An access port can be assigned to only one VLAN.
When the no switchport access vlan form is used, the access mode is reset to static access
on VLAN 1.
Example
The following example shows how to assign a port to VLAN 2 (instead of the default
VLAN 1):
Switch(config-if)# switchport access vlan 2
You can verify the previous command by entering the show interface interface-id
642-812
www.actualtest.org – The Power of Knowing
switchport command in privileged EXEC mode and examining information in the
Administrative Mode and Operational Mode rows.
QUESTION 29:
SIMULATION
You are connected to a Catalyst switch via a console cable as shown below:
You work as a systems administrator at the PassGuide .com main office in the greater
Toronto area. The number of employees on your floor has exceeded the
infrastructure of your current network equipment. Your CTO has ordered a new
switch chassis, but it’s going to be another 6-8 working days until it arrives. In the
meantime you can to connect 24 new workstations to an old Cisco Catalyst 2950,
which your junior administrator has just finished erasing, and rebooting (to purge
old VLAN information).
Your tasks are to:
* disable VTP
* Ensure that all non-trunking interfaces do not participate in Spanning Tree by default
by globally configuring PortFast.
For the following two tasks, you are required to use global commands to configure
the ports:
1. Ensure all FastEthernet interfaces are in permanent non-trunking mode.
2. Place FastEthernet interfaces 0/12 through 0/24 in VLAN 20.
Start by clicking on host CertK iA.
Answer:
Explanation:
enable
configure terminal
Switch(config)#vtp mode transparent (disable vtp)
Switch(config)#spanning-tree portfast default (Globally, enable portfast on all ports)
Switch(config)#interface range fa0/1 – 24 (select interfaces)
Switch(config-if)#switchport mode access (set ports for access mode, NOT Trunking)
switch(config)#interface range fa0/12 – 24 (The 4th task is to “Place FastEthernet interfaces 0/12 through
0/24 in VLAN20″)
switch(config-if-range)#switchport access vlan 20
switch(config-if-range)#end
exit
Switch(config-if)#interface range fa0/12 – 24 (select interfaces)
Switch(config-if)#switchport access vlan 20 (assign ports to vlan 20)
end
copy running-config startup-config (save configuration)
642-812
www.actualtest.org – The Power of Knowing
The role of the VLAN Trunking Protocol (VTP) is to maintain VLAN configuration
consistency across the entire network. VTP is a messaging protocol that uses Layer 2
trunk frames to manage the addition, deletion, and renaming of VLANs on a
network-wide basis from a centralized switch that is in the VTP server mode. VTP is
responsible for synchronizing VLAN information within a VTP domain. This reduces the
need to configure the same VLAN information on each switch.
Transparent
VTP transparent switches do not participate in VTP. A VTP transparent switch does not
advertise its VLAN configuration, and does not synchronize its VLAN configuration
based on received advertisements. However, in VTP Version 2, transparent switches do
forward VTP advertisements that the switches receive out their trunk ports. VLANs can
be configured on a switch in the VTP transparent mode, but the information is local to
the switch (VLAN information is not propagated to other switches) and is stored in
NVRAM.
Spanning tree PortFast is a Catalyst feature that causes a switch or trunk port to enter the
spanning tree Forwarding state immediately, bypassing the Listening and Learning states.
IOS-based switches only use PortFast on access ports connected to end stations.
When a device is connected to a port, the port normally enters the spanning tree Listening
state. When the Forward Delay timer expires, the port enters the Learning state. When
the Forward Delay timer expires a second time, the port is transitioned to the Forwarding
or Blocking state. When PortFast is enabled on a switch or trunk port, the port is
immediately transitioned to the Forwarding state. As soon as the switch detects the link,
the port is transitioned to the Forwarding state (less than 2 seconds after the cable is
plugged in).
PassGuide 1(Config-if-range)#switchport mode access : Brings the interfaces into access
mode
PassGuide 1(Config-if-range)#spanning-tree portfast : Enables the PortFast on interface.
PassGuide 1(Config-if-range)#switchport access vlan 20 : Makes the members of vlan 20
QUESTION 30:
You are the network administrator of a network with the active VLANs: 1, 2, 3, 4,
10, 20, and 50. However, you only need to carry VLANs 1,2,10 and 20 on a trunk.
Which of the following commands should you use to fulfill this requirement? (Select
all that apply)
A. switchport trunk allowed vlan remove 3,4,50
B. switchport trunk allowed vlan except 3,4,50
C. switchport trunk allowed vlan except 1,2,10,20
D. switchport trunk allowed vlan add 1,2,10,20
E. switchport trunk disallowed vlan remove 3,4,50
F. switchport trunk disallowed vlan add 3,4,50
Answer: A, B, D