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“CCNP ’s Building Cisco Multilayer Switched Networks”, also known as 642-812 exam, is a Cisco certification.
Product Description:
Exam Number/Code: 642-812
Exam Name: CCNP

“CCNP ’s Building Cisco Multilayer Switched Networks”, also known as 642-812 exam, is a Cisco certification.
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With the complete collection of questions and answers, TestInside has assembled to take you through 217 questions 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.

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QUESTION 1:
Certkiller uses layer 3 switches in the Core of their network. Which method of Layer
3 switching uses a forwarding information base (FIB)?
A. Topology-based switching
B. Demand-based switching
C. Route caching
D. Flow-based switching
E. None of the above
Answer: A
Explanation:
The Layer 3 engine (essentially a router) maintains routing information, whether from
static routes or dynamic routing protocols. Basically, the routing table is reformatted into
an ordered list with the most specific route first, for each IP destination subnet in the
table. The new format is called a Forwarding Information Base (FIB) and contains
routing or forwarding information that the network prefix can reference.
In other words, a route to 10.1.0.0/16 might be contained in the FIB, along with routes to
10.1.1.0/24 and 10.1.1.128/25, if those exist. Notice that these examples are increasingly
more specific subnets. In the FIB, these would be ordered with the most specific, or
longest match, first, followed by less specific subnets. When the switch receives a packet,
it can easily examine the destination address and find the longest match entry in the FIB.
The FIB also contains the next-hop address for each entry. When a longest match entry is
found in the FIB, the Layer 3 next-hop address is found, too.
QUESTION 2:
You need to design the VLAN scheme for the Certkiller network. Which two
statements are true about best practices in VLAN design? (Select two)
A. Routing should occur at the access layer if voice VLANs are utilized. Otherwise,
routing should occur at the distribution layer.
B. Routing should always be performed at the distribution layer.
C. VLANs should be localized to a switch.
D. VLANs should be localized to a single switch unless voice VLANs are being utilized.
E. Routing should not be performed between VLANs located on separate switches.
Answer: B, C
Explanation:
In the distribution layer, uplinks from all access layer devices are aggregated, or come
642-812
Actualtests.com – The Power of Knowing
together. The distribution layer switches must be capable of processing the total volume
of traffic from all the connected devices. These switches should have a port density of
high-speed links to support the collection of access layer switches.
VLANs and broadcast domains converge at the distribution layer, requiring routing,
filtering, and security. The switches at this layer must be capable of performing
multilayer switching with high throughput. Only certain Catalyst switch models can
provide multilayer switching; be sure to understand which ones can do this.
A switched environment offers the technology to overcome flat network limitations.
Switched networks can be subdivided into VLANs. By definition, a VLAN is a single
broadcast domain. All devices connected to the VLAN receive broadcasts from other
VLAN members. However, devices connected to a different VLAN will not receive those
same broadcasts. (Naturally, VLAN members also receive unicast packets directed
toward them from other VLAN members.)
A VLAN consists of defined members communicating as a logical network segment. In
contrast, a physical segment consists of devices that must be connected to a physical
cable segment. A VLAN can have connected members located anywhere in the campus
network, as long as VLAN connectivity is provided between all members. Layer 2
switches are configured with a VLAN mapping and provide the logical connectivity
between the VLAN members.
QUESTION 3:
The Certkiller la network is shown below:
On the basis of the information provided in the exhibit above, which two sets of
procedures are best practices for Layer 2 and 3 failover alignment? (Select two)
642-812
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A. Configure the Certkiller 1 switch as the standby HSRP router and the STP root for
VLANs 11 and 110. Configure the Certkiller 2 switch as the standby HSRP router and the
STP root for VLANs 12 and 120.
B. Configure the Certkiller 1 switch as the active HSRP router and the backup STP root
for VLANs 11 and 110. Configure the Certkiller 2 switch as the active HSRP router and
the backup STP root for VLANs 12 and 120.
C. Configure the Certkiller 2 switch as the active HSRP router and the STP root for all
VLANs. Configure the Certkiller 1 switch as the standby HSRP router and backup STP
root for all VLANs.
D. Configure the Certkiller 1 switch as the active HSRP router and the STP root for all
VLANs. Configure the Certkiller 2 switch as the standby HSRP router and backup STP
root for all VLANs.
E. Configure the Certkiller 1 switch as the standby HSRP router and the backup STP root
for VLANs 12 and 120. Configure the Certkiller 2 switch as the standby HSRP router and
the backup STP root for VLANs 11 and 110.
F. Configure the Certkiller 1 switch as the active HSRP router and the STP root for
VLANs 11 and 110. Configure the Certkiller 2 switch as the active HSRP router and the
STP root for VLANs 12 and 120.
Answer: E, F

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