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Interconnecting Cisco Networking Devices Part 2 : 640-816 Exam

Exam Number/Code: 640-816
Exam Name: Interconnecting Cisco Networking Devices Part 2

“Interconnecting Cisco Networking Devices Part 2″, also known as 640-816 exam, is a Cisco certification.
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With the complete collection of questions and answers Q&as with Expert Explanations, Pass4sure has assembled to take you through 147 Q&As to your 640-816 Exam preparation. In the 640-816 exam resources, you will cover every field and category in CCNA helping to ready you for your successful Cisco Certification.

QUESTION 41:
How could the PassGuide corporation benefit from using VLANs on their network?
(Select three answer choices.)
A. VLANs allow access to network services based on department, not physical location.
B. VLANs utilize packet filtering to enhance network security.
C. VLANs provide a low-latency, high bandwidth internetworking alternative.
D. VLANs provide a method of communication between IP addresses in large networks.
E. VLANs establish segmented broadcast domains in switched networks.
F. VLANs can greatly simplify adding, moving, or changing hosts on the network.
Answer: A, E, F
Explanation:
VLANs establish broadcast domains in switched networks, so by virtue of having the
option to create many efficient broadcast domains, congestion is reduced and network
throughput is greatly enhanced. VLANs allow networks to be divided by department or
resource needs, rather then by physical location. When people move departments, leave a
department, or join a department, administration is easy and convenient with a few
keystrokes.
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Incorrect Answers:
B, D. These would be router functions at layer 3. Switches and VLANs operate at layer 2
of the OSI model.
C. The use of VLANs may actually increase the latency in some cases, as traffic from
one VLAN to the other will need to be routed.
QUESTION 42:
Two VLANs are connected to a switch as follows:
In this PassGuide network segment, hosts on the same VLAN can communicate with
each other but are unable to communicate with hosts on different VLANs. What is
needed to allow communication between these two PassGuide VLANs?
A. A router with subinterfaces configured on the physical interface that is connected to
the switch
B. A router with an IP address on the physical interface that is connected to the switch
C. A switch with a trunk link that is configured between the switches
D. A switch with an access link that is configured between the switches
E. None of the above
Answer: A
QUESTION 43:
You are working as a network technician at PassGuide University, when you get a
call from the Engineering Faculty. They’re complaining that they’re receiving
obsolete information from the Business Faculty’s network traffic broadcasts.
What can you do to contain the Business Faculty’s broadcast while still keeping it
connected to the internet and the enterprise services of the University? (Select all
valid answer choices)
A. Use half and full-duplex Ethernet on the Engineering Department LAN
B. Establish a VTP domain to minimize the obsolete traffic
C. Change the switch IP address of the switch
D. Create separate VLANs and subnets for the two departments and route between the
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two
E. Provide greater bandwidth to the Engineering Department LAN
F. Place the business department on a separate subnet and route between networks
Answer: D, F
Explanation:
In order to prevent the broadcast and link level multicast traffic separated between the
departments, they need to be isolated at layer two. This can be accomplished in two
ways. The first is to create separate VLANs and place each department into a different
one. The second method would be to separate the two departments into two completely
different networks, and route between them.
Incorrect Answers:
A. Mixing the use of half and full duplex will make no difference to the number of
broadcasts sent.
B. Trunking is only useful in networks that already contain VLANs.
C. This will make no difference, as all users will still be contained within the same IP
subnet.
E. The amount of bandwidth involved will not have any impact on the amount of
broadcasts that are sent and received.
QUESTION 44:
Two PassGuide switches are shown below:
The switches have been configured with static VLANs as shown. During testing, the
network administrator notices that VLAN 20 on SwitchA has no connectivity with
VLAN 30 on SwitchB. What should the network administrator do?
A. Configure the interconnected ports on SwitchA and SwitchB into access mode.
B. Connect the two switches with a straight-through cable.
C. Add a Layer 3 device to connect VLAN 20 and VLAN 30.
D. Configure the management VLAN with IP address.
E. Ensure that the VIP passwords match on both switches.
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Answer: C
Explanation:
Network devices in different VLANs cannot communicate with one another without a
router to route traffic between the VLANs. In most network environments, VLANs are
associated with individual networks or subnetworks.
For example, in an IP network, each subnetwork is mapped to an individual VLAN.
Configuring VLANs helps control the size of the broadcast domain and keeps local
traffic local. However, when an end station in one VLAN needs to communicate with an
end station in another VLAN, interVLAN communication is required. This
communication is supported by interVLAN routing. You configure one or more routers
to route traffic to the appropriate destination VLAN.
The diagram below shows a basic interVLAN routing topology. SwitchA is in VLAN 10
and SwitchB is in VLAN20. The router has an interface in each VLAN.
Basic InterVLAN Routing Topology:
When HostA in VLAN10 needs to communicate with HostB in VLAN10, it sends a
packet addressed to that host. SwitchA forwards the packet directly to HostB, without
sending it to the router.
When HostA sends a packet to HostC in VLAN20, SwitchA forwards the packet to the
router, which receives the traffic on the VLAN10 interface. The router checks the routing
table, determines the correct outgoing interface, and forwards the packet out the
VLAN20 interface to SwitchB. SwitchB receives the packet and forwards it to HostC.
Reference:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_5_2/layer3/routing.htm#wp13354

QUESTION 45:
The PassGuide network is displayed below:
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Study the exhibit: the topology and the partial switch command output.
The internetwork shown in the exhibit is experiencing connectivity problems. Host
PassGuide 1 is unable to ping Host PassGuide 2.
What needs to be done to enable these hosts to ping each other?
A. The gateway on Host PassGuide 1 needs to be changed.
B. The IP address on Host PassGuide 2 needs to be reconfigured.
C. VLAN2 must be named.
D. The Fa0/1 interface on the PassGuide A switch must be configured as a trunk port.
E. Switch port Fa0/1 must be moved to a different VLAN.
Answer: D

Questions and Answers : 147 Q&As
Updated: 2008-10-11

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