Testking cisco 640-816
Vendor: cisco
Exam Code: 640-816
Exam Name: Interconnecting Cisco Networking Devices Part 2 (CCNA )
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QUESTION 1:
Switches CK1 and CK2 are connected as shown below:
Study the Exhibit carefully. Which ports could safely be configured with Port Fast?
(Choose two)
A. Switch CK1 – port Fa1/2
B. Switch CK2 – port Fa1/2
C. Switch CK1 – port Fa1/3
D. Switch CK2 – port Fa1/3
E. Switch CK1 – port Fa1/1
F. None of the ports should use port fast
Answer: C, D
Explanation:
Using Port Fast:
1. Immediately brings an interface configured as an access or trunk port to the forwarding
state from a blocking state, bypassing the listening and learning states
2. Normally used for single server/workstation can be enabled on a trunk
So, Port fast can only be enabled to a switch port attaching to workstation or a server
.Reference: http://www.911networks.com/node/273
QUESTION 2:
You need to configure two Certkiller switches to exchange VLAN information.
Which protocol provides a method of sharing VLAN configuration information
between these two switches?
A. STP
B. 802.1Q
C. VLSM
D. ISL
E. VTP
F. HSRP
G. None of the above
Answer: E
Explanation:
VLAN Trunking Protocol (VTP) is a Cisco proprietary Layer 2 messaging protocol that
manages the addition, deletion, and renaming of VLANs on a network-wide basis.
Virtual Local Area Network (VLAN) Trunk Protocol (VTP) reduces administration in a
switched network. When you configure a new VLAN on one VTP server, the VLAN is
distributed through all switches in the domain. This reduces the need to configure the
same VLAN everywhere. To do this VTP carries VLAN information to all the switches
in a VTP domain. VTP advertisements can be sent over ISL, 802.1q, IEEE 802.10 and
LANE trunks. VTP traffic is sent over the management VLAN (VLAN1), so all VLAN
trunks must be configured to pass VLAN1. VTP is available on most of the Cisco
Catalyst Family products.
QUESTION 3:
Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which
statement below accurately describes a benefit of doing this?
A. VTP will allow physically redundant links while preventing switching loops
B. VTP will allow switches to share VLAN configuration information
C. VTP will allow a single port to carry information to more than one VLAN
D. VTP will allow for routing between VLANs
E. None of the above
Answer: B
QUESTION 4:
Two Certkiller switches are connected together as shown in the diagram below:
Exhibit:
Based on the information shown above, what will be the result of issuing the
following commands:
Switch1(config)# interface fastethernet 0/5
Switch1(config-if)# switchport mode access
Switch1(config-if)# switchport access vlan 30
A. The VLAN will be added to the database, but the VLAN information will not be
passed on to the Switch2 VLAN database.
B. The VLAN will be added to the database and VLAN 30 will be passed on as a VLAN
to add to the Switch2 VLAN database.
C. The VLAN will not be added to the database, but the VLAN 30 information will be
passed on as a VLAN to the Switch2 VLAN database.
D. The VLAN will not be added to the database, nor will the VLAN 30 information be
passed on as a VLAN to the Switch2 VLAN database.
E. None of the above
Answer: A
Explanation:
The three VTP modes are described below:
Server: This is the default for all Catalyst switches. You need at least one server in your
VTP domain to propagate VLAN information throughout the domain. The switch must
be in server mode to be able to create, add, or delete VLANs in a VTP domain. You must
also change VTP information in server mode, and any change you make to a switch in
server mode will be advertised to the entire VTP domain.
Client: In client mode, switches receive information from VTP servers; they also send
and receive updates, but they can’t make any changes. Plus, none of the ports on a client
switch can be added to a new VLAN before the VTP server notifies the client switch of
the new VLAN. Here’s a hint: if you want a switch to become a server, first make it a
client so that it receives all the correct VLAN information, then change it to a
server-much easier!
Transparent: Switches in transparent mode don’t participate in the VTP domain, but
they’ll still forward VTP advertisements through any configured trunk links. These
switches can’t add and delete VLANs because they keep their own database-one they do
not share with other switches. Transparent mode is really only considered locally
significant.
In our example, the switch is configured for transparent mode. In transparent mode the
local VLAN information can be created but that VLAN information will not be
advertised to the other switch.
QUESTION 5:
A Certkiller switch is configured with all ports assigned to VLAN 2. In addition, all
ports are configured as full-duplex FastEthernet. What is the effect of adding switch
ports to a new VLAN on this switch?
A. The additions will create more collisions domains.
B. IP address utilization will be more efficient.
C. More bandwidth will be required than was needed previously.
D. An additional broadcast domain will be created.
E. The possibility that switching loops will occur will increase dramatically.
Answer: D
Explanation:
A VLAN is a group of hosts with a common set of requirements that communicate as if
they were attached to the same wire, regardless of their physical location. A VLAN has
the same attributes as a physical LAN, but it allows for end stations to be grouped
together even if they are not located on the same LAN segment.
Networks that use the campus-wide or end-to-end VLANs logically segment a switched
network based on the functions of an organization, project teams, or applications rather
than on a physical or geographical basis. For example, all workstations and servers used
by a particular workgroup can be connected to the same VLAN, regardless of their
physical network connections or interaction with other workgroups. Network
reconfiguration can be done through software instead of physically relocating devices.
Cisco recommends the use of local or geographic VLANs that segment the network
based on IP subnets. Each wiring closet switch is on its own VLAN or subnet and traffic
between each switch is routed by the router. The reasons for the Distribution Layer 3
switch and examples of a larger network using both the campus-wide and local VLAN
models will be discussed later.
A VLAN can be thought of as a broadcast domain that exists within a defined set of
switches. Ports on a switch can be grouped into VLANs in order to limit unicast,
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