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NEW QUESTION: 1
Select the appropriate Enterprise Integration Pattern (EIP) that can be used to remove unimportant data items from messages and leave only the important ones.
A. Composed Msg. Processor
B. Content Filter
C. Dynamic Router
D. Message Filter
Answer: B
NEW QUESTION: 2
have a root port so which port will it choose? To answer this question we need to know about STP cost and port cost.
In general, "cost" is calculated based on bandwidth of the link. The higher the bandwidth on a link, the lower the
value of its cost. Below are the cost values you should memorize:
SwitchB will choose the interface with lower cost to the root bridge as the root port so we must calculate the cost on
interface Gi0/1 & Gi0/2 of SwitchB to the root bridge. This can be calculated from the "cost to the root bridge" of each
switch because a switch always advertises its cost to the root bridge in its BPDU. The receiving switch will add its local
port cost value to the cost in the BPDU.
One more thing to notice is that a root bridge always advertises the cost to the root bridge (itself) with an initial value of 0.
Now let's have a look at the topology again
SwitchC advertises its cost to the root bridge with a value of 0. Switch D adds 4 (the cost value of 1Gbps link) and
advertises this value (4) to SwitchB. SwitchB adds another 4 and learns that it can reach SwitchC via Gi0/1 port with a
total cost of 8. The same process happens for SwitchA and SwitchB learns that it can reach SwitchC via Gi0/2 with a
total cost of 23 -> Switch B chooses Gi0/1 as its root port ->.
Now our last task is to identify the port roles of the ports between SwitchA & SwitchB. It is rather easy as the MAC
address of SwitchA is lower than that of SwitchB so Fa0/2 of SwitchA will be designated port while Gi0/2 of SwitchB
will be alternative port.
Answer:
Explanation:
Below summaries all the port roles of these switches:
+ DP: Designated Port (forwarding state)
+ RP: Root Port (forwarding state)
+ AP: Alternative Port (blocking state)
NEW QUESTION: 3
A. Option C
B. Option B
C. Option A
D. Option D
Answer: D
Explanation:
Configuring Port Security
http://packetlife.net/blog/2010/may/3/port-security/
We can view the default port security configuration with show port-security:
http://www.ciscopress.com/articles/article.asp?p=1722561
Switchport Security Violations The second piece of switchport port-security that must be understood is a security violation including what it is what causes it and what the different violation modes that exist. A switchport violation occurs in one of two situations:
When the maximum number of secure MAC addresses has been reached (by default, the maximum number of secure MAC addresses per switchport is limited to 1)
An address learned or configured on one secure interface is seen on another secure interface in the same VLAN The action that the device takes when one of these violations occurs can be configured: Protect-This mode permits traffic from known MAC addresses to continue to be forwarded while dropping traffic from unknown MAC addresses when over the allowed MAC address limit. When configured with this mode, no notification action is taken when traffic is dropped. Restrict-This mode permits traffic from known MAC addresses to continue to be forwarded while dropping traffic from unknown MAC addresses when over the allowed MAC address limit. When configured with this mode, a syslog message is logged, a Simple Network Management Protocol (SNMP) trap is sent, and a violation counter is incremented when traffic is dropped. Shutdown-This mode is the default violation mode; when in this mode, the switch will automatically force the switchport into an error disabled (err-disable) state when a violation occurs. While in this state, the switchport forwards no traffic. The switchport can be brought out of this error disabled state by issuing the errdisable recovery cause CLI command or by disabling and re-enabling the switchport. Shutdown VLAN-This mode mimics the behavior of the shutdown mode but limits the error disabled state the specific violating VLAN.
NEW QUESTION: 4
When creating a subnet, one or more placeholder security lists are often associated with the subnet. Why?
A. Each network endpoint or instance in the subnet needs its own security list.
B. It is not possible to add or remove security lists after a subnet Is created.
C. Each operator needs its own security list.
D. Each protocol needs its own security list.
Answer: B