單項選擇題

You have been tasked with setting a trust boundary on the Company network.
 What is the basic  function of this trust boundary?()

A. Trust boundaries are points in the network where Layer 2 CoS markings are converted to Layer  3 DSCP or IP precedence markings.
B. Trust boundaries are a point in the network where QoS functionality begins and ends.
C. Trust boundaries determine whether certain types of traffic can pass.
D. Trust boundaries are a point in the network where decisions about CoS markings on incoming  packets are made.
E. None of the other alternatives apply


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2.多項選擇題

You need to determine where the trust boundaries will be in a new Company VOIP design. 
Which  two statements are true about these trust boundaries?()

A.Trust boundaries are configured in the core of the network to provide the most efficient  forwarding based upon QoS markings,
B.Setting trust boundaries at the edge of the network allows intermediate hop devices to  administer QoS policies without detailed packet identification.
C.Trust boundaries are used to determine which QoS mechanism will be applied to the traffic.  
D.At the trust boundaries, the untrusted traffic will be marked with a new QoS value appropriate  for the policy in place at the point where the traffic entered the campus network.  
E.Trust boundaries define the firewall rules for QoS admission into a network.

3.單項選擇題

Refer to the exhibit. Based upon the information that is given, 
how will voice traffic from the phone  and data traffic from the PC be handled by SW_1? ()

A.The switch port will perform marking for the ingress voice and data traffic by using the  defaultCoS value at the switch port.
B.The switch port will trust theCoS value of the ingress voice and data traffic that comes into the  switch port.
C.The switch port will trust theCoS value of the ingress voice traffic. Data traffic will be marked at  the switch port with the default CoS value.
D.The switch port will trust theCoS value of the ingress data traffic. Voice traffic will be marked at  the switch port with the default CoS value.

4.單項選擇題

The voice VLAN feature has been enabled on a new Company Catalyst switch port. 
What is the  effect of this? ()

A.The CoS is trusted for 802.1P or 802.1Q tagged traffic.
B.PortFast is disabled on the port.
C.Port Security is automatically enabled on a voice VLAN port.
D.Untagged traffic is sent according to the default CoS priority of the port.
E.None of the other alternatives apply

5.單項選擇題

Refer to the exhibit. 
Which statement is true about where trust boundaries should be established  in a network?()


A.Endpoints 2 and 3 are optimal places to establish a trust boundary. Endpoint 1 is an acceptable  place to establish a trust boundary.
B.Endpoint 2 is the optimal place to establish a trust boundary. Endpoints 1 and 3 are acceptable  places to establish a trust boundary.
C.Endpoint 2 is the only acceptable place to establish a trust boundary.  
D.Endpoint 1 is the only acceptable place to establish a trust boundary.
E.Endpoints 1 and 2 are optimal places to establish a trust boundary. Endpoint 3 is an acceptable  place to establish a trust boundary.
F.Endpoint 1 is the optimal place to establish a trust boundary. Endpoints 2 and 3 are acceptable  places to establish a trust boundary.

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