Refer to the exhibit.

The inside and outside interfaces in the NAT configuration of this device have been correctly identified. What is the effect of this configuration?

• A.dynamic NAT
• B.NAT64
• C.PAT
• D.static NAT

Comment: *

Name: *

Email: *

Verification: *

Drag and drop the QoS mechanisms from the left onto their descriptions on the right

Correct Answer:

Comment: *

Name: *

Email: *

Verification: *

Drag and drop the characteristics from the left onto the correct infrastructure deployment types on the right.

Correct Answer:

Explanation

Comment: *

Name: *

Email: *

Verification: *

Refer to the exhibit.

An engineer is installing a new pair of routers in a redundant configuration. Which protocol ensures that traffic is not disrupted in the event of a hardware failure?

• A.HSRPv1
• B.GLBP
• C.VRRP
• D.HSRPv2

Comment: *

Name: *

Email: *

Verification: *

Drag and drop the Qos mechanisms from the left to the correct descriptions on the right

Correct Answer:

Explanation
+ bandwidth management technique which delays datagrams: shaping+ mechanism to create a scheduler for packets prior to forwarding: policy map+ portion of the IP header used to classify packets: DSCP+ mechanism to apply a QoS policy to an interface: service policy+ tool to enforce rate-limiting on ingress/egress: policing+ portion of the 802.1Q header used to classify packets: CoS To attach a policy map to an input interface, a virtual circuit (VC), an output interface, or a VC that will be used as the service policy for the interface or VC, use the service-policy command in the appropriate configuration mode.
Class of Service (CoS) is a 3 bit field within an Ethernet frame header when we use 802.1q which supports virtual LANs on an Ethernet network. This field specifies a priority value which is between 0 and 63 inclusive which can be used in the Quality of Service (QoS) to differentiate traffic.
The Differentiated Services Code Point (DSCP) is a 6-bit field in the IP header for the classification of packets. Differentiated Services is a technique which is used to classify and manage network traffic and it helps to provide QoS for modern Internet networks. It can provide services to all kinds of networks.
Traffic policing is also known as rate limiting as it propagates bursts. When the traffic rate reaches the configured maximum rate (or committed information rate), excess traffic is dropped (or remarked). The result is an output rate that appears as a saw-tooth with crests and troughs.
Traffic shaping retains excess packets in a queue and then schedules the excess for later transmission over increments of time -> It causes delay.

Comment: *

Name: *

Email: *

Verification: *