An implicit deny any statement is at the end of every standard ACL. If the defined criteria has not been met, the router proceeds to the next ACE. If met, the router takes the action defined in the ACE (allows the packet through or discards it). When a packet comes into a router that has an ACL configured on the interface, the router compares the condition of each ACE to determine if the defined criteria has been met.
A packet that does not match the conditions of any ACE will be forwarded by default.A packet that has been denied by one ACE can be permitted by a subsequent ACE.A packet can either be rejected or forwarded as directed by the ACE that is matched.An implicit deny any rejects any packet that does not match any ACE.Which three statements describe ACL processing of packets? (Choose three.).The structure, filtering methods, and limitations (on an interface, only one inbound and one outbound ACL can be configured) are the same for both types of ACLs. Thus processing inbound is more efficient from the router perspective. With an outbound ACL, packets are first routed to the outbound interface, then they are processed. With an inbound ACL, incoming packets are processed before they are routed. On a network interface, more than one inbound ACL can be configured but only one outbound ACL can be configured.Inbound ACLs are processed before the packets are routed while outbound ACLs are processed after the routing is completed.Inbound ACLs can be used in both routers and switches but outbound ACLs can be used only on routers.In contrast to outbound ALCs, inbound ACLs can be used to filter packets with multiple criteria.Which statement describes a difference between the operation of inbound and outbound ACLs?.An extended ACL can use multiple criteria to filter traffic, such as source IP address, destination IP address, type of traffic, and type of message. The only filter that can be applied with a standard ACL is the source IP address. Which address is required in the command syntax of a standard ACL?.The outbound ACL will be applied on the single outbound interface. when an interface is filtered by an outbound ACL and the network attached to the interface is the source network being filtered within the ACLĪn outbound ACL should be utilized when the same ACL filtering rules will be applied to packets coming from more than one inbound interface before exiting a single outbound interface.
when an outbound ACL is closer to the source of the traffic flow.when the ACL is applied to an outbound interface to filter packets coming from multiple inbound interfaces before the packets exit the interface.