A.Internet boundaries

B.Office network

C.Business service area

D.Core exchange area

A.Two DNS requests for the same user in the case of DNS transparent proxies The replaced address may be different.

B.The DNS proxy function replaces the source address header in the DNS request packet.

C.In the case of NGFW as the exit network and the DNS server of the enterprise intranet The DNS transparent proxy function can still be implemented normally.

D.After enabling the DNS transparent proxy function The DNS server address to replace is determined for the outgoing interface

A.FALSE

B.TRLE

A.When the interface is configured as an IPv6 address , DAD is used to detect whether the IPv6 address to be used is unique within the local link.

B.IPv6 duplicate address detection technology is similar to free ARP in IPv4 Used to detect duplicate IPv4 host addresses when the address is divided into IE or when the host is connected to the network.

C.The test address enables broadcast communication.

D.The node sends a Neighbor Request (NS) packet to the test address it will use If you receive a Neighbor Notification (NA) message from another site then proves that the address has already been used.

A.By default... Unicast packets are controlled by security policies

B.In the case of the province, multicast packets are not controlled by security policies

C.When the firewall is equipped with the undo firewall packet-filter basic-protocol enable command, unicast packets are not controlled by security policies

D.By default... Broadcast packets are not controlled by security policies