單項選擇題Which statement is true when ICMP echo and echo-reply are disabled on edge devices?()

A.Pings are allowed only to specific devices.
B.CDP information is not exchanged.
C.Port scans can no longer be run.
D.Some network diagnostic data is lost.
E.Wireless devices need to be physically connected to the edge device.
F.OSPF routing needs the command ip ospf network non-broadcast enabled.


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A.version
B.experimental
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4.多項選擇題

Refer to the exhibit.

Which three statements describe the steps that are required to configure an IPsec site-to-site VPN using a GRE tunnel?()

A.The command access-list 110 permit gre must be configured to specify which traffic will be encrypted.
B.The command access-list 110 permit ip must be configured to specify which hosts can use the tunnel.
C.The tunnel destination 172.17.63.18 command must be configured on the Tunnel0 interface.
D.The tunnel mode gre command must be configured on the Tunnel0 interface.
E.The tunnel source Ethernet1 command must be configured on the Tunnel0 interface.
F.The tunnel source Tunnel0 command must be configured on the Tunnel0 interface.

5.多項選擇題What are three configurable parameters when editing signatures in Security Device Manager (SDM)?()

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