多项选择题

When a DHCP server is configured, which two IP addresses should never be assignable to hosts? （）

A.network or subnetwork IP address
B.broadcast address on the network
C.IP address leased to the LAN
D.IP address used by the interfaces
E.manually assigned address to the clients
F.designated IP address to the DHCP server

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单项选择题

Refer to the exhibit.Explain how the routes in the table are being affected by the status change on interfaceEthernet0.（）

A.The router is poisoning the routes and multicasting the new path costs via interface Ethernet1
B.The router is receiving updates about unreachable networks from router that are connected to interface Ethernet1
C.The router is poisoning the routes and broadcasting the new path costs via interface Ethernet1
D.The router is requesting updates for these networks from routers that are connected to interface Etherne1

单项选择题

On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?（）

A.a router with subinterfaces configured on the physical interface that is connected to the switch
B.a router with an IP address on the physical interface connected to the switch
C.a switch with an access link that is configured between the switches
D.a switch with a trunk link that is configured between the switches

多项选择题

Which of the following are key characteristics of PPP？（）

A.can be used over analog circuits
B.maps Layer 2 to Layer 3 address
C.encapsulates several routed protocols
D.supports IP only
E.provides error correction