A．The hub
B．The bridge
C．The router
D．The proxy
[单选题]( )functions with two layers of protocols.It can connect networks of differ
[单选题] (74) functions with two layers of protocols．It can connect networks of different speeds and can be adapted to an environment as it expands．(74) A．The hubB．The bridgeC．The routerD．The proxy
[单选题]（） performs two basic functions-marketing and logistics.A . paper wrappingB . packagingC . warehouseD . transportation
[单选题]（）performs two basic functions-marketing and logistics.A . Paper wrappingB . PackagingC . WarehouseD . Transportation
[单选题]Communication protocols are (66) connection-oriented or connectionless， (67) whether the sender of a message needs to contact and maintain a dialog with the recipient or (68) send a message without any prior connect and with the hope that the recipie
[单选题]C．ommunication protocols are(66)connection-oriented or connectionless,(67)whether the sender of a message needs to contact and maintain a dialog with the recipient or(68)send a message without any, prior connect and with the hope that the recipient r
[单选题]What refers to the protocols used to determine who goes next on a multi-access channel?(74)A．MAC(medium access control)B．ARP(address resolution protocol)C．NAT(network address translation)D．CIDR(classless interdomain routing)
[试题] Routing protocols use different techniques for assigning（71）to individual networks．Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal（72）.Some routing
[单选题]Routing．protocols use different techniques for assigning(S1)to individual networks．Further，each routing protocol forms a metric aggregation in a different．way．Most routing protocolscan use muh．iple paths if the paths have an equal(S2)．Some routing pr
[单选题]A．dditives _____ protective layers on metal surfaces guarding them against corrosion.A．damageB．form.C．dissolveD．contaminate