functions with two layers of protocols. It can connect networks of different speeds and can be adapted to an environment as it expands.

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

[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]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)

[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]The basic functions of a bill of lading is (are)（）.A .a receipt for the goods which evidences the taking-over or loading by the carrierB .an evidence of contract of carriage between the carrier and the shipper.C .a document of title to goods.D .All o