● The prototyping method is a dynamic design processes， which requires people who use prototyping method to have the following capability of __(71)__

(71)A. proficient program expertise

B.immediately acquire requirement

C.coordinate&organize eloquently

D. handle tools smartly

● TCP (Transmission Control Protocol) was specifically designed to provide a reliable end-to-end byte stream over a(n)__(72)__.

(72)A. IP address

B. reliable network

C.socket

D. unreliable internetwork

● A 10BaseT Ethernet LAN has__(73)__

(73)A. a star topology

B. a ring topology

C. a bus topology

D. a linear topology

● Maintenance activities do not include __(74)__.

(74)A. making enhancements to software products

B.developing a new software product

C. correcting problems

D.adapting products to new environme

● When a bridge transmits an Ethernet frame， the Ethernet frame has__(75)__.

(75)A.the broadcast address for the its source address

B.the bridge’s LAN address for its destination address

C.the bridge’s LAN address for its source address

D.none of the above