1. What is the Govnet？

　　[A]A reliable network infrastructure that can be built at an affordable price.

　　[B]A government computer network that may prove immune to penetration.

　　[C]A national security system to be developed by the government.

　　[D]A private national security system to be developed against outside invasion.

　　2. It is implied that some computer consultants consider Govnet to be almost impossible because .

　　[A]it will entail considerable cost

　　[B]there isn't a reliable network infrastructure yet

　　[C]it will be difficult for Govnet to fit into the Internet

　　[D]no telecommunications company can afford it

　　3. How will Govnet achieve its intended goal of enhancing the security of the government network？

　　[A]By stepping up its virus-killing software.

　　[B]By scanning for viruses and attacks constantly.

　　[C]By secluding itself from the Internet.

　　[D]By establishing an internal watchdog committee.

　　4. What Amit Yoran said amounts to denying .

　　[A]the feasibility of building a security program

　　[B]the efficiency of the present network in countering outside attacks

　　[C]the conceived security of Govnet

　　[D]the possibility of enhancing the security of the government network

　　5. The initiative for constructing an internal network stems from .

　　[A]the vulnerability of the present network to outside attacks

　　[B]the improvement in network security technology

　　[C]the desire to build a stronger national defense system

　　[D]the proposals submitted by telecommunications companies

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