在路由器MSR-1上看到如下提示信息：[MSR-1]displayfirewall-statisticsallFirewallisenable，defaultfilteringmethodis’permit’.Interface：GigabitEthernet0/0In-boundPolicy：acl3000FragmentsmatchednormallyFrom2008-11-082：25：13to2008-11-082：25：460packets，0bytes，0%permitted，4packets，240bytes，37%denied，7packets，847bytes，63%permitteddefault，0packets，0bytes，0%denieddefault，Totally7packets，847bytes，63%permitted，Totally4packets，240bytes，37%denied.据此可以推测（）。

A.由上述信息中的37%denied可以看出已经有数据匹配ACL3000中的规则

B.有一部分数据包没有匹配ACL3000中的规则，而是匹配了默认的permit规则

C.ACL3000被应用在GigabitEthernet0/0的inbound方向

D.上述信息中的0%denieddefault意味着该ACL的默认匹配规则是deny

Rapid advances in computer and communication technologies have resulted in the (71) merger of these two fields. The lines have bluned among computing, switching, and digital transmission equipment, and the same digital techniques are being used for data, voice, and image transmission. Merging and evolving technologies, coupled with increasing demands for efficient and timely collection, processing, and (72) of information, are leading to the development of (73) that transmit and process all types of data. The ultimate goal of this evolution is something its proponents-some of the most powerful forces in the computing and telecommunications industries-call the (74) .The (74) will be a worldwide public telecommunications network that will deliver a wide variety of services. The (74) will be defined by the standardization of user interfaces, and will be implemented as a set of digital switches and paths supporting a broad range of traffic types and providing (75) processing services. Inpractice, there will be multiple networks, implemented within national boundaries, but from the user’s point of view there will be a single, uniformly accessible worldwide network.

A．accessible

B．special

C．data

D．value-added