The Internet enables us to（）the world without leaving home.

enables users to search,access,and download information from Internet（）。

A.E-Mail

B.OA

C.WWW

D.AI

A．it helps her to know a lot of people with the same disease

B．it enables her to communicate with others and opens her horizons

C．it enables her to master the skills to create her own Web sites

D．it helps her to become a professional webmaster

way.including automation,transportation, health-care and disaster management. ioT enables an object to listen, hear, see and communicate at the same time, loT thus transforms the devices from being smart by incorporating its pervasive and ubiquitous computing, communication technologies, embedded devices and many other applications to influence and revolutionize human life. Looking into the future, the Internet will no Jonger be considered a network of computers, Instead it will consist billions of smart objects along with embedded devices, As a result of this, the application of internet of Things (IoT) will exponentially rise both in scope and size, providing new opportunities as well as challenges, A number of countries have developed long term national strategies for the implementation of loT For instance, broadband access in Japan is facilitating the communication between people, things and things, and people and things.

97、IoT enables an object()。

A.to listen

B.to see

C.to communicate

D.smart

98、Looking into the future， the Internet ()。

A.will still be considered a network of computers

B.wil no longer be considered a network of computers

C.will be considered a network of things

D.will no longer be considered a network of things

99、The application of Internet of Things (IoT) will exponentially rise(),providing new opportunities as well as challenges.

A.in scope

B.in size

C.both in scope and size

D.in deep

100、This paragraph mainly explains()。

A.the Internet of Things

B.the Internet

C.the smart object

D.the communication between people and things

A、Electronic commerce is the paperless exchange of business iformation using electronic data interchange (EDI),e-mail, electronic bulletin boards, fax transmissions, and electronic funds transter.

B、The concept of e commerce is all about using the Internet to do business better and faster.

C、E-commerce is the buying and sling of goods and services on the Internet, especally the Worid Wide Web.

D、E-commerce is a type of business model, or segment of a larger business model, that enables a frmor individual to conduct business over an leltronic network, tpicaly the itenet It only operates in one market segment、business to business.

The Simple Network Management Protocol(SNMP)is an(66)protocol that facilitates the exchange of management information between(67). It is part of the Transmission Control Protocol/Internet Protocol(TCP/IP)protocol suite. SNMP enables network(68)to manage network performance, find and sole network problems, and plan for(69)An SNMP -managed network consists of three key components: managed devices ,(70),and network -management systems .

A．Physical Layer

B．Link Layer

C．Network Layer

D．Transport Layer

The Simple Network Management Protocol (SNMP)is an(71)protocol that facilitates the exchange of management information between(72). It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite. SNMP enables network(73)to manage network performance, find and sole network problems, and plan for(74). An SNMP-man-aged network consists of three key components: managed devices,(75), and network-management systems.

A．Physical Layer

B．Link Layer

C．Network Layer

D．Transport Layer

sing. The shortage of addresses is becoming a serious problem.A quick solution to this problem is called network address translation(NAT).NAT enables a user to have a large set of addresses（）and one address, or a smallset of addresses,externally. The traffic inside can use the large set; the traffic（）, the small set. To separate the addresses used inside the home or business and the ones used for the Internet, the Internet authorities have reserved three sets of addresses as（）addresses. Any organization can use an address out of this set without permission from the Internet authorities. Everyone knows that these reserved addresses are for private networks.They are（）inside the organization, but they are not unique globally. No router will（）a packet that has one of these addresses as the destination address.The site must have only one single connection to the global Internet through a router that runs the NAT software.A.absolutely

B.completely

C.internally

D.externally

A.local

B.outside

C.middle

D.around

A.private

B.common

C.public

D.external

A.unique

B.observable

C.particular

D.ordinary

A.reject

B.receive

C.deny

D.forward

请帮忙给出每个问题的正确答案和分析，谢谢！

A. There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode

B. IGMP is used to register individual hosts with a multicast group

C. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from

D. IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1

E. IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP

F. IGMP snooping ru ns on Layer 3 routers

根据下面的文字资料回答 71～75 题 The Simple Network Management Protocol(SNMP)is an （1 ）protocol that facilitates the exchange of management information between （2 ）．It is part of the Transmission Control ProtocoL/Internet Protocol(TCP/IP)protocol suite. SNMP enables network（3 ）to manage network performance，find and sole network problems，and plan for（4 ）．An SNMP managed network consists of three key components：managed devices，（5 ），and networkmanagement systems．

第6题：文中（1 ）处正确的答案是（）。

A．Physical Layer

B．Link Layer

C．Network Layer

D．Transport Layer

the individual student working alone. The global reach of the Internet makes it possible to unite geographically scattered students in a virtual classroom. Methods such as multimedia, video-conferencing and the Internet will increasingly allow students both to proceed at their own pace, and to interact with one another and their teachers.

Even without taking the technology to its limits, the idea of education as a lifelong process is catching on throughout the industrialized world. Already, working adults who pursue their studies part-time make up roughly half of students taking college courses in the United States.

However, there is debate in scholar circles about how far new technology should be used for teaching academic subjects in which personal contacts between teacher and student are still vital. Britain's Open University, for example, a world leader in distance education, has embraced information technology cautiously, believing it to be no substitute for books and the exchange of ideas at live tutorials and summer schools.

But the Open University is also moving with the tide. It has set up a "knowledge media institute" to explore ways of adopting information technology. Some teachers are concerned about this trend, arguing that the heavy investment that students are expected to make in computer and communications equipment contradicts the concept of "open" cost, of course, is and important factor in many developing countries, where few people have computers or even phones. Rather than uniting the world, the new technologies could lead to societies of information haves and have-nots.

Distance learning is different from the traditional correspondence course in that______.

A．it requires the individual student to work alone

B．it enables all the students to work at the same pace

C．it allows students to discuss with one another and their teachers

D．it enables geographically scattered students to study in the same physical classroom