A、take over
B、put off
C、head for
D、look upon
A、take over
B、put off
C、head for
D、look upon
Networks can be interconnected by different devices. In the physical layer, networks can be connected by(1)or hubs, which just move the bits from one network to an identical network. One layer up we fine bridges and switches, which operate at data link layer. They can accept(2),examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have(3)network layer, the router may be able to translate between the packer formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message(4). As an example, gateways between Intemet E-mail and X.400 E-mail must(5)the E-mail message and change various header fields.
In academic writing, introduction leads the reader from a general subject area to a particular field of research by following certain stages. Consider the inverted triangle pattern of an introduction, reorder the following stages. There is one stage unnecessary and you should cross it out in the ordering. Then decide which stages embody contextualization. ❶ Discussing previous research on the topic in the same context and identifying knowledge gaps ❷ Presenting the research topic in a particular context ❸ Introducing the research topic (General) ❹ Presenting a comprehensive review and synthesis of relevant research literature ❺ Explaining exactly what the paper will address, why, and how (Specific) Order the items in the following form: 1-3-4...
A、Classification
B、Analogy
C、Comparison
D、Exemplification
A、Classification
B、Exemplification
C、Comparison
D、Analogy
A、Classification
B、Exemplification
C、Comparison
D、Analogy
A、Classification
B、Exemplification
C、Comparison
D、Analogy
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