To reduce their design complexity, most networks are organized as a stack of(72), each one built upon the one below it.A．blocksB．modulesC．piecesD．layers
题目
To reduce their design complexity, most networks are organized as a stack of(72), each one built upon the one below it.
A．blocks
B．modules
C．pieces
D．layers
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更多“To reduce their design complexity, most networks are organized as a stack of(72), each one ”相关问题
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第1题：
The stages within the development phase of the software life cycle are ( 71 ).
A.design, analysis, implementation, and testing
B.analysis, design, implementation, and testing
C.analysis, design, testing, and implementation
D.design, analysis, testing, and implementation
正确答案：C
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第2题：
（72）
A．computers
B．routers
C．switches
D．networks
正确答案：D
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第3题：
Without proper safeguards,every part of a network is vulnerable to a security breach or unauthorized activity from（71）,competitors,or even employees.Many of the organizations that manage their own（72）network security and use the Internet for more than just sending/receiving e-mails experience a network（73）—and more than half of these companies do not even know they were attacked.Smaller（74）are often complacent,having gained a false sense of security.They usually react to the last virus or the most recent defacing of their website.But they are trapped in a situation where they do not have the necessary time and（75）to spend on security.A.users
B.campuses
C.companies
D.networks答案：C解析：略 -
第4题：
Refer to the exhibit. Which two statements about the topologies shown are correct?()
A. Design 1 is a looped triangle design.
B. Design 2 is a looped triangle design.
C. Design 2 achieves quick convergence using RSTP.
D. Both designs supportstateful services at the aggregation layer.
E. Design 2 is the most widely deployed in enterprise data centers.
参考答案：A, D
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第5题：
Reading authentic writings is one of the best ways to __________our English vocabulary.A．spread
B．extend
C．organize
D．enrich答案：D解析：考查动词辨析。spread意为“传播，伸展”，extend意为“延伸；扩大；推广”，organize意为“组织，使有系统化”，enrich意为“使充实；使富足；使丰富”。句意为“阅读是丰富我们词汇量最好的方法之一”。 -
第6题：
Teams are required for most engineering projects. Although some small hardware or software products can be developed by individuals, the scale and complexity of modem systems is such, and the demand for short schedules so great, that it is no longer ___71___ for one person to do most engineering jobs. Systems development is a team ___72___, and the effectiveness of the team largely determines the ___73___ of the engineering.
Development teams often behave much like baseball or basketball teams. Even though they may have multiple specialties, all the members work toward ___74___. However, on systems maintenance and enhancement teams, the engineers often work relatively independently, much like wrestling and track teams.A team is ___75__ just a group of people who happen to work together. Teamwork takes practice and it involves special skills. Teams require common processes; they need agreed-upon goals; and they need effective guidance and leadership. The methods for guiding and leading such teams are well known,but they are not obvious.A.size
B.quality
C.scale
D.complexity答案：B解析：大多数软件工程项目都是需要由项目团队完成的，虽然小的简单的软硬件系统个人就能完成，但是对于大型复杂系统并且需要详细计划的项目由个人完成并不实际。系统开发是团队工作，团队工作的效率很大程度上决定了软件工程的质量。
开发团队的合作与篮球或棒球运动员之间的合作很相像，尽管每个人都有自己擅长的技术，但是大家是向着一个目标而努力的。项目团队不是一群碰巧工作在一起的人，团队工作需要一群人互相配合，齐心协力向着一个目标奋斗，并且这群人也需要一个好的领导来带领他们。