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【判断题】
一种将串联和并联有机结合起来的结构,即为混联结构。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】“OTC”标志有（）和（）两种？
A.
椭圆形红底白字和椭圆形绿底白字
B.
正方形红底白字和正方形绿底白字
C.
椭圆形黑底白字和椭圆形蓝底白字
D.
无底黑字和无底蓝字
【单选题】Which is not a reason that Internet Service Providers prefer to use PPP over Ethernet (PPoE)?（）
A.
access control and billing can be done on a per-user, rather than a per-site basis
B.
supports Link Fragmentation and Interleaving
C.
provides the ability to connect a network of hosts over a simple bridging access device
D.
provides a consistent means of authenticating users (RADIUS for example)
【简答题】请问图书《焊条电弧焊工艺与操作技巧》中关于焊条的分类内容,焊条可以分为多少类?第3类是?(建议使用超星读书)
【简答题】The
Internet is a wide area network, or WAN, which is different from a LAN. In contrast to the
term Internet, local area networks are often
called Intranets, though sometimes this term refers to a bun...
【单选题】Ethernet is a means of implementing which of the following network topologies?
A.
Star
B.
WiFi
C.
Bus
【多选题】Which three of these statements about PPPoP are true？（）
A.
You must install PPPoP client software on all hosts that connects to the Ethernet segment this means that the access provider must maintain a CPE
B.
PPPoP can provide a host with access to a destination over Ethernet. You can have only one PPPoPsession per PVC
C.
PPPoP implementation is susceptible to broadcast storms and possible denial-of-service attacks
D.
You cannot use PPPoP with Cisco Service Selection Gateway
E.
Per-session accounting is possible， which allows the service provider to charge the subscribe based onsession time for various services offered. The service provider can also require a minimum access change
【简答题】比萨城的标志是位于罗马式大教堂后方右侧的_ 。
【多选题】Which three of these statements about PPPoE are true？（）
A.
PPPoE can provide a host with access to a destination over Ethernet. You can have only one PPPoE session per PVC
B.
You must install PPPoE client software on all hosts that connect to the Ethernet segment. This means that the access provider must maintain a CPE
C.
You cannot use PPPoE with Cisco Service Selection Gateway
D.
PPPoE implementation is susceptible to broadcast storms and possible denial-of-service attacks
E.
Per-session accounting is possible， which allows the service provider to charge the subscriber based on session time for various services offered. The service provider can also require a minimum access charge
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