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【多选题】
按计算机已有的认证功能及其认证的对象来分,电子认证有以下几种()A.
站点认证
B.
签名认证
C.
身份认证
D.
电讯源的认证
E.
数据电文认证
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皮皮学刷刷变学霸
举一反三
【多选题】新民主主义社会时期，社会主义因素与资本主义因素之间的斗争主要表现为( )。
A.
限制与反限制的斗争
B.
改造与反改造的斗争
C.
繁荣经济与落后生产方式的斗争
D.
敌我矛盾斗争
【多选题】which two statements about link-state routing protocols are true?(choose two)
A.
Each router determines its own path to a destination
B.
Link-state routing protocols use split horizon to avoid routing loops
C.
Each router shares a database of known routes
D.
Each router is aware only of its neighbor routers
E.
Each router maintains its own unique routing database
【单选题】What do we learn about the medical community?
A.
They now have a strong interest in research on aging.
B.
They differ from the academic circles in their view on aging.
C.
They can contribute to people's health only to a limited extent.
D.
They have ways to intervene in people's aging process.
【单选题】What did the man want to do?
A.
To buy a bike.
B.
To borrow a bike.
C.
To sell a bike.
【多选题】Which of the following protocols are examples of TCP/IP transport layer protocols? (Choose two answers)________
A.
Ethernet
B.
HTTP
C.
IP
D.
UDP
E.
SMTP
F.
TCP
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