搜题请搜索小程序“爱下问搜题”
问题 单项选择题

医学影像信息系统的（）是指将接入层网络设备汇集起来，形成全网互联的网络设备的集合，如（服务器、路由器、防火墙等）。

A.网络用户层

B.接入层

C.核心层

D.资源提供层

答案

参考答案：C

解答题
能简算的要简算．
（1）4.82×12.5×8
（2）18×
5
7
-5×
4
7

（3）
1997
1998
×998
（4）（8.3×35.7+35.7×1.7）÷3.57．
查看答案
单项选择题

Certificates are （） documents attesting to the （） of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to （） someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a Certificate also contains an （） date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital （） of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509.

As commonly used, a Certificate also contains an （） date, the name of the CA that issued the Certificate, a serial number, and perhaps other information.

A．communication

B．computation

C．expectation

D．expiration
查看答案