Which of the following is the recommended maintenance for a laser printer? ()
A、Clean all fan filters; wipe down the paper path and re-adjust the corona wire.
B、Clean all pickup rollers; re-adjust the corona wire and replace the fuser assembly.
C、Clean all pickup rollers; replace the fuser assembly and clean all fan filters.
D、Clean all pickup rollers; wipe down the paper path and clean all fan filters.
When configuring the messaging system, which of the following are parameters of the e-mail transport? ()
ALocation
BProtocol
CMode
DWeb Address
EHost
变换编码是一种压缩率很高的编码方式,在以下的变换编码中,(1)是最佳正交变换,(2)是使用最多的、次最优的正交变换,在JPEG中使用的变换编码为(3),在JPEG2000中使用的又是(4)。空白(3)处应选择()
A、傅里叶变换
B、DCT变换
C、K-L变换
D、小波变换
在YUV和YIQ颜色空间中,Y表示的是(1)信号,UV表示的是(2)信号,YUV颜色空间主要应用于(3)。空白(3)处应选择()
A、模拟PAL彩色电视
B、模拟SECAM彩色电视
C、模拟NTSC彩色电视
D、模拟PAL和SECAM彩色电视
Which of the following should be configured on a wireless router to enhance security? (Select TWO).()
ADisable DHCP
BChange wireless channel
CDisable SSID broadcasting
DChange the default username and password
EUse a static IP address
WebSphere Commerce has been successfully installed and tested. WebSphere Commerce Analyzer has been installed and the extraction programs have run with no errors but there is no data in any reports when viewed from the WebSphere Commerce Accelerator. What could be the cause of this problem?()
A、The WebSphere Commerce application server was not started
B、The web server was not started
C、SSL has not been configured on the web server
D、The appropriate listeners were not enabled in Configuration Manager
E、The database server was not started