The PPP over Ethernet Discovery Stage determines which two parameters? ()(Choose two.)
Asession ID
Bauthentication server
CIP address of the client
DMAC address of the ERX router
The PPP over Ethernet Discovery Stage determines which two parameters? ()(Choose two.)
Asession ID
Bauthentication server
CIP address of the client
DMAC address of the ERX router
UPS的()可以通过测量UPS的输出功率与输入功率求得。
A、波形
B、频率
C、输出电压
D、效率
光(电)缆线路在()地区无需采取相应的防护措施。
A、鼠害
B、鸟害
C、蚁害
D、蛇害
子管数量根据管孔直径及工程需要确定。数根子管的总等效外径宜不大于管孔内径的()。
A、80%
B、85%
C、90%
D、95%
用计算机绘图时,栅格捕捉的作用是为了得到屏幕上()。
A、线段的端点
B、图形的特性
C、两点间的距离
D、准确的坐标点
A customer receives a CD-RW disk from a computer vendor. The customer tries to read the disk in a computer with a 4X CD-ROM drive and is unable to read any information. The customer tries the CD-RW disk on a 32X CD-ROM drive and it reads correctly. What is the cause of this problem?()
A、The 4X CD-ROM drive has dirty optics or laser and requires cleaning.
B、The 4X CD-ROM drive needs to be jumpered to support CD-RW disks.
C、The 4X CD-ROM drive does not support the multi-read specification.
D、The 4X CD-ROM is fine, but the CD-RW disk has a flaw in its format.