Refer to the exhibit,a network administrator cannot establish a telnet session with the indicated router.What is the cause of this failure?()
A level 5 password is not set
B. The vty password is missing
C. The console password is missing
D. An ACL is blocking Telnet acce
查看答案
长3m~6m木手板,厚度不应小于50mm。
A. 正确
B. 错误
机泵在运行中,由于介质、水以及其他物质可能窜入油箱内,影响泵的正常运行,因此要经常检查润滑剂的()
A. 规格
B. 牌号
C. 质量
D. 厂家
下列制图比例中,缩小的比例是()。
A. 2:1
B. 4:1
C. 5:1
D. 1:5