语音业务一般采用()编码方式,数据业务一般采用()编码方式。
ZD6型电动转辙机动作杆完成一次动作,锁闭齿轮转过的角度是多少?
What are two methods of mitigating MAC address flooding attacks?()
A. Place unused ports in a common VLA
B. Implement private VLANs.
C. Implement DHCP snooping.
D. Implement port security.
E. Implement VLAN access maps.
受众的基本权利包括()
A. 传播权
B. 选择权
C. 知晓权
D. 享受权
E. 传媒接近权