99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項選擇題

A standard installation for wireless will use which of the following antenna types?（）

A.Sector
B.Patch
C.Yagi
D.Omni-Directional

你可能感興趣的試題

單項選擇題

Which of the following protocols requests membership to a multicast group?（）

A.IGMP
B.SNMP
C.SMTP
D.ICMP

單項選擇題

A user receives an email slating that their account was compromised and there is a need to verify
account credentials by submitting the correct information on a website.
Which of the following security threats is occurring?（）

A. Phishing
B. Smurf attack
C. Denial of service
D. Man-in-the-middle