题目
第1题
B.Secondary?data?are?collected?through?interviews,?surveys;?primary?data?are?derived?from?books,?newspapers,?Internet,...
C.Primary?data?has?fewer?resource?requirements;?secondary?data?has?more?resource?requirements.
D.Primary?data?are?fresher?and?more?updated;?secondary?data?tends?to?be?of?higher?quality.
E.Secondary?data?are?less?suitable?to?match?our?need;?primary?data?are?better?matching?our?nee
D.
第2题
A.Gathering secondary data is costly.
B.Collecting secondary data is time consuming.
C.Few sources exist for secondary dA
D.It is not accurate enough.
第3题
A.switch-1 will drop the data because it dose not have an entry for that MAC address
B.switch-1 will flood the data out all of its port from which the data originated
C.switch-1 will forward the data to its default gateway
D.tch-1 will send an ARP request out all its ports except the port from which the data originated
为了保护您的账号安全,请在“赏学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!