A record
NS record
CNAME record
MX record
第1题：
A. Active/passive cluster
B. Active/active cluster
C. Log shipping
D. DNS round robin
第2题：
Which of the following media types is the MOST durable in harsh environments?（）
第3题：
A. A record
B. NS record
C. CNAME record
D. MX record
第4题：
When load balancing traffic between two web servers， which of the following technologies provides the LOWEST cost solution？（）
第5题：
Which of the following BEST describes the function of a DNS server?（）
第6题：
Which of the following DNS record types provides the hostname to IP address mapping?（）
第7题：
Which of the following server types allows resolution of domain names to IP addresses？（）
第8题：
A. A
B. MX
C. PTR
D. AAAA
第9题：
On which of the following transmission media types can LC connectors be found?（）
第10题：
Which of the following cable types is the LEAST affected by EMI？（）