单选题A network administrator needs to add an additional connection to a room. The administrator adds a new Ethernet switch and must connect it to an existing switch. Which cable type should be used to connect the two switches?（）A CAT3 cableB Serial cableC C
题目
单选题
A network administrator needs to add an additional connection to a room. The administrator adds a new Ethernet switch and must connect it to an existing switch. Which cable type should be used to connect the two switches?（）
A
CAT3 cable
B
Serial cable
C
Crossover cable
D
Rollover cable