Networking第 36 / 100 题
Which device operates primarily at Layer 2 and forwards frames based on MAC addresses?
a.Hub
b.Modem
c.Router
d.Switch
解析
A switch learns MAC addresses and forwards frames only to the correct port at Layer 2. A hub blindly repeats to all ports, a router works at Layer 3, and a modem modulates signals for the ISP link.
免费刷完整 100 道题库 — 无需注册。
同考点相关题目
- Which protocol provides secure encrypted command-line access to a remote device?
- What is the primary function of a router in a network?
- Which cable type is required for 10 Gigabit Ethernet over reasonable copper distances?
- What does NAT allow a home network to do?
- Which protocol and port combination is used to send email between mail servers?
- A subnet mask of 255.255.255.0 corresponds to which CIDR notation?