Field Service Technician Question:

☛ What is the difference between layer 2 and layer 3 in the OSI model?
☛ What is the difference between a hub, switch, and router?
☛ What is a VLAN?
☛ What is the difference between TCP and UDP?
☛ How do you distinguish a DNS problem from a network problem?
☛ What are a runt, Giant, and collision?
☛ What is a broadcast storm?
☛ What is the purpose of VRRP?
☛ What is a VPN?
☛ What is a default route?
☛ How do you set a default route on an IOS Cisco router?
☛ What is a metric?
☛ What is a MAC address?
☛ What is ARP/RARP?
☛ Describe a TCP connection sequence.
☛ What is MTU?
☛ What other TCP setting can you modify besides MTU to shorten packets?