IT Executive 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?