Sample Interview Questions for Network Engineers

 

Sample Interview Questions for Network Engineers

• What is the subnet mask 10.2.1.3/22?
• What is the administrative distance of EIGRP, eBGP, iBGP?
• What is your favorite routing Protocol?
• In EIGRP, what is a Stuck in Active route?
• In OSPF, what is a totaly stubby area?  What does Area Zero do?
• Which internal routing protocol would use if you needed to route between Cisco and non-Cisco equipment?
• Explain what a 3-way handshake is in TCP?
• What is a VLAN trunking protocol?
• What is the different between 802.1q and ISL?
• Explain what is an Ether-Channel?
• What do you need to do to setup a VTP domain?
• What is Spanning Tree used for?
• What is a root bridge and why do you need one?
• What is needed on a router interface to allow DHCP to function on a subnet?
• Describe what a stateful firewall is?
• What is HSRP?  Is this an open standard?
• In a PIX/ASA, what are security levels used for?
• What two things are needed in a PIX/ASA firewall to allow traffic to pass from a higher security level to a lower security level?
• In IPSec VPNs, what is diffie hellman?  What is it used for?
• In an IPSec tunnel, what is main mode?