Network Segmentation

Question 1

What is an ACL?

Answer 1

Access Control List (L3)

Question 2

What rule is at the end of an ACL?

Answer 2

Implicit deny

Question 3

How do you denote a wildcard mask on a Cisco router vs Cisco ASA?

Answer 3

Router 0.0.0.255
ASA 255.255.255.0
Says last octet can be any IP

Question 4

What is a VLAN?

Answer 4

Virtual Local Area Network
same layer 2 broadcast domain
requires routing for VLAN intercommunication

Question 5

What is QoS?

Answer 5

Quality of Service

implements traffic shaping to prioritise specific traffic

Question 6

How are ACLs processed?

Answer 6

Top to bottom

If there is a packet match the rest of the ACL will not be considered at that instance

Question 7

What is NAC?

Answer 7

Network Admission Control

Question 8

What is PAT vs NAT?

Answer 8

NAT - one to one mapping

PAT - one to many mapping

Question 9

What is destination vs source NAT?

Answer 9

Source NAT - Map private to public address | outbound

Destination - Map public to private address | inbound