I'm preparing to Networking exams, And i'm trying to solve the exams of last year, need some help
1-What data structure is naturally handled by a router that does filtering?
-the frame
-the packet
-the connection
-the set of connections
2-What is the point of giving a router that makes filtering the ability to interpret The level 4 (TCP very often) header?
-this simplifies the filtering rules
- you can save the interpretation of the level 3 header
-it is for the router to feel smarter
-this allows, among other things, to verify the progress of the exchange of data
3-When programming a router to interpret the connections, for example Using a complex filter, what resource does it need the most?
-RAM
-of electrical energy
- of computing capacity
-of mass memory
4-A simple filtering rule applied in a router:
-applies to all packets processed by this router
- applies only to packets that are routed
-only concerns packets that pass through a particular interface
-concerns only packets that transit through a particular interface, and Which flow in a certain direction
5-In the definition of an ACL:
-you can find only one filtering rule
- one can find several rules and the order in which they appear does not matter
-you can find several rules, the router uses them from the least restrictive to the most restrictive
-you can find several rules, the router uses them in the order in which they were Inputs when configuring the router
