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Koceilalounici
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Tue Nov 15, 2016 12:26 pm

Questions about networking (router and firewalls)

Tue Nov 15, 2016 12:40 pm

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

Natashawilliams
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Tue Mar 01, 2016 2:17 am

Re: Questions about networking (router and firewalls)

Thu Dec 15, 2016 5:43 am

I am also preparing for exam these are quite simple but tricky questions

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