Modulul 9 -Address Resolution Flashcards

1
Q

Ce două protocoale sunt utilizate pentru a determina adresa MAC a unei adrese IP a dispozitivului de destinație cunoscut (IPv4 și IPv6)?

A

ARP (address resolution protocol) = folosit pentru a determina adresa MAC a unui device destinatar cunoscut in IPV4.
ND (neighbour discover) = folosit pentru a determina adresa MAC a unui device destinatar cunoscut in IPV6.

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2
Q

Care este comanda pentru a arata adresa ARP pe routerele Cisco si calculatoarele Windows 10?

A

Cisco: show ip arp
Windows:a arp -a

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3
Q

Defineste ARP Poisoning

A

ARP este o brisa de securitate care permite hackerilor sa trimita adresa lor MAC catre device-ul care doreste defapt sa acceseze default gateway-ul (ARP spoofing).

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4
Q

In ce componenta a routerului este adresa ARP salvata?

A

Este salvata temporar in RAM. Pe windows 10 este salvata pentru 10-45 de secunde dupa care este stearsa informatia!

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5
Q

Ce informatie este salvata in tabelul ARP?

A

Rutele de la adresele IPv4 care duc spre adresa MAC

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6
Q

Care este rolul ARP-ului?

A

De a afla MAC-ul unui device cand se stie IP-ul

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7
Q

ARP si cele doua roluri ale ei:

A

Rezolvarea adreselor IPv4 la adresele MAC

Menținerea unui tabel de mapări de adrese IPv4 la MAC

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8
Q

Cum sunt ARP requesturile encapsulate?

A

Sunt encapsulate in ethernet frame, fara IPV4 header. Frameurile contin:

  1. Destination MAC address: broadcast adica FF-FF-FF-FF
  2. Source MAC address
  3. Type
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9
Q

Which two types of IPv6 messages are used in place of ARP for address resolution?

A

Neighbour solicitation & neighbour advertisement

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10
Q

What information does the loopback test provide?

A

The TCP/IP stack on the device is working correctly.

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11
Q

Why is NAT not needed in IPv6?​

A

Sunt deja destule adrese IP.

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12
Q

Ce informatie iti ofera un test de loopback?

A

Daca stack-ul tcp/ip functioneaza corect.

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13
Q

Doua functii primare pe care le indeplineste un router?

A

Path selection si packet forwarding

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