JA Net+ Ch8

Question 1

Packet InterNet Groper (ping)

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Answer 1

Uses an ICMP echo request and replies to test if a host IP stack is initialized and alive on the network.

Question 2

Tracert

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Answer 2

Same command as traceroute, but it’s a Windows command and will not work on other devices, like a Cisco router or Unix box.

Question 3

arp -a

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Answer 3

Displays IP-to-MAC-address mappings on a Windows PC.

Question 4

ipconfig /all

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Answer 4

Used only from DOS prompt. Shows you the PC network configurations.

Question 5

What are some things NAT is a useful tool for?

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Answer 5

Network migrations and mergers, server load sharing, and creating “virtual servers.”

Question 6

What are some situations when it’s best to have NAT on your side?

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Answer 6

You need to connect to the internet and your hosts don’t have globally unique IP addresses.

You change to a new ISP that requires you to renumber your network.

You need to merge two intranets with duplicate addresses.

Question 7

Static NAT (SNAT)

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Answer 7

This type of nat is designed to allow one-to-one mapping between local and global addresses.

Question 8

Dynamic NAT (DNAT)

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Answer 8

This version gives you the ability to map an unregistered IP address to a registered IP address from a pool of registered IP addresses.

Question 9

Inside Local, outside local.

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Answer 9

Name of the inside source address before translation.

Name of the destination host before translation.

Question 10

Inside global, outside global

Answer 10

Name of the inside host after translation

name of the outside destination host after translation.