Session 4 - DNS & DHCP

Question 1

What are the two types of computer network names?

Answer 1

NetBIOS names & Hostnames

Question 2

How many characters are allowed for computer hostnames?

Answer 2

255 characters are allowed, however, they should be kept to 15

Question 3

How many characters are allowed for NetBIOS names?

Answer 3

15 characters

Question 4

What are the three name resolution methods?

Answer 4

1. DNS Server
2. Host File
3. Host Cache

Question 5

What does DNS stand for and what is it?

Answer 5

Domain Name System = a service that resolves FQDNs to IP addresses and vice versa.

Question 6

What does FQDN stand for?

Answer 6

Fully Qualified Domain Names

Question 7

What is a Top-Level Domain (TLD)?

Answer 7

TLDs are also sometimes known as a first-level domain, is the last part of a domain name. e.g = .com, .edu, .gov, .au

Question 8

What is a Second-Level Domain?

Answer 8

Additional domains or second level domains are registered to an individual or organisation

Question 9

What is a DNS Zone?

Answer 9

Any distinct contiguous portion of the domain name space in the DNS

Question 10

What is the Forward Lookup Zone?

Answer 10

A DNS zone containing records used to resolve FQDNs to IP addresses

Question 11

What is a Reverse Lookup Zone?

Answer 11

A DNS zone containing records used to resolve IP address to FQDNs

Question 12

What is a Primary (Master) Zone?

Answer 12

A standard read-write zone that contains original authoritative DNS records

Question 13

What is a Secondary (Slave) Zone?

Answer 13

A standard read-only zone that contains a copy of the records contained in a primary zone and used for fault tolerance and load balancing

Question 14

What are the three different IP address allocation methods?

Answer 14

1. Dynamic allocation
2. Automatic allocation
3. Manual allocation