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Computer Science The gateway then forwards the packets 3. Dynamic vs. Static IP addresses
towards the destination, possibly
(a) Compare and contrast dynamic
through multiple hops. For example, if
and static IP addresses.
a computer on 192.168.1.0/24 network
(b) List the advantages and
sends data to 203.0.113.0/24, it goes
FOR ONLINE READING ONLY
disadvantages of each.
through the default gateway.
4. Role of IP addresses in routing
Activity 3.6: (a) Examine how IP addresses are
used in routing to the default
Exploring IP addresses
gateway.
Aim: (b) Describe how the default
To understand the differences, gateway’s IP address facilitates
functions, and roles of various types network communication.
of IP addresses and related networking
concepts. Deliverables:
Written detailed report with summarized
Materials: findings including relevant examples
Internet access; Library resources and diagrams
(books, journals, articles); Computer
or laptop; and Diagramming tools
(Such as Microsoft Visio, Lucidchart) Concept of IPv4 subnetting
IPv4 Subnetting was introduced to address
Instructions issues that were emerging within the
Use Internet or library resources to Internet’s classful two-level addressing
complete the following tasks: hierarchy. These issues included the
1. Public vs. Private IP addresses growth of Internet routing tables and the
(a) Investigate the differences need for local administrators to request
between public and private IP additional network numbers before
addresses. installing a new network at their site.
(b) Provide examples of each type.
The concept of subnetting involves
2. Network Address Translation dividing the standard classful host
(NAT) and Port Address Translation number field into two parts: the subnet
(PAT) number and the host number on that
(a) Research how NAT and PAT subnet. The subnet structure is internal
work. to an organization’s private network and
(b) Include examples to illustrate is not visible outside of it. Regardless of
both concepts. the specific subnet a destination host is
158
for Advanced Secondary Schools
Computer Science Form 5.indd 158 23/07/2024 12:33
