BUSINESS DATA COMMUNICATIONS AND
IT INFRASTRUCTURES 2ND EDITION
AGRAWAL TEST BANK EXAMINATION TEST
2026 COMPLETE QUESTIONS AND
ANSWERS
⩥ A subnet mask is a 32-bit number that masks an IP address and
divides the IP address into network address and host address. Answer:
What is a subnet mask?
⩥ Class A
10.0.0.0 - 10.255.255.255 Answer: What is the address range for Class A
IPv4 address?
⩥ Class A
255.0.0.0 Answer: What is the default subnet mask of a Class A IPv4
address?
⩥ Class B
172.16.0.0 - 172.32.255.255 Answer: What is the address range for
Class B IPv4 address?
⩥ Class B
,25.255.0.0 Answer: What is the default subnet mask of a Class B IPv4
address?
⩥ Class C
192.168.0.0 - 192.168.255.255 Answer: What is the address range for
Class C IPv4 address?
⩥ Class C
255.255.255.0 Answer: What is the default subnet mask of a Class C
IPv4 address?
⩥ 32 bits or 4 bytes Answer: What is the size of an IPv4 address?
⩥ 1) Network portion: the unique number assigned to your network that
also identifies the class assigned.
2) Host portion: uniquely identifies this machine on your network.
Answer: What are the two parts of an IPv4 address?
⩥ 128 bits or 16 bytes Answer: What is the size of an IPv6 address?
⩥ * Hexadecimal
,* 8 sections - 4 HEX characters per section Answer: How is an IPv6
address written?
⩥ 1) any consecutive series of zeroes can be replaced with " :: "
2) " :: " can only be used once
3) all leading zeroes can be dropped Answer: What are the shorthand
rules for writing an IPv6 address? (be able to apply the rules)
⩥ Networks that use a few standard components throughout the network
are cheaper in the long run than networks that use a variety of different
components on different parts of the network. Answer: What is the
building block approach to network design?
⩥ 1) Needs analysis - understand why the network is being built and
what users and applications it will support.
2) Technology design - examines the available technologies and assesses
which options will meet users' needs.
3) Cost assessment - relative costs of the technologies are considered.
, Process then cycles back to the needs analysis which is refined using the
technology and cost information to produce a new assessment of users'
needs. Answer: What are the steps of the building block approach to
network design?
⩥ 1) Needs analysis - understand why the network is being built and
what users and applications it will support.
2) Technology design - examines the available technologies and assesses
which options will meet users' needs.
3) Cost assessment - relative costs of the technologies are considered.
Process then cycles back to the needs analysis which is refined using the
technology and cost information to produce a new assessment of users'
needs. Answer: What happens at each step of the building block
approach to network design?
⩥ 1) Needs analysis outcome: logical design
2) Technology design outcome: physical design
3) Cost assessment: what is this going to cost me? Answer: What is the
outcome of each step of the building block approach to network design?
IT INFRASTRUCTURES 2ND EDITION
AGRAWAL TEST BANK EXAMINATION TEST
2026 COMPLETE QUESTIONS AND
ANSWERS
⩥ A subnet mask is a 32-bit number that masks an IP address and
divides the IP address into network address and host address. Answer:
What is a subnet mask?
⩥ Class A
10.0.0.0 - 10.255.255.255 Answer: What is the address range for Class A
IPv4 address?
⩥ Class A
255.0.0.0 Answer: What is the default subnet mask of a Class A IPv4
address?
⩥ Class B
172.16.0.0 - 172.32.255.255 Answer: What is the address range for
Class B IPv4 address?
⩥ Class B
,25.255.0.0 Answer: What is the default subnet mask of a Class B IPv4
address?
⩥ Class C
192.168.0.0 - 192.168.255.255 Answer: What is the address range for
Class C IPv4 address?
⩥ Class C
255.255.255.0 Answer: What is the default subnet mask of a Class C
IPv4 address?
⩥ 32 bits or 4 bytes Answer: What is the size of an IPv4 address?
⩥ 1) Network portion: the unique number assigned to your network that
also identifies the class assigned.
2) Host portion: uniquely identifies this machine on your network.
Answer: What are the two parts of an IPv4 address?
⩥ 128 bits or 16 bytes Answer: What is the size of an IPv6 address?
⩥ * Hexadecimal
,* 8 sections - 4 HEX characters per section Answer: How is an IPv6
address written?
⩥ 1) any consecutive series of zeroes can be replaced with " :: "
2) " :: " can only be used once
3) all leading zeroes can be dropped Answer: What are the shorthand
rules for writing an IPv6 address? (be able to apply the rules)
⩥ Networks that use a few standard components throughout the network
are cheaper in the long run than networks that use a variety of different
components on different parts of the network. Answer: What is the
building block approach to network design?
⩥ 1) Needs analysis - understand why the network is being built and
what users and applications it will support.
2) Technology design - examines the available technologies and assesses
which options will meet users' needs.
3) Cost assessment - relative costs of the technologies are considered.
, Process then cycles back to the needs analysis which is refined using the
technology and cost information to produce a new assessment of users'
needs. Answer: What are the steps of the building block approach to
network design?
⩥ 1) Needs analysis - understand why the network is being built and
what users and applications it will support.
2) Technology design - examines the available technologies and assesses
which options will meet users' needs.
3) Cost assessment - relative costs of the technologies are considered.
Process then cycles back to the needs analysis which is refined using the
technology and cost information to produce a new assessment of users'
needs. Answer: What happens at each step of the building block
approach to network design?
⩥ 1) Needs analysis outcome: logical design
2) Technology design outcome: physical design
3) Cost assessment: what is this going to cost me? Answer: What is the
outcome of each step of the building block approach to network design?
