IS 404 MIDTERM 2 EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026
What does subnetting do? - Answers Divides a single large network into smaller networks
A class A network (e.g. 15.0.0.0/8) must have 16,000,000 hosts on one network - Answers
If you take the 173.55.0.0/16 network and subnet it with a new subnet mask of /19, how many
subnets can you create? - Answers 8
If you want to create 25 subnets on your network, how many bits do you need to have for subnetting
- Answers 5
Subnet masks can only be /8, /16, or /24. - Answers False
With an IP address of 128.187.17.44 and a subnet mask of 255.255.240.0, what is the network
address? - Answers 128.187.16.0
With an IP address of 217.56.77.55/29, how many hosts can be on the network? - Answers 6
What is not a reason for creating subnets? - Answers to reduce the number of networks you need to
manage.
What is contained in most DHCP offers? - Answers - Subnet mask
- IP address
- Default Gateway
- DNS servers
A client will first attempt to renew a DHCP lease at what time? - Answers Halfway through the lease
time
A DHCP Discover message is best compared to what? - Answers Your computer screaming that it is
lost and needs help.
IP address configuration can be configured manually, but is more often best handled by DHCP. -
Answers True
The world is running out of IPv4 addresses - Answers True
the best comparison to explain the number of IPv6 addresses is which of the following? - Answers A.
As many LEGO bricks would fit in the white house.
B. As many computers as there are on earth.
C. As many water droplets to fill a swimming pool
CORRECT - D. More than all of the above combined
Which of the following is not a valid IPv6 address - Answers A. ::
B. ::1
C. 2bce::1234
CORRECT - D. 2fe3::44aa:7776::2dbe
What has slowed down the IPv4 exhaustion issue - Answers Private IP addresses
With IPv6, every device on the planet will be able to have a unique public IP Address. - Answers Yes
Once the destination network is identified, what information from the routing table does the
computer use to identify the router that will handle the packet? - Answers Gateway
What type of routing does your computer do? - Answers Default
What information does a router store in its routing table? - Answers Metric, Interface, Network
Address
What is cloud computing? - Answers On-demand delivery of IT resources and applications through the
internet with pay-as-you-go pricing.
What is another name for on-premises deployment? - Answers Private cloud deployment
How does the scale of cloud computing help you save costs? - Answers the aggregated cloud usage
from a large number of customers results in lower pay-as-you-go prices.
Which AWS service is the best choice for publishing messages to subscribers? - Answers Amazon
Simple Notification Service (SNS)
What are the contract length option for EC2 reserved instance? - Answers 1 year, 3 year
You have a workload that will run for a total of 6 months that can withstand interruptions. what
would be the most cost-efficient EC2 purchasing option? - Answers Spot instance
, Which process is an example of Elastic Load Balancing? - Answers Ensuring that no single Amazon EC2
instance has to carry the full workload on its own
The A in the CIA triad refers to what? - Answers Availability
What is the AWS term that refers to data centers in different geographical locations, e.g. Ohio, Paris,
or Sao Paulo? - Answers Regions
Which of the following do you need to consider when selecting a region? - Answers Distance from
your customers
Availability of services
Legal requirements
What is the purpose of running services in multiple availability zones? - Answers To ensure resilience
from natural and other disasters
What region are your AWS Educate instances using? - Answers Northern Virginia
Amazon CloudFront is an example of what? - Answers Content Delivery Network
What have we been using to create AWS resources in class so far? - Answers Infrastructure as Code
Which AWS service involves creating a direct fiber connection from your data center into AWS? -
Answers AWS Direct Connect
What service controls what is allowed onto a network or subnet? - Answers Network Access Control
List
What is the key difference between stateful and stateless network monitoring? - Answers Stateful
monitoring automatically allows return traffic
What is the name for Amazon's DNS service? - Answers Route 53
When an Ethernet device detects a collision, what does it do? - Answers Drops the frame
What is the purpose of the ARP Protocol? - Answers To determine the MAC address for an IP address
An ARP request is required for each frame to be sent across the network - Answers False
Which network topology involves a direct connection between each device on the network? -
Answers Mesh
A hub is a network device that operates at which layer of the TCP/IP model? - Answers Physical
Switches are devices that separate which domains? - Answers Collision domain
What term refers to the bandwidth for traffic within a switch? - Answers Backplane
Inside your corporate office building, If you have 300 Ethernet jacks, 15 access points, and 10 servers,
how many switch ports do you need? - Answers At least 325
What does an Ethernet device do if it detects a collision while trying to transmit - Answers Stop
transmitting and wait a short time
Which of the following is not a physical layer device? - Answers A. Hub
CORRECT - B. Switch
C. Repeater
D. Network Interface Card
The most common Ethernet cable is an example of what type of cable? - Answers Twisted Pair
What is the device that converts an analog signal into a digital signal? - Answers Modem
What is the primary downside of current satellite communication technology? - Answers Latency
ASCII and MP3 are examples of different ways to do what? - Answers Encode information
1001 in binary represents the same value as decimal 9. - Answers True (8 __ __ 1 = 9)
How much data can 1 hexadecimal digit represent? - Answers 1/2 byte (4 bits)
The WiFi encryption protocol you should be using on your networks is which of the following? -
Answers WPA2 (open access is completely open, and WPA is broken. WPA3 coming soon)
WiFi 6 is another name for which 802.11 protocol? - Answers 802.11ax
Why is MAC filtering not a strong protection for your network? - Answers MAC addresses can be
spoofed, and devices can change their MAC address.
What is the term for the signal loss that occurs when a radio signal passes through something else? -
Answers Attenuation
When a Wifi device advertises its speed (e.g. 11 Gpbs!!!), that is referring to shared bandwidth for all
devices on the same access point - Answers True
Your EC2 instances have a hard drive that persists, even when the instance is shut down and
rebooted. That must mean that they are using which AWS storage solution? - Answers Elastic Block
Store
What does subnetting do? - Answers Divides a single large network into smaller networks
A class A network (e.g. 15.0.0.0/8) must have 16,000,000 hosts on one network - Answers
If you take the 173.55.0.0/16 network and subnet it with a new subnet mask of /19, how many
subnets can you create? - Answers 8
If you want to create 25 subnets on your network, how many bits do you need to have for subnetting
- Answers 5
Subnet masks can only be /8, /16, or /24. - Answers False
With an IP address of 128.187.17.44 and a subnet mask of 255.255.240.0, what is the network
address? - Answers 128.187.16.0
With an IP address of 217.56.77.55/29, how many hosts can be on the network? - Answers 6
What is not a reason for creating subnets? - Answers to reduce the number of networks you need to
manage.
What is contained in most DHCP offers? - Answers - Subnet mask
- IP address
- Default Gateway
- DNS servers
A client will first attempt to renew a DHCP lease at what time? - Answers Halfway through the lease
time
A DHCP Discover message is best compared to what? - Answers Your computer screaming that it is
lost and needs help.
IP address configuration can be configured manually, but is more often best handled by DHCP. -
Answers True
The world is running out of IPv4 addresses - Answers True
the best comparison to explain the number of IPv6 addresses is which of the following? - Answers A.
As many LEGO bricks would fit in the white house.
B. As many computers as there are on earth.
C. As many water droplets to fill a swimming pool
CORRECT - D. More than all of the above combined
Which of the following is not a valid IPv6 address - Answers A. ::
B. ::1
C. 2bce::1234
CORRECT - D. 2fe3::44aa:7776::2dbe
What has slowed down the IPv4 exhaustion issue - Answers Private IP addresses
With IPv6, every device on the planet will be able to have a unique public IP Address. - Answers Yes
Once the destination network is identified, what information from the routing table does the
computer use to identify the router that will handle the packet? - Answers Gateway
What type of routing does your computer do? - Answers Default
What information does a router store in its routing table? - Answers Metric, Interface, Network
Address
What is cloud computing? - Answers On-demand delivery of IT resources and applications through the
internet with pay-as-you-go pricing.
What is another name for on-premises deployment? - Answers Private cloud deployment
How does the scale of cloud computing help you save costs? - Answers the aggregated cloud usage
from a large number of customers results in lower pay-as-you-go prices.
Which AWS service is the best choice for publishing messages to subscribers? - Answers Amazon
Simple Notification Service (SNS)
What are the contract length option for EC2 reserved instance? - Answers 1 year, 3 year
You have a workload that will run for a total of 6 months that can withstand interruptions. what
would be the most cost-efficient EC2 purchasing option? - Answers Spot instance
, Which process is an example of Elastic Load Balancing? - Answers Ensuring that no single Amazon EC2
instance has to carry the full workload on its own
The A in the CIA triad refers to what? - Answers Availability
What is the AWS term that refers to data centers in different geographical locations, e.g. Ohio, Paris,
or Sao Paulo? - Answers Regions
Which of the following do you need to consider when selecting a region? - Answers Distance from
your customers
Availability of services
Legal requirements
What is the purpose of running services in multiple availability zones? - Answers To ensure resilience
from natural and other disasters
What region are your AWS Educate instances using? - Answers Northern Virginia
Amazon CloudFront is an example of what? - Answers Content Delivery Network
What have we been using to create AWS resources in class so far? - Answers Infrastructure as Code
Which AWS service involves creating a direct fiber connection from your data center into AWS? -
Answers AWS Direct Connect
What service controls what is allowed onto a network or subnet? - Answers Network Access Control
List
What is the key difference between stateful and stateless network monitoring? - Answers Stateful
monitoring automatically allows return traffic
What is the name for Amazon's DNS service? - Answers Route 53
When an Ethernet device detects a collision, what does it do? - Answers Drops the frame
What is the purpose of the ARP Protocol? - Answers To determine the MAC address for an IP address
An ARP request is required for each frame to be sent across the network - Answers False
Which network topology involves a direct connection between each device on the network? -
Answers Mesh
A hub is a network device that operates at which layer of the TCP/IP model? - Answers Physical
Switches are devices that separate which domains? - Answers Collision domain
What term refers to the bandwidth for traffic within a switch? - Answers Backplane
Inside your corporate office building, If you have 300 Ethernet jacks, 15 access points, and 10 servers,
how many switch ports do you need? - Answers At least 325
What does an Ethernet device do if it detects a collision while trying to transmit - Answers Stop
transmitting and wait a short time
Which of the following is not a physical layer device? - Answers A. Hub
CORRECT - B. Switch
C. Repeater
D. Network Interface Card
The most common Ethernet cable is an example of what type of cable? - Answers Twisted Pair
What is the device that converts an analog signal into a digital signal? - Answers Modem
What is the primary downside of current satellite communication technology? - Answers Latency
ASCII and MP3 are examples of different ways to do what? - Answers Encode information
1001 in binary represents the same value as decimal 9. - Answers True (8 __ __ 1 = 9)
How much data can 1 hexadecimal digit represent? - Answers 1/2 byte (4 bits)
The WiFi encryption protocol you should be using on your networks is which of the following? -
Answers WPA2 (open access is completely open, and WPA is broken. WPA3 coming soon)
WiFi 6 is another name for which 802.11 protocol? - Answers 802.11ax
Why is MAC filtering not a strong protection for your network? - Answers MAC addresses can be
spoofed, and devices can change their MAC address.
What is the term for the signal loss that occurs when a radio signal passes through something else? -
Answers Attenuation
When a Wifi device advertises its speed (e.g. 11 Gpbs!!!), that is referring to shared bandwidth for all
devices on the same access point - Answers True
Your EC2 instances have a hard drive that persists, even when the instance is shut down and
rebooted. That must mean that they are using which AWS storage solution? - Answers Elastic Block
Store
