8.3.3 The Internet Protocol Quiz Answers

8.3.3 The Internet Protocol Quiz Answers. Networking Basics Module 8 quiz exam answers

1. What criterion must be followed in the design of an IPv4 addressing scheme for end devices?

  • Each IP address must match the address that is assigned to the host by DNS.
  • Each IP address must be unique within the local network.
  • Each IP address needs to be compatible with the MAC address.
  • Each local host should be assigned an IP address with a unique network component.

Explanation: The IP address is independent of a MAC address. IP addresses that are assigned to end devices should be unique. They can be dynamically assigned by a DHCP server (not a DNS server) or manually assigned by local network administrators. If an address is assigned manually, the network administrator must make sure that it is unique.

2. How many octets exist in an IPv4 address?

  • 4
  • 8
  • 16
  • 32

Explanation: Each octet holds 8 bits and an IPv4 address contains 32 bits. Therefore, an IPv4 address contains four octets.

3. Which two parts are components of an IPv4 address? (Choose two.)

  • subnet portion
  • network portion
  • logical portion
  • host portion
  • physical portion
  • broadcast portion

Explanation: An IPv4 address is divided into two parts: a network portion – to identify the specific network on which a host resides, and a host portion – to identify specific hosts on a network. A subnet mask is used to identify the length of each portion.

4. What is the purpose of the subnet mask in conjunction with an IP address?

  • to uniquely identify a host on a network
  • to identify whether the address is public or private
  • to determine the subnet to which the host belongs
  • to mask the IP address to outsiders

Explanation: With the IPv4 address, a subnet mask is also necessary. A subnet mask is a special type of IPv4 address that coupled with the IP address determines the subnet of which the device is a member.

5. A technician is setting up equipment on a network. Which three devices will need IP addresses?
(Choose three.)

  • a printer with an integrated NIC
  • a web camera that is attached directly to a host
  • a server with two NICs
  • an IP phone
  • a wireless mouse
  • a PDA that is attached to a networked workstation

Explanation: A device needs an IP address in order to connect to a network. A device that is attached to a networked device can use the established connection to access the network.

6. Which statement describes the relationship of a physical network and logical IPv4 addressed networks?

  • A local physical network supports one IPv4 logical network.
  • A physical network can connect multiple devices of different IPv4 logical networks.
  • All devices connected to a physical network need to belong to the same IPv4 logical network.
  • End devices on different IPv4 logical networks can communicate with each other if they all connect to the same switch.

Explanation: Multiple IPv4 logical networks can exist on one physical network. The hosts with the same network number in their IPv4 addresses will be able to communicate with each other, but will not be able to communicate with the other hosts with a different network number without the use of routing.

7. How large are IPv4 addresses?

  • 8 bits
  • 16 bits
  • 32 bits
  • 64 bits
  • 128 bits

Explanation: An IPv4 address is a 32-bit logical address.

8. What is the network number for an IPv4 address 172.16.34.10 with the subnet mask of 255.255.255.0?

  • 10
  • 34.10
  • 172.16.0.0
  • 172.16.34.0

Explanation: The subnet mask is used to determine which part of the IPv4 address is the network number. Because the subnet mask is 255.255.255.0, the first three sets of numbers in an IPv4 address indicate the network number.

9. What are two features of IPv4 addresses? (Choose two.)

  • An IPv4 address contains 8 octets.
  • IPv4 is a logical addressing scheme.
  • An IPv4 addressing scheme is hierarchical.
  • IPv4 addresses are only used for communications on the internet.
  • An IPv4 address is bound to a network interface card to make it unique.

Explanation: IPv4 addresses are 32-bit (4 octets) long. IPv4 addresses are logical addresses and are assigned to host network interfaces as needed. IPv4 addressing is hierarchical and each IPv4 address is made up of two parts, the network number (or network address) and the host number. IPv4 addresses are used both on local networks and on the internet.

10. Consider the group of five IPv4 addresses each with the subnet mask of 255.255.255.0. Which two IPv4 addresses belong to the same local network? (Choose two.)

  • 192.168.10.2
  • 193.168.10.16
  • 192.168.10.56
  • 192.167.10.74
  • 192.168.100.62

Explanation: The subnet mask determines which part of the IP address is the network number. Because the subnet mask is 255.255.255.0, the first three sets of numbers in each IPv4 address indicate the network number. IPv4 addresses with the same network number are considered in the same local network.

11. The IT group needs to design and deploy IPv4 network connectivity in a new high school computer lab. The network design requires multiple logical networks be deployed on one physical network. Which technology is required to enable computers on different logical networks to communicate with each other?

  • routing
  • hosting
  • mapping
  • switching

Explanation: With IPv4 addressing, multiple logical networks can exist on one physical network if the network portion of the logical network host addresses is different. The hosts with the same network number in their IPv4 addresses will be able to communicate with each other but will not be able to communicate with the other hosts without the use of routing.

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