Identify the Differences Between Private and Public IP Addressing NETWORKING-FOUNDATIONS Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the primary purpose of using private IP addresses inside an organization?

   • ATo replace the need for a default gateway
   • BTo allow devices to communicate internally without consuming public address space
   • CTo guarantee a unique address for every device worldwide
   • DTo make every device directly reachable from the internet
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   How does NAT enable multiple devices with private IP addresses to access the internet using a single public IP?

   • ABy assigning each device a unique public IP address
   • BBy storing a copy of the public IP on each device
   • CBy tracking each connection and mapping it to a unique port number
   • DBy broadcasting all traffic to the internet without translation
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   A company is designing a new branch office network. They have a single public IP address from their ISP for internet connectivity. They need to connect 200 employee workstations, 20 IP phones, and 15 network printers. Which addressing strategy should they use?

   • AUse private IP addresses from the 192.168.0.0/16 range for all internal devices and use NAT on the edge router to translate to the single public IP.
   • BUse the 172.16.0.0/12 range for all devices and configure the ISP router to route that entire block to the internet.
   • CUse public IP addresses for the servers and printers, and private IPs for the workstations and phones.
   • DAssign each device a public IP address from the ISP's allocation to avoid NAT overhead.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which of the following is a private IP address range as defined by RFC 1918?

   • A169.254.0.0/16
   • B172.32.0.0/12
   • C192.169.0.0/16
   • D10.0.0.0/8
   Reveal Solution Discussion Select an answer first
6. 15foundation · easy

   What is a key difference between private and public IP address allocation?

   • APrivate IPs must be globally unique, while public IPs can be reused
   • BPublic IPs are allocated by regional registries, while private IPs can be assigned by anyone
   • CPublic IPs are only used for testing, while private IPs are used for production
   • DPrivate IPs are assigned by IANA, while public IPs are assigned by ISPs
   Reveal Solution Discussion Select an answer first