4_Network_Broadcast_address

Network/Boradcast address

• 네트워크 주소 : 하나의 네트워크를 통칭하기 위함

  • 해당 네트워크의 첫번째 IP주소
  • 계산방법 : IP주소와 서브넷마스크의 AND연산

• 브로드캐스트 주소 : 네트워크에 있는 클라이언트 모두에게 데이터를 보내기 위함

  • 해당 네트워크의 마지막 IP주소
  • 계산방법 : 서브넷 마스크의 '0'인 부분을 모두 1로 바꿈

• 참고 : 계산방법 상세

💬 연습문제 : 네트워크 주소 구하기

Q. What is the network address of a host with an IP address of 182.161.121.118/24?

- 180.0.0.0
- 182.161.121.64
- 182.161.120.0
- 182.161.121.116
- 0.0.0.0
- 182.161.96.0
- 182.160.0.0
- 182.161.121.0


Answer : 182.161.121.0
Solution : (182.161.121.118) & (255.255.255.0) = 182.161.121.0

Q. What is the network address of a host with an IP address of 107.212.146.212/25?

- 107.212.146.208
- 107.128.0.0
- 0.0.0.0
- 64.0.0.0
- 107.212.128.0
- 107.212.146.128
- 107.212.0.0
- 107.208.0.0
- 107.212.146.192


Answer : 107.212.146.128
Solution : (107.212.146.212) & (255.255.255.128) = 107.212.146.128

Q. What is the network address of a host with an IP address of 166.175.144.121/23?

- 166.128.0.0
- 166.175.144.0
- 166.175.144.96
- 128.0.0.0
- 166.174.0.0
- 166.0.0.0
- 166.0.0.0
- 166.175.144.120


Answer : 166.175.144.0
Solution : (166.175.144.121) & (255.255.254.0) = 166.175.144.0

Q. What is the network address of a host with an IP address of 116.45.224.50/8?

- 116.0.1.0
- 116.0.0.0
- 116.255.255.0
- 116.255.255.255


Answer : 116.0.0.0
Solution : (116.45.224.50) & (255.0.0.0) = 116.0.0.0

Q. What is the network address of a host with an IP address of 45.195.37.187/16?

- 45.194.37.187
- 45.0.0.0
- 45.194.0.0
- 45.195.0.0


Answer : 45.195.0.0
Solution : (45.195.37.187) & (255.255.0.0) = 45.195.0.0

💬 연습문제 : 브로드캐스트 주소 구하기

Q. What is the broadcast address of a host with an IP address of 51.254.122.100/24?

- 51.254.122.0
- 51.254.122.1
- 51.254.122.254
- 51.254.122.255

Answer : 51.254.122.255

• Source : adblanc/netwhat42-train