Network+ Q&A

Q1: What is the designated IPv4 address for testing the local loopback function of the protocol suite on a host?
127.0.0.1

Q2: A Windows system failed to get an address from a DHCP server and self-assigned an IP. What is the first possible address in the Automatic Private IP Addressing (APIPA) range it could use?
169.254.0.1

Q3: What is the last usable address in the APIPA range that a Windows machine might assign itself if a DHCP server is unavailable?
169.254.255.254

Q4: What is the starting address of the Class A private address range as defined by RFC 1918?
10.0.0.0

Q5: What is the ending address of the Class A private address range?
10.255.255.255

Q6: What is the final address in the Class B private range specified by RFC 1918?
172.31.255.255

Q7: What IP address begins the RFC 1918 private address range for Class B networks?
172.16.0.0

Q8: According to RFC 1918, what is the starting IP address for the Class C private address range?
192.168.0.0

Q9: What is the last address available in the Class C private address range?
192.168.255.255

Q10: If a system cannot get an address from a DHCP server and does not support APIPA, what IP address does it typically assign itself?
0.0.0.0

Q11: What is the broadcast IP address used in IPv4 to send a message to all devices within a specific network segment?
255.255.255.255

Q12: What is the first IP address in the range designated for Class A addresses?
1.0.0.0

Q13: What is the last network address available in the Class A range?
126.0.0.0

Q14: What is the starting address for the Class B address space?
128.0.0.0

Q15: What is the last network address in the Class B range?
191.0.0.0

Q16: What is the first network address designated for Class C networks?
192.0.0.0

Q17: What is the last network address available in the Class C range?
223.0.0.0

Q18: What is the first address in the range reserved for Class D multicast groups?
224.0.0.0

Q19: What is the last address in the Class D multicast range?
239.255.255.255

Q20: What is the starting address of the range reserved for experimental use, also known as Class E?
240.0.0.0

Interview Practice Questions