1. What is IPv4 address ? Junior A. a 128-bit address written as eight groups of hexadecimal digits separated by colons B. the IPv4 range reserved for one-to-many delivery to subscribing hosts C. a 32-bit address written as four dotted decimal octets, e.g. 192.168.1.10 D. a mask of 255.255.255.192 giving 4 subnets of 62 usable hosts each
2. Which term means: "a 32-bit address written as four dotted decimal octets, e.g. 192.168.1.10"? Junior A. IPv6 address B. IPv4 address C. CIDR /24 prefix D. Private RFC 1918 ranges
3. Which statement is correct? Junior A. IPv4 address — private IPv6 addresses analogous to RFC 1918, not routed on the public Internet B. IPv4 address — a 32-bit address written as four dotted decimal octets, e.g. 192.168.1.10 C. IPv4 address — a value that separates the network portion of an IP from the host portion D. IPv4 address — a mask of 255.255.255.252 giving 4 addresses and 2 usable hosts, ideal for point-to-point links
4. What is IPv6 address ? Junior A. private IPv6 addresses analogous to RFC 1918, not routed on the public Internet B. a 128-bit address written as eight groups of hexadecimal digits separated by colons C. a 32-bit address written as four dotted decimal octets, e.g. 192.168.1.10 D. combining contiguous subnets into a single larger prefix to shrink routing tables
5. Which term means: "a 128-bit address written as eight groups of hexadecimal digits separated by colons"? Junior A. Network address B. IPv6 address C. CIDR /25 prefix D. Multicast 224.0.0.0/4
6. Which statement is correct? Junior A. IPv6 address — 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 reserved for private networks B. IPv6 address — a mask of 255.255.255.128 splitting a /24 into two subnets of 126 usable hosts each C. IPv6 address — a 128-bit address written as eight groups of hexadecimal digits separated by colons D. IPv6 address — a 32-bit address written as four dotted decimal octets, e.g. 192.168.1.10
7. What is CIDR /24 prefix ? Junior A. 2^(32 minus prefix) minus 2, subtracting the network and broadcast addresses B. a subnet mask of 255.255.255.0 providing 256 addresses (254 usable hosts) C. addresses valid only on a single link, used for neighbor discovery D. running IPv4 and IPv6 simultaneously on the same hosts and network
8. Which term means: "a subnet mask of 255.255.255.0 providing 256 addresses (254 usable hosts)"? Junior A. CIDR /8 prefix B. Dual stack C. APIPA / link-local 169.254.0.0/16 D. CIDR /24 prefix
9. Which statement is correct? Junior A. CIDR /24 prefix — the IPv4 range reserved for one-to-many delivery to subscribing hosts B. CIDR /24 prefix — a subnet mask of 255.255.255.0 providing 256 addresses (254 usable hosts) C. CIDR /24 prefix — the first address in a subnet identifying the subnet itself, with all host bits zero D. CIDR /24 prefix — a value that separates the network portion of an IP from the host portion
10. What is Private RFC 1918 ranges ? Junior A. subdividing a network into subnets of different sizes to conserve address space B. 2^(32 minus prefix) minus 2, subtracting the network and broadcast addresses C. a mask of 255.0.0.0 providing roughly 16.7 million addresses D. 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 reserved for private networks
11. Which term means: "10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 reserved for private networks"? Junior A. Private RFC 1918 ranges B. IPv6 unique local fc00::/7 C. APIPA / link-local 169.254.0.0/16 D. Dual stack
12. Which statement is correct? Junior A. Private RFC 1918 ranges — 2^(32 minus prefix) minus 2, subtracting the network and broadcast addresses B. Private RFC 1918 ranges — a 32-bit address written as four dotted decimal octets, e.g. 192.168.1.10 C. Private RFC 1918 ranges — 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 reserved for private networks D. Private RFC 1918 ranges — the last address in a subnet, used to reach all hosts on that subnet
13. What is Loopback address ? Junior A. a mask of 255.255.255.192 giving 4 subnets of 62 usable hosts each B. the IPv4 range reserved for one-to-many delivery to subscribing hosts C. 127.0.0.1, which refers to the local host itself D. a mask of 255.0.0.0 providing roughly 16.7 million addresses
14. Which term means: "127.0.0.1, which refers to the local host itself"? Junior A. CIDR /16 prefix B. Loopback address C. Broadcast address D. Dual stack
15. Which statement is correct? Junior A. Loopback address — 2^(32 minus prefix) minus 2, subtracting the network and broadcast addresses B. Loopback address — a mask of 255.0.0.0 providing roughly 16.7 million addresses C. Loopback address — 127.0.0.1, which refers to the local host itself D. Loopback address — subdividing a network into subnets of different sizes to conserve address space
16. What is Default gateway ? Junior A. the router IP a host uses to reach destinations outside its own subnet B. a mask of 255.0.0.0 providing roughly 16.7 million addresses C. 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 reserved for private networks D. the IPv4 range reserved for one-to-many delivery to subscribing hosts
17. Which term means: "the router IP a host uses to reach destinations outside its own subnet"? Junior A. Default gateway B. IPv6 address C. IPv4 address D. Dual stack
18. Which statement is correct? Junior A. Default gateway — the IPv4 range reserved for one-to-many delivery to subscribing hosts B. Default gateway — Stateless Address Autoconfiguration where hosts derive addresses from router advertisements C. Default gateway — the router IP a host uses to reach destinations outside its own subnet D. Default gateway — combining contiguous subnets into a single larger prefix to shrink routing tables
19. What is Subnet mask ? Mid A. a value that separates the network portion of an IP from the host portion B. the IPv4 range reserved for one-to-many delivery to subscribing hosts C. a mask of 255.255.255.128 splitting a /24 into two subnets of 126 usable hosts each D. combining contiguous subnets into a single larger prefix to shrink routing tables
20. Which term means: "a value that separates the network portion of an IP from the host portion"? Mid A. Subnet mask B. Usable hosts formula C. CIDR /8 prefix D. Broadcast address
21. Which statement is correct? Mid A. Subnet mask — a mask of 255.255.0.0 providing 65,536 addresses B. Subnet mask — combining contiguous subnets into a single larger prefix to shrink routing tables C. Subnet mask — a value that separates the network portion of an IP from the host portion D. Subnet mask — a mask of 255.255.255.192 giving 4 subnets of 62 usable hosts each
22. What is Broadcast address ? Mid A. an address identifying a single unique interface for one-to-one delivery B. the last address in a subnet, used to reach all hosts on that subnet C. private IPv6 addresses analogous to RFC 1918, not routed on the public Internet D. 2^(32 minus prefix) minus 2, subtracting the network and broadcast addresses
23. Which term means: "the last address in a subnet, used to reach all hosts on that subnet"? Mid A. Broadcast address B. Multicast 224.0.0.0/4 C. Private RFC 1918 ranges D. Usable hosts formula
24. Which statement is correct? Mid A. Broadcast address — the last address in a subnet, used to reach all hosts on that subnet B. Broadcast address — a mask of 255.255.255.192 giving 4 subnets of 62 usable hosts each C. Broadcast address — a 32-bit address written as four dotted decimal octets, e.g. 192.168.1.10 D. Broadcast address — addresses valid only on a single link, used for neighbor discovery
25. What is CIDR /30 prefix ? Mid A. subdividing a network into subnets of different sizes to conserve address space B. 127.0.0.1, which refers to the local host itself C. a mask of 255.255.255.252 giving 4 addresses and 2 usable hosts, ideal for point-to-point links D. Stateless Address Autoconfiguration where hosts derive addresses from router advertisements
26. Which term means: "a mask of 255.255.255.252 giving 4 addresses and 2 usable hosts, ideal for point-to-point links"? Mid A. IPv6 link-local fe80::/10 B. CIDR /30 prefix C. CIDR /26 prefix D. Variable Length Subnet Masking (VLSM)
27. Which statement is correct? Mid A. CIDR /30 prefix — running IPv4 and IPv6 simultaneously on the same hosts and network B. CIDR /30 prefix — the router IP a host uses to reach destinations outside its own subnet C. CIDR /30 prefix — a mask of 255.255.255.252 giving 4 addresses and 2 usable hosts, ideal for point-to-point links D. CIDR /30 prefix — a value that separates the network portion of an IP from the host portion
28. What is APIPA / link-local 169.254.0.0/16 ? Mid A. a mask of 255.255.255.252 giving 4 addresses and 2 usable hosts, ideal for point-to-point links B. running IPv4 and IPv6 simultaneously on the same hosts and network C. addresses a host self-assigns when no DHCP server responds D. 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 reserved for private networks
29. Which term means: "addresses a host self-assigns when no DHCP server responds"? Mid A. CIDR /16 prefix B. Network address C. APIPA / link-local 169.254.0.0/16 D. CIDR /8 prefix
30. Which statement is correct? Mid A. APIPA / link-local 169.254.0.0/16 — a value that separates the network portion of an IP from the host portion B. APIPA / link-local 169.254.0.0/16 — running IPv4 and IPv6 simultaneously on the same hosts and network C. APIPA / link-local 169.254.0.0/16 — addresses a host self-assigns when no DHCP server responds D. APIPA / link-local 169.254.0.0/16 — 127.0.0.1, which refers to the local host itself Showing 30 of 72 IP Addressing & Subnetting questions — the full set, with answers, explanations and an AI tutor on every question, is inside.