Practice Quiz SeriesIPv4 Addressing FundamentalsFull nameEmail addressGenderSelectMaleFemaleOtherPrefer not to sayCurrent statusSelectSchool studentCollege studentWorking professionalJob seekerTeacher/TrainerOther I agree that my details and score may be stored for quiz administration.Start QuizQuestion 1 of 25IPv4 Addressing FundamentalsEasy1 mark(s)1. Which statements describe historical Class B addressing?Select all correct answers.Its first octet is historically in the range 128–191Its default mask is 255.0.0.0Its classful prefix is /24Its classful prefix is /16Its classful default mask is 255.255.0.0IPv4 Addressing FundamentalsMedium1 mark(s)2. Which statements correctly describe the host portion of an IPv4 unicast address within a subnet?Select all correct answers.It consists of address bits not used by the network prefixIt is always exactly the fourth octetIt identifies an interface within the subnetIts size depends on the prefix lengthIt is the same thing as a MAC addressIPv4 Addressing FundamentalsMedium1 mark(s)3. Which statements about 255.255.255.255 are correct?Select all correct answers.It is the IPv4 limited broadcast addressIt is the standard loopback addressIt is intended for the local network segment rather than normal router forwardingIt is part of RFC 1918 private spaceA host may use it when it does not yet know the local network prefixIPv4 Addressing FundamentalsEasy1 mark(s)4. Which statements about IPv4 loopback addressing are correct?Select all correct answers.127.0.0.1 identifies the default gateway127.0.0.0/8 is reserved for loopbackLoopback traffic remains on the local host127.0.0.1 is commonly used as a loopback address127.0.0.0/8 is RFC 1918 private spaceIPv4 Addressing FundamentalsMedium1 mark(s)5. Which statements about RFC 1918 private IPv4 addresses are correct?Select all correct answers.NAT is commonly used when private hosts access the public InternetThey are guaranteed to be globally uniqueThey must never be used inside a LANThey are intended for private networksThey are not globally routed on the public InternetIPv4 Addressing FundamentalsEasy1 mark(s)6. Which statements describe historical Class C addressing?Select all correct answers.Its classful prefix is /8Its classful prefix is /24Its first octet is historically in the range 192–223Its classful default mask is 255.255.255.0Its default mask is 255.255.0.0IPv4 Addressing FundamentalsMedium1 mark(s)7. Which IPv4 addresses are special-purpose rather than ordinary globally routable unicast addresses?Select all correct answers.255.255.255.2558.8.8.8169.254.10.201.1.1.1127.0.0.1IPv4 Addressing FundamentalsMedium1 mark(s)8. Which ranges were historically associated with classful Class A, B, and C unicast addressing based on the first octet?Select all correct answers.Class C: 192–223Class A: 1–126Class B: 128–191Class A: 192–223Class C: 1–126IPv4 Addressing FundamentalsEasy1 mark(s)9. Which are valid IPv4 addresses?Select all correct answers.192.168.300.110.10.10.256172.16.25.110.0.0.254192.168.1.10IPv4 Addressing FundamentalsMedium1 mark(s)10. Which statements about CIDR are correct?Select all correct answers.CIDR supports more flexible address allocation than classful addressingCIDR requires every network to use only /8, /16, or /24CIDR allows prefixes that do not follow historical class boundariesCIDR makes subnet masks unnecessary as a conceptCIDR uses prefix-length notation such as /24IPv4 Addressing FundamentalsMedium1 mark(s)11. Which statements correctly describe the network portion of an IPv4 address?Select all correct answers.It is always exactly the first octetIts length is determined by the subnet mask or prefix lengthIt identifies the subnet to which the address belongsRouters use network prefixes when making forwarding decisionsIt is identified by the TCP port numberIPv4 Addressing FundamentalsHard1 mark(s)12. Which practices help correctly identify an IPv4 subnet and host range?Select all correct answers.Calculate the network address using the subnet maskAssume every 192.x.x.x address uses /24Determine the subnet only from whether the address is private or publicDetermine the broadcast boundary before selecting ordinary host addressesExamine both the IPv4 address and prefix lengthIPv4 Addressing FundamentalsMedium1 mark(s)13. Which tests can 127.0.0.1 help perform?Select all correct answers.Check whether the local IP stack respondsVerify that a remote router is reachableTest a service bound to localhostTest local host communication without sending packets onto the physical networkVerify that an Ethernet cable is physically connectedIPv4 Addressing FundamentalsEasy1 mark(s)14. For 10.10.20.50/24, which addresses are in the same /24 subnet?Select all correct answers.10.10.20.110.10.20.20010.10.20.25410.11.20.5010.10.21.1IPv4 Addressing FundamentalsEasy1 mark(s)15. For host 192.168.1.25 with subnet mask 255.255.255.0, which statements are correct?Select all correct answers.192.168.1.25 is a host address in that subnetThe broadcast address is 192.168.1.255The network address is 192.168.0.0The network address is 192.168.1.0The broadcast address is 192.168.255.255IPv4 Addressing FundamentalsEasy1 mark(s)16. Which addresses are inside RFC 1918 private address space?Select all correct answers.10.20.30.40192.168.100.25172.20.10.5172.32.1.18.8.8.8IPv4 Addressing FundamentalsEasy1 mark(s)17. Which statements describe historical Class A addressing?Select all correct answers.It is defined by a /24 classful prefixIts classful prefix is /8Its classful default mask is 255.0.0.0Its default mask is 255.255.255.0Its first octet is historically in the range 1–126IPv4 Addressing FundamentalsEasy1 mark(s)18. Which IPv4 blocks are private address space defined by RFC 1918?Select all correct answers.10.0.0.0/8172.16.0.0/12127.0.0.0/8169.254.0.0/16192.168.0.0/16IPv4 Addressing FundamentalsEasy1 mark(s)19. Which statements about an IPv4 address are correct?Select all correct answers.It is 128 bits longEach octet can range from 0 to 999Each octet represents 8 bitsIt is 32 bits longIt is commonly written as four decimal octetsIPv4 Addressing FundamentalsEasy1 mark(s)20. Which prefix and mask pairs are equivalent?Select all correct answers./16 — 255.255.0.0/24 — 255.255.0.0/8 — 255.0.0.0/24 — 255.255.255.0/16 — 255.255.255.0IPv4 Addressing FundamentalsHard1 mark(s)21. A Windows host displays a 169.254.x.x address after being configured for DHCP. Which conditions should you investigate?Select all correct answers.VLAN or relay configuration affecting DHCPConnectivity to the DHCP serviceWhether the host received a normal DHCP lease successfullyDHCP server availabilityWhether 169.254.0.0/16 is the configured public Internet subnetIPv4 Addressing FundamentalsHard1 mark(s)22. A host has 192.168.10.25/24 and needs to reach 192.168.20.25/24. Which statements are correct?Select all correct answers.The two addresses are in the same /24 because both begin with 192.168The source must replace the destination IP with its own IPThe source normally sends the packet toward a router or default gatewayLayer 3 routing is required between the two /24 networksThe destination is outside the source host's /24 subnetIPv4 Addressing FundamentalsMedium1 mark(s)23. Which statements about public IPv4 addresses are generally correct?Select all correct answers.They can be globally routable when properly allocated and advertisedTheir global use requires addressing that is unique within the public routing contextThey must not come from RFC 1918 private ranges169.254.0.0/16 is ordinary public address spaceEvery public address is automatically reachable from every Internet hostIPv4 Addressing FundamentalsMedium1 mark(s)24. Which statements about 169.254.0.0/16 are correct?Select all correct answers.It is the IPv4 loopback blockIt is IPv4 link-local address spaceIt is not intended for normal routed communication across routersIt is an RFC 1918 private blockIt can be self-assigned when normal address configuration is unavailableIPv4 Addressing FundamentalsEasy1 mark(s)25. For the subnet 192.168.50.0/24, which statements are correct under conventional IPv4 subnetting?Select all correct answers.192.168.50.1 can be assigned to a host interface192.168.50.0 is normally assigned to an ordinary host192.168.50.255 is the directed broadcast address192.168.50.255 is normally assigned to an ordinary host192.168.50.0 is the network addressPreviousNextSubmit Quiz Related Discover more from SanchitGurukul Subscribe to get the latest posts sent to your email. Type your email… Subscribe Previous article ☟OSI & TCP/IP ModelsRead the guideNext article ☟Subnetting FundamentalsRead the guide
