CN · Network Layer & IP interview questions

1. A.a globally unique, Internet-routable address assigned to a host by an authority or provider
2. B.the protocol that maps a known IP address to its MAC address on the local link
3. C.a 32-bit logical address, written as four dotted decimals, that identifies a host on a network
4. D.writing an address with a slash and prefix length, like /24, to express the network portion compactly

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1. A.default gateway
2. B.TTL (time to live)
3. C.IPv4 address
4. D.subnet mask

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1. A.IPv4 address — a 32-bit logical address, written as four dotted decimals, that identifies a host on a network
2. B.IPv4 address — the router address a host sends packets to when the destination lies outside its own subnet
3. C.IPv4 address — an IP header field decremented at each hop that discards a packet when it reaches zero to stop loops
4. D.IPv4 address — a 32-bit value that splits an IP address into its network and host portions

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1. A.writing an address with a slash and prefix length, like /24, to express the network portion compactly
2. B.translating private internal addresses to a public address so many hosts share one public IP
3. C.a 128-bit logical address, written in eight hexadecimal groups, that vastly expands the address space
4. D.routing builds the path-selection tables, while forwarding moves each arriving packet to the chosen next hop

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1. A.TTL (time to live)
2. B.IPv6 address
3. C.fragmentation
4. D.CIDR notation

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1. A.IPv6 address — translating private internal addresses to a public address so many hosts share one public IP
2. B.IPv6 address — an IP header field decremented at each hop that discards a packet when it reaches zero to stop loops
3. C.IPv6 address — the protocol that maps a known IP address to its MAC address on the local link
4. D.IPv6 address — a 128-bit logical address, written in eight hexadecimal groups, that vastly expands the address space

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1. A.a globally unique, Internet-routable address assigned to a host by an authority or provider
2. B.splitting an IP packet larger than the link MTU into smaller pieces reassembled at the destination
3. C.a 32-bit value that splits an IP address into its network and host portions
4. D.dividing one large network into smaller logical subnetworks by borrowing host bits for the network part

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1. A.private IP address
2. B.ARP (Address Resolution Protocol)
3. C.subnet mask
4. D.CIDR notation

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1. A.subnet mask — translating private internal addresses to a public address so many hosts share one public IP
2. B.subnet mask — a 32-bit value that splits an IP address into its network and host portions
3. C.subnet mask — splitting an IP packet larger than the link MTU into smaller pieces reassembled at the destination
4. D.subnet mask — a 32-bit logical address, written as four dotted decimals, that identifies a host on a network

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1. A.a 32-bit logical address, written as four dotted decimals, that identifies a host on a network
2. B.a globally unique, Internet-routable address assigned to a host by an authority or provider
3. C.the router address a host sends packets to when the destination lies outside its own subnet
4. D.writing an address with a slash and prefix length, like /24, to express the network portion compactly

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1. A.routing vs forwarding
2. B.ARP (Address Resolution Protocol)
3. C.subnet mask
4. D.default gateway

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1. A.default gateway — routing builds the path-selection tables, while forwarding moves each arriving packet to the chosen next hop
2. B.default gateway — the router address a host sends packets to when the destination lies outside its own subnet
3. C.default gateway — an IP header field decremented at each hop that discards a packet when it reaches zero to stop loops
4. D.default gateway — a 32-bit logical address, written as four dotted decimals, that identifies a host on a network

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1. A.the router address a host sends packets to when the destination lies outside its own subnet
2. B.dividing one large network into smaller logical subnetworks by borrowing host bits for the network part
3. C.a network-layer protocol for diagnostics and error reporting, used by ping and traceroute
4. D.a 128-bit logical address, written in eight hexadecimal groups, that vastly expands the address space

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1. A.private IP address
2. B.CIDR notation
3. C.subnetting
4. D.default gateway

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1. A.subnetting — routing builds the path-selection tables, while forwarding moves each arriving packet to the chosen next hop
2. B.subnetting — a 128-bit logical address, written in eight hexadecimal groups, that vastly expands the address space
3. C.subnetting — dividing one large network into smaller logical subnetworks by borrowing host bits for the network part
4. D.subnetting — splitting an IP packet larger than the link MTU into smaller pieces reassembled at the destination

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1. A.routing builds the path-selection tables, while forwarding moves each arriving packet to the chosen next hop
2. B.an IP header field decremented at each hop that discards a packet when it reaches zero to stop loops
3. C.a globally unique, Internet-routable address assigned to a host by an authority or provider
4. D.writing an address with a slash and prefix length, like /24, to express the network portion compactly

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1. A.fragmentation
2. B.routing vs forwarding
3. C.CIDR notation
4. D.NAT (Network Address Translation)

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1. A.CIDR notation — writing an address with a slash and prefix length, like /24, to express the network portion compactly
2. B.CIDR notation — a network-layer protocol for diagnostics and error reporting, used by ping and traceroute
3. C.CIDR notation — dividing one large network into smaller logical subnetworks by borrowing host bits for the network part
4. D.CIDR notation — a 32-bit value that splits an IP address into its network and host portions

Answer + AI explanation with a free account

1. A.a globally unique, Internet-routable address assigned to a host by an authority or provider
2. B.a network-layer protocol for diagnostics and error reporting, used by ping and traceroute
3. C.dividing one large network into smaller logical subnetworks by borrowing host bits for the network part
4. D.an address from reserved ranges like 10.0.0.0/8 that is not routable on the public Internet

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1. A.subnetting
2. B.public IP address
3. C.private IP address
4. D.CIDR notation

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1. A.private IP address — an address from reserved ranges like 10.0.0.0/8 that is not routable on the public Internet
2. B.private IP address — translating private internal addresses to a public address so many hosts share one public IP
3. C.private IP address — routing builds the path-selection tables, while forwarding moves each arriving packet to the chosen next hop
4. D.private IP address — a network-layer protocol for diagnostics and error reporting, used by ping and traceroute

Answer + AI explanation with a free account

1. A.an address from reserved ranges like 10.0.0.0/8 that is not routable on the public Internet
2. B.a 128-bit logical address, written in eight hexadecimal groups, that vastly expands the address space
3. C.routing builds the path-selection tables, while forwarding moves each arriving packet to the chosen next hop
4. D.translating private internal addresses to a public address so many hosts share one public IP

Answer + AI explanation with a free account

1. A.NAT (Network Address Translation)
2. B.default gateway
3. C.ARP (Address Resolution Protocol)
4. D.private IP address

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1. A.NAT (Network Address Translation) — a globally unique, Internet-routable address assigned to a host by an authority or provider
2. B.NAT (Network Address Translation) — translating private internal addresses to a public address so many hosts share one public IP
3. C.NAT (Network Address Translation) — the protocol that maps a known IP address to its MAC address on the local link
4. D.NAT (Network Address Translation) — writing an address with a slash and prefix length, like /24, to express the network portion compactly

Answer + AI explanation with a free account

1. A.a 128-bit logical address, written in eight hexadecimal groups, that vastly expands the address space
2. B.a 32-bit logical address, written as four dotted decimals, that identifies a host on a network
3. C.an IP header field decremented at each hop that discards a packet when it reaches zero to stop loops
4. D.the protocol that maps a known IP address to its MAC address on the local link

Answer + AI explanation with a free account

1. A.ARP (Address Resolution Protocol)
2. B.TTL (time to live)
3. C.CIDR notation
4. D.routing vs forwarding

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1. A.ARP (Address Resolution Protocol) — an address from reserved ranges like 10.0.0.0/8 that is not routable on the public Internet
2. B.ARP (Address Resolution Protocol) — dividing one large network into smaller logical subnetworks by borrowing host bits for the network part
3. C.ARP (Address Resolution Protocol) — the protocol that maps a known IP address to its MAC address on the local link
4. D.ARP (Address Resolution Protocol) — an IP header field decremented at each hop that discards a packet when it reaches zero to stop loops

Answer + AI explanation with a free account

1. A.writing an address with a slash and prefix length, like /24, to express the network portion compactly
2. B.the protocol that maps a known IP address to its MAC address on the local link
3. C.a 32-bit value that splits an IP address into its network and host portions
4. D.a network-layer protocol for diagnostics and error reporting, used by ping and traceroute

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1. A.fragmentation
2. B.ICMP
3. C.default gateway
4. D.IPv6 address

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1. A.ICMP — the router address a host sends packets to when the destination lies outside its own subnet
2. B.ICMP — a network-layer protocol for diagnostics and error reporting, used by ping and traceroute
3. C.ICMP — the protocol that maps a known IP address to its MAC address on the local link
4. D.ICMP — writing an address with a slash and prefix length, like /24, to express the network portion compactly

Answer + AI explanation with a free account