IP address
An IP address is a numerical address used by the Internet Protocol to identify a network interface and support packet delivery across networks.
Acing the CCNA Exam: Volume 1 Fundamentals and Protocols
An IP address is a network-layer identifier assigned to a host or interface for packet delivery across interconnected networks.
- How it is used
- Provides end-to-end Layer 3 addressing so hosts and routers can deliver packets across networks.
- How deep it goes
- Explains IPv4 structure, prefix lengths, router assignment, and verification, while deferring packet forwarding details.
- Examples
- Uses PC-to-server delivery, two LANs joined by a router, IPv4 notation, and Cisco interface configuration output.
- What you can do after
- Apply IPv4 addressing by configuring Cisco router interfaces and verifying their operational status.
Read how Acing the CCNA Exam: Volume 1 Fundamentals and Protocols explains IP address →
Kubernetes in Action, Second Edition
An IP address is a numeric network-layer identifier assigned to a device, network interface, or pod.
- How it is used
- Identifies a specific pod for direct application requests and distinguishes that access from traffic forwarded by a Service.
- How deep it goes
- Explains shared pod addressing, IP lookup, reachability, and direct packet behavior without detailing IP assignment or network-plugin implementation.
- Examples
- Demonstrates `kubectl get pod -o wide`, a request to `10.244.2.4:8080`, and `kubectl port-forward` followed by a localhost request.
- What you can do after
- Operate/configure it by finding a pod’s IP address and choosing direct pod access or port forwarding for a request.
Read how Kubernetes in Action, Second Edition explains IP address →
Acing the CCNA Exam: Volume 2 Advanced Networking and Security
An IP address is a numerical network-layer identifier assigned to an interface or host for communication across an IP network.
- How it is used
- Uses an IP address to identify a host and route packets, while DNS supplies it from a human-readable domain name.
- How deep it goes
- Explains addressing purpose, associated settings, DHCP leasing, DORA messages, and UDP ports, without covering address structure or Cisco commands.
- Examples
- Uses www.google.com/maps, DHCP client-server exchanges, and the four-message DORA sequence as concrete examples.
- What you can do after
- Evaluate how a client obtains an address and related settings, and diagnose the roles of DNS, DHCP, and UDP ports.
Read how Acing the CCNA Exam: Volume 2 Advanced Networking and Security explains IP address →
Rust in Action: Systems programming concepts and techniques
An IP address is a numerical network-layer identifier assigned to a host or interface in an Internet Protocol network.
- How it is used
- Connects hostname resolution to internet messaging and address assignment on a virtual network device.
- How deep it goes
- Works through an IPv4 DNS query and Linux address configuration, without attempting comprehensive networking-stack coverage.
- Examples
- Uses a Rust DNS resolver and a Linux TAP device assigned 192.168.42.100/24.
- What you can do after
- Apply it via trust-dns to request an IPv4 address for a hostname.
Read how Rust in Action: Systems programming concepts and techniques explains IP address →
Related concepts
- domain name systemproduced by · The Domain Name System is a distributed, hierarchical naming system that resolves domain names to IP addresses and other network resource records.
- routerused by · A router is a network device that forwards packets between networks based on destination addresses and routing information.
- mac addresscontrasts with · A MAC address is a link-layer identifier assigned to a network interface for communication over a local network link.
- INET data typeused by · INET is a database data type for storing IPv4 and IPv6 host addresses.
- arpused by · The Address Resolution Protocol is a local-network protocol that maps an IPv4 address to the corresponding link-layer address, typically a MAC address.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.