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IP Addressing & Subnetting (CCST Networking) Flashcards
Cisco CCST Networking 100-150 Flashcards
Study our IP Addressing & Subnetting (CCST Networking) flashcards for the Cisco CCST Networking 100-150 exam with 45+ flashcards. View as flashcards, a searchable table, or as a fun matching game.
| Front | Back |
| APIPA range | 169.254.0.0/16 |
| Benefit of route summarization | Reduces routing table size and improves routing efficiency |
| Broadcast address for 10.0.0.5 255.255.255.248 | 10.0.0.7 |
| Convert /26 to dotted mask | 255.255.255.192 |
| Convert 255.255.255.0 to CIDR | /24 |
| Define IPv4 address | 32 bit numerical address written in dotted decimal as four octets |
| Define IPv6 address | 128 bit address written in hexadecimal colon separated groups |
| Difference between network and broadcast address | Network is first address with host bits zero broadcast is last address with host bits one |
| Explain binary subnetting basics | Borrow host bits to create subnets then calculate addresses by binary ranges |
| First usable host for 192.168.1.0/24 | 192.168.1.1 |
| Given 10.10.5.129/25 what is broadcast address | 10.10.5.255 |
| Given 10.10.5.129/25 what is network address | 10.10.5.128 |
| Given 192.168.4.17/28 what is broadcast address | 192.168.4.31 |
| Given 192.168.4.17/28 what is network address | 192.168.4.16 |
| Hosts per /20 | 4094 usable hosts |
| Hosts per /26 | 62 usable hosts |
| How many /26 subnets in a /24 | 4 subnets |
| How to calculate hosts per subnet formula | 2 to the power of host bits minus 2 except special cases like /31 and /32 |
| How to choose aggregation boundaries | Align prefixes on binary boundaries and aggregate only contiguous prefixes |
| How to find broadcast address from network and mask | Set all host bits to one to get broadcast |
| How to find network address from IP and mask | Perform bitwise AND between IP and mask |
| IPv4 loopback range | 127.0.0.0/8 |
| IPv6 link local range | fe80::/10 |
| IPv6 loopback address | ::1/128 |
| IPv6 unique local address range | fc00::/7 |
| Last usable host for 192.168.1.0/24 | 192.168.1.254 |
| Minimum prefix for 2000 hosts | /21 because /21 supports 2046 usable hosts |
| Minimum prefix for 50 hosts | /26 because /26 supports 62 usable hosts |
| Network address for 192.168.1.130 255.255.255.192 | 192.168.1.128 |
| Private IPv4 ranges | 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 |
| Purpose of a broadcast address | To deliver a packet to all hosts in a broadcast domain |
| Subnets when splitting /16 into /20 | 16 subnets |
| Typical IPv6 interface ID length | 64 bits used for interface identifier in common /64 networks |
| Usable hosts for /24 | 254 usable hosts |
| Usable hosts for /30 | 2 usable hosts |
| Usable hosts for /31 per RFC 3021 | 2 usable addresses for point to point links per RFC 3021 |
| Usable hosts for /32 | Single host address used for a host route |
| What is a subnet mask | A bitmask that separates network bits from host bits |
| What is CIDR notation | A suffix slash number indicating the network prefix length |
| What is dual stack | Running IPv4 and IPv6 simultaneously on the same host or router |
| What is EUI 64 | A method to create IPv6 interface ID from MAC by inserting FFFE and flipping the universal local bit |
| What is subnet zero | The first subnet where host bits are zero historically restricted now commonly allowed |
| What is supernetting | Combining contiguous smaller prefixes into a larger prefix for route aggregation |
| What is VLSM | Variable Length Subnet Masking allows different sized subnets in same network |
| Why use VLSM | To optimize address utilization by matching subnet size to host needs |
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About the Flashcards
Flashcards for the Cisco CCST Networking exam provide concise practice on IP addressing and subnetting fundamentals. Deck items cover IPv4 and IPv6 notation, subnet masks and CIDR, mask/CIDR conversions, calculating network and broadcast addresses, usable-host counts including /31 and /32 cases, and special ranges such as private, APIPA, and loopback.
Use the set to review terminology and step-by-step methods: binary subnetting, VLSM, supernetting and route summarization, calculating first/last usable addresses, converting dotted masks to CIDR and vice versa, EUI-64 and IPv6 interface IDs, and dual-stack concepts. Cards emphasize quick rules, formulas, and examples needed for exam-style calculations.
Topics covered in this flashcard deck:
- IPv4 addressing and masks
- CIDR and mask conversions
- Subnetting and VLSM
- Network and broadcast calculations
- IPv6 addressing and EUI-64
- Special address ranges