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Network Fundamentals (CCST Networking) Flashcards
Cisco CCST Networking 100-150 Flashcards
Study our Network Fundamentals (CCST Networking) flashcards for the Cisco CCST Networking 100-150 exam with 50+ flashcards. View as flashcards, a searchable table, or as a fun matching game.
| Front | Back |
| 1000BASE T meaning | 1000 Mbps Gigabit over four pair Category 5e or better up to 100 meters |
| 10GBASE T typical cabling | 10 Gigabit over Category 6a or better up to 100 meters |
| ARP cache basics | Local table mapping IP to MAC entries that time out after a short period |
| ARP request versus ARP reply | Request is broadcast asking who has IP Reply is unicast providing the MAC for that IP |
| ARP spoofing basic threat and mitigation | ARP spoofing sends false ARP replies Mitigate with static ARP DHCP snooping and dynamic ARP inspection |
| Auto negotiation and duplex mismatch effects | Auto negotiation negotiates speed and duplex Mismatch can cause collisions errors and poor performance |
| Broadcast storm causes and mitigations | Broadcast storms caused by loops or misconfiguration Mitigate with STP storm control and proper design |
| Calculate number of hosts from prefix | Number of hosts equals 2 to the power of 32 minus prefix minus 2 for network and broadcast |
| CIDR notation meaning of slash prefix | Slash followed by prefix length bits set to 1 in mask e g slash 24 equals 255 255 255 0 |
| Collision domain versus broadcast domain | Collision domain is area where frames can collide hubs are one domain switches separate per port Broadcast domain is bounded by routers or VLANs |
| Common DNS record types | A IPv4 AAAA IPv6 CNAME alias MX mail exchanger NS name server |
| Common fiber connector types LC SC ST | LC small form factor SC push pull square ST bayonet style |
| Common ICMP message types and codes | Echo request type 8 Echo reply type 0 Destination unreachable type 3 Time exceeded type 11 |
| Common TCP and UDP port numbers | HTTP 80 HTTPS 443 DNS 53 DHCP 67 68 SMTP 25 FTP 21 SSH 22 |
| Common UDP use case examples | DNS DHCP SNMP streaming video and VoIP where low latency and tolerable loss are preferred |
| Default gateway purpose | IP router address used to send packets destined for other networks |
| DHCP DORA steps | Discover Offer Request Acknowledge |
| DHCP lease renewal process basics | Client renews at 50 percent of lease time retries then rebinds to any server if renewal fails |
| DNS forwarder purpose | Forwarder forwards queries the DNS server cannot resolve to another resolver often ISP or caching server |
| Frame Packet Segment differences | Segment is transport layer unit Packet is network layer unit Frame is data link layer unit |
| How switches learn MAC addresses and age them | Switches learn source MAC from frames and store in CAM table entries age out after timer |
| ICMP basic uses | Used for network diagnostics e g ping echo request and reply and for reporting errors |
| Link aggregation LACP basic purpose | Combine multiple physical links into one logical link for redundancy and increased bandwidth |
| MAC address format | 48 bit hexadecimal usually displayed as six octets e g 00 1A 2B 3C 4D 5E |
| Meaning of 100BASE TX | 100 means 100 Mbps BASE TX uses two pair twisted pair Category 5e or better |
| Meaning of 10BASE T | 10 means 10 Mbps BASE means baseband T means twisted pair cabling |
| MTU and IP fragmentation basics | MTU is maximum transmission unit fragmentation splits packets larger than MTU may be avoided with PMTUD |
| OSI model layers from 1 to 7 | Layer 1 Physical 2 Data Link 3 Network 4 Transport 5 Session 6 Presentation 7 Application |
| Packet encapsulation order from application to wire | Application Transport Network Data Link Physical |
| Ping versus traceroute difference | Ping tests basic reachability traceroute shows path and per hop latency using TTL based probes |
| PoE standards 802 3af 802 3at 802 3bt power levels | 802 3af provides about 15 4W 802 3at provides about 30W 802 3bt provides up to 90W per port |
| Purpose of ARP | Resolve IPv4 addresses to MAC addresses within the local network |
| Purpose of DHCP | Automatically assign IP addresses subnet mask default gateway and DNS to hosts |
| Recursive versus iterative DNS queries | Recursive requires server to return final answer Iterative returns referral so client queries next server |
| RIP OSPF BGP brief use cases | RIP simple distance vector small networks OSPF link state interior routing BGP exterior routing between autonomous systems |
| RJ45 versus RJ11 connector difference | RJ45 is 8P8C used for Ethernet RJ11 is smaller used for telephone |
| Router versus Layer 3 switch difference summary | Both route IP traffic Routers include WAN features NAT ACLs Layer 3 switches optimized for LAN hardware switching speed |
| Singlemode versus Multimode fiber | Singlemode for long distance small core uses laser Multimode for shorter distance larger core uses LED or VCSEL |
| SNAT DNAT PAT explained | SNAT changes source DNAT changes destination PAT maps many internal hosts to one external IP using ports |
| Standard Ethernet MTU and jumbo frames | Standard Ethernet MTU 1500 bytes Jumbo frames commonly up to 9000 bytes depending on devices |
| STP Spanning Tree Protocol purpose | Prevent loops by blocking redundant switch paths and ensuring a loop free topology |
| Straight through versus crossover cable difference | Straight through connects same pins on each end Crossover swaps transmit and receive pairs used between similar devices |
| Switch Router Hub basic functions | Hub repeats electrical signals Switches forward frames by MAC address Routers route packets by IP |
| T568A versus T568B pinout difference | Pairs 2 and 3 are swapped resulting in different wiring order use same standard on both ends for straight through |
| TCP IP model layers and OSI mapping | Link Internet Transport Application roughly map to OSI Physical Data Link Network Transport Application |
| TCP three way handshake steps | SYN from client SYN ACK from server ACK from client establishes connection |
| TCP versus UDP main differences | TCP is connection oriented reliable ordered with flow control UDP is connectionless unreliable low overhead used for streaming |
| Unicast Multicast Broadcast explained | Unicast single destination Multicast multiple subscribed hosts Broadcast all hosts in local network |
| UTP versus STP difference | UTP is unshielded twisted pair STP is shielded twisted pair with extra shielding to reduce EMI |
| VLAN purpose and access versus trunk ports | VLANs segment broadcast domains Access port carries single VLAN Trunk carries multiple VLANs using 802 1Q tagging |
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About the Flashcards
Prepare for your certification with this comprehensive set of digital flashcards designed to reinforce your knowledge of fundamental networking concepts. These Flashcards for the Cisco CCST Networking exam are an essential study tool for mastering key terminology and technical details. Use this deck to quickly review definitions, compare related technologies, and solidify your understanding of how network components and protocols work together to form a modern network.
This deck covers a wide range of topics, from the foundational OSI and TCP/IP models to the specifics of IP addressing, subnetting, and common network services like DNS and DHCP. You'll also review various cabling standards, connector types, and the functions of essential hardware such as switches, routers, and hubs. By studying these concepts, you'll be better prepared to tackle questions related to network configuration, operation, and troubleshooting.
Topics covered in this flashcard deck:
- OSI and TCP/IP Model Layers
- Ethernet Standards and Cabling
- IP Addressing, Subnetting, and NAT
- Core Protocols like DNS, DHCP, and ICMP
- Switching, Routing, and VLAN Concepts
- TCP and UDP Transport Protocols