Flash cards for Cisco CCNA exam
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Ethernet supports the following topologies | show 🗑
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CSMA/CD | show 🗑
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show | Unshielded twisted-pair cables (UTP) with RJ-45 connectors
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Cat3 | show 🗑
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show | Rated Up to 16 Mbps
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show | Rated Up to 100 Mbps
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show | Rated Up to 1000 Mbps (Gigabit)
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ST, SC, LC, and MT-RJ | show 🗑
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thinnet or thicknet | show 🗑
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12-digit hexadecimal number (each number ranges from 0-9 or A-F) | show 🗑
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show | Ethernet Standards
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show | Fast Ethernet Standards
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show | 100 Mbps Half Duplex, 200 Mbps Full
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show | 220 to 550 meters
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1000BaseLX Distance | show 🗑
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Cable standard for Twisted pair (Cat5e) | show 🗑
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Collision detection is turned on The device can only send or receive at any given time Devices connected to a hub must use half-duplex communication | show 🗑
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show | Full Duplex
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Encapsulation | show 🗑
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show | ARP
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Used to discover the IP address of a device with a known MAC address | show 🗑
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Route discovery protocol that uses the link-state method | show 🗑
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Route discovery protocol that uses the distance-vector method | show 🗑
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show | TCP/IP Suite layer also called the Application Layer
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show | Bridge
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80/20 Rule | show 🗑
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Device used to isolate traffic to a segment | show 🗑
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show | Switch
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Devices that connect multiple segments or devices and forward packets to only one specific port | show 🗑
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If the destination address is not in the database, the packet is sent out all ports except for the one on which it was received. | show 🗑
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Store-and-forward | show 🗑
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Cut-through | show 🗑
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Fragment-free | show 🗑
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show | Router
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7 Layers of the OSI Model | show 🗑
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Benefits of the OSI Model | show 🗑
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Physical Layer of the OSI Model | show 🗑
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Data Link Layer of the OSI Model | show 🗑
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Network Layer | show 🗑
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Transport Layer | show 🗑
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show | -Interhost Communication - Establishes, manages and terminates sessions between applications.
-Makes sure a session is properly established
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show | Data Representation -Designed to represent data itself to the application
-Ensures data is readable by the receiving system
-Formats data
-Structures data
-Negotiates data transfer syntax for the application layer
-Provides encryption
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Application Layer | show 🗑
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show | Frame Check System (Also known as CRC) - placed during the framing process at the Data Link layer and is a mathematical computation of all the information in the frame. Used for error checking.
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show | Seen at the Application, Presentation and Session layer
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show | Formed at the Transport layer
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show | Formed at the network layer
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Frames | show 🗑
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Bits | show 🗑
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TCP/IP Model | show 🗑
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show | Maps IP addresses to BIA (Burned in Addresses) mac addresses
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show | Maps Mac addresses to IP addresses
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IP protocol | show 🗑
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show | Operates at the transport layer
Provides sockets based connectivity with connection limitations
Connectionless protocol
Limited error checking
Uses best effort delivery
No recovery features
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TCP Protocol | show 🗑
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DHCP Operation Messages | show 🗑
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show | Defines Asynchronous serial connections - OSI Layer 1
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HDLC | show 🗑
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show | Provides synchronous and asynchronous point to point connections -OSI Layer 2
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show | Communication protocols that allow telephone networks to carry voice, data,graphics, music and video - OSI Layer 1-3
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T568A Pinouts | show 🗑
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show | 1. Orange/W
2. Orange
3. GR/W
4. Blue
5. Blue/W
6. Green
7. Brown/W
8. Brown
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show | 3 and 6
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show | 1 and 2
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Used when the pins on each endpoint use different pins to send and receive data | show 🗑
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show | 48 bits
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show | 22 bits
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show | 24 bits
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What makes up the structure of a frame? | show 🗑
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show | 46-1500 bytes
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How many bytes in the preamble portion of a ethernet frame? | show 🗑
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How many bytes in the preamble portion of a 802.3 frame? | show 🗑
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How many bytes in the FCS portion of a frame? | show 🗑
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How many bytes in a frame? | show 🗑
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What is the first address in a frame? | show 🗑
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show | 6 bytes each
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show | unicast (1 station to another)
broadcast (communicate with all systems on a particular segment)
multicast (build applications to advertise directly to a client group or socket)
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show | binary numbers 1's and 0's
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show | 8
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show | Layers 1 and 2
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Name three WAN Networking devices | show 🗑
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show | Serial Communication
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What is DTE? | show 🗑
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What is DCE? | show 🗑
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show | Primarily EIA/TIA-232 (RS232) but can also use V.35 , X.21 and HSSI
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show | CSU/DSU
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Name Data-Link Protocols | show 🗑
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show | Dedicated (Leased lines such as T1,T3,E1,E3)0
Switched (circuit switched, packet switched, cell switched)
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What is the available bandwidth for a T1 leased line? | show 🗑
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show | 43.7 Mbps
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show | A phone company standard - digital signal type 0 and equals 65 kb in size
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show | 24 DS0 in a T1 (last DS0 used for framing)
672 DS0 in a T3
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What is the frame structure of HDLC? | show 🗑
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show | Flag | Address | Control | Proprietary | Data | FCS | Flag
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What is the difference between the industry standard HDLC and Cisco's proprietary HDLC? | show 🗑
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What is the default serial connection on all Cisco routers? | show 🗑
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show | Industry standard for encapsulation that includes authentication, link level compression, multiple layer 3 multiplexing and callback
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Point to point connection advantages | show 🗑
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Point to point connection disadvantages | show 🗑
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show | 56 Kbps
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show | 3 DS0 (1 used for the framing)
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show | The 24th DS0 channel used for framing
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show | Data Link Connection Identifier (used with Frame Relay)
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What is VCI? | show 🗑
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What is PAT? | show 🗑
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What is NAT? | show 🗑
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What is the 5 4 3 rule? | show 🗑
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show | Dedicated paths between sender and receiver hosts
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In the Hierarchy of design, what is the Core Layer? | show 🗑
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show | Provides Policy-based connectivity, peer reduction, and aggregation.
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In the Hierarchy of design, what is the Access Layer? | show 🗑
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show | Can not have more than 5 segments with 4 repeaters and 3 segments populated
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What is microsegmentation? | show 🗑
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show | Provides optimal transport between core routers and distribution sites
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show | Provides Policy-based connectivity, peer reduction, and aggregation.
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In the Hierarchy of design, what is the Access Layer? | show 🗑
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show | Source Port (16 bit)
Destination Port (16 bit)
UDP Length (16 bit)
UDP checksum (16 bit)
Data (level 5-7 data)
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What is the three way handshake for TCP? | show 🗑
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show | Fin
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What is the standard network management method that leads to consistent and predictable data flow across the network? | show 🗑
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What is the network management tool that manages latency, jitter and packet loss and provides priority and dedicated bandwidth? | show 🗑
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What is the address range for a class A IP address? | show 🗑
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What is the address range for a class B IP address? | show 🗑
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What is the address range for a class C IP address? | show 🗑
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show | classful subnetting
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show | Bandwidth, delay, hop count, cost
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show | Passes periodic copies of the entire routing table to neighbors, which accumulate distance vectors
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show | After the initial synchronization of routers, small, event triggered link state updates are passed between neighbors.
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In routing, what is the administrative distance number for RIP? | show 🗑
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show | 90
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In routing, what is the administrative distance number for OSPF? | show 🗑
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In routing, what is the administrative distance number for IS-IS? | show 🗑
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