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40 Cards in this Set
- Front
- Back
- 3rd side (hint)
What is the maximum size of a frame? |
1500 bytes, or 12,000 bits |
Bytes |
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Where is a frame created? |
In the network card (NIC) |
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What comprises an Ethernet frame? |
Frame header (destination and last router MAC address); IP packet; data segment; frame trailer (CRC). |
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What comprises an IP packet?
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Header (destination and originating computer IP addresses); data (TCP data segment/UDP datagram, e.g.).
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How long is a MAC address? |
48 bits, or 12 hexadecimal characters |
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What is the OEM section of a MAC address? |
The first half (24 bits, or 6 hex chars) |
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What is the unique identifier of a MAC address? |
The last half (24 bits, or 6 hex chars) |
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What is the purpose of a MAC address? |
A unique identifier for a network card. The destination and origination MAC addresses are included in each frame. |
ID |
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What's the difference between broadcast and unicast? |
Unicast is directed to specific MAC addresse(s); broadcast is intended for all MAC addresses on the network. |
Communication |
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What is a broadcast MAC address? |
FF-FF-FF-FF-FF-FF |
Last char |
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What is a broadcast domain? |
Any group of networked computers that can communicate with each other. |
Communication |
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What are the differences between hubs, switches, and routers? |
A hub simply replicates all frames to all ports; a switch forwards frames to the intended port only (within the same network); a router connects separate networks. |
Targeting |
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What's the advantage of logical addressing over MAC addresses? |
Logical addressing defines networks. |
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What's the purpose of a routing table? |
Routing tables are used by routers to direct packets to the correct switch, based on the destination IP address. |
Routers |
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What's the difference between TCP (Transmission Control Protocol) and UDP (User Datagram Protocol)? |
TCP - re-assembles packets into complete data, using the sequence number in the packet. UDP - packet assembly is handled by the application. |
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What are a couple of good mnemonics for the OSI model? |
1-7: Please Do Not Throw Sausage Pizza Away. 7-1: All People Seem To Need Data Processing |
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What are the seven layers of the OSI model? |
7 - Appliation
6 - Presentation 5 - Session 4 - Transport 3 - Network 2 - Data Link 1 - Physical |
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What's a good mnemonic for the TCP/IP model? |
4-1: It's in A TIN |
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What are the four layers of the TCP/IP model? |
4 - Application
3 - Transport 2 - Internet 1 - Network Interface (a.k.a. Link) |
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What is the function of the Application layer of the OSI model, and what is the corresponding TCP/IP model layer? |
The application's ability to access network resources - network awareness. TCP/IP Application layer (#4). (Data portion of IP packet) |
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What is the function of the Presentation layer of the OSI model, and the corresponding TCP/IP model layer(s)? |
Translates data from the format used by applications to one that can be transmitted. Includes encryption. TCP/IP Application layer (#4). (Data formatting of IP packet) |
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What is the function of the Session layer of the OSI model, and the corresponding TCP/IP model layer(s)? |
Establishes, maintains, and synchronizes data exchange between endpoints. TCP/IP Application layer (#4). (API of IP packet) |
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What is the function of the Transport layer of the OSI model, and the corresponding TCP/IP model layer(s)? |
Connection services between devices and reliability of data. TCP/IP Transport layer (#3). (Sequence and port information of IP packet) |
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What is the function of the Network layer of the OSI model, and the corresponding TCP/IP model layer(s)? |
Discovery of destination systems and addressing, and mechanism by which data can be routed from one network to another. TCP/IP Transport layer (#2). (IP addresses of IP packet) |
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What is the function of the Data Link layer of the OSI model, and the corresponding TCP/IP model layer(s)? |
Error detection and correction and hardware addressing (MACs). TCP/IP Transport layer (#1). (MAC addresses of IP packet) |
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What is the function of the Physical layer of the OSI model, and the corresponding TCP/IP model layer(s)? |
Defines the physical structure of the network and the topology. TCP/IP Network Interface (Link) layer (#1). |
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What does the Application layer of the TCP/IP model define, and the corresponding OSI model layer(s)? |
Port numbers. OSI Application (#7); Presentation (#6); and Session (#5) layers. |
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What does the Transport layer of the TCP/IP model define, and the corresponding OSI model layer(s)? |
Assembly/disassembly of data into packets and the connection type (TCP vs UDP, e.g.). OSI Transport (#4) layer. |
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What does the Internet layer of the TCP/IP model define, and the corresponding OSI model layer(s)? |
IP addresses and routers. OSI Network (#3) layer. |
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What does the Network layer of the TCP/IP model define, and the corresponding OSI model layer(s)? |
Physical cabling, MAC addresses, NICs, switches. OSI Data Link (#2) and Physical (#1) layers. |
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What is included in the Physical layer of the OSI model? |
Hardware and topology |
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What is included in the Data Link layer of the OSI model? |
MAC addressing (not including routers) and error/flow-control mechanisms, including High-Level Data Link Control (HDLC), Layer 2 Tunneling Protocol (L2TP), Point-to-Point Protocol (PPP), Point-to-Point Tunneling Protocol (PPTP), Spanning Tree Protocol (STP), virtual LANs (VLANS). |
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What is included in the Network layer of the OSI model? |
Routing mechanisms using IP addresses. Routing Information Protocol (RIP), Open Shortest Path First (OSPF), Address Resolution Protocol (ARP), Reverse Address Resolution Protocol (RARP), Asynchronous Transfer Mode (ATM), Intermediate System-to-Intermediate System (IS-IS), IP Security (IPsec), Multiprotocol Label Switching (MLPS) |
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What is included in the Transport layer of the OSI model? |
Error checking, segmentation, service addressing, buffering, and windowing at the device level. |
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What is included in the Session layer of the OSI model? |
Synchronization of data between applications. Similar to Transport layer, but at application level. NetBIOS, Network File System (NFS), Server Message Block (SMB). |
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What is included in the Presentation layer of the OSI model? |
Transfer of data into a specific format - graphics, sound, or text to a specific file format, e.g. Also includes encryption and compression. |
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What is included in the Application layer of the OSI model? |
Definition of processes that enable applications to use network services. DHCP, DNS, RTP, FTP, HTTP, POP3, etc. |
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What device(s) work at the Physical layer of the OSI model? |
Hubs |
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What device(s) work at the Data Link layer of the OSI model? |
Wireless bridges, switches, NICs, access points |
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What device(s) work at the Network layer of the OSI model? |
Routers |
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