Có 40+ tài liệu thuộc chủ đề "CCNA"
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the allowable length of the routing table. contents of the IP routing table. As part of the display, you see. Which of the following ranges could be used for an IP access list?. 116 Which of the following is a layer 2 device?. 118 Identify the 3 key features of the Cisco Discovery Protocol?. 146 What is the purpose of...
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2 Khái niệm về cấu hình Router. 3 Cấu hình các tính năng chung của router. 3.2 Các phím tắt cần sử dụng khi cấu hình router. 3.4 Làm việc với file cấu hình và IOS image. 3.4.2 Làm việc với file cấu hình và IOS. 4 Cấu hình router cho đường leased line. 4.2 Các bước cấu hình một...
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Which of the following router IOS commands could you use?. Which of the following commands will you use to display the configuration register setting on a router?. Which of the following commands should you use?. Which of the following commands can be used to obtain this information?. Which of the following commands would you issue to replace the Cisco router...
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a) Presentation b) Application c) Session d) Transport e) Network f) Data Link. e) Data Link. e) Data Link f) Physical. e) Network f) Data Link. 39) Token Ring standards define services for the OSI, MAC sublayer of the data link layer, and what other layer. 43) A NIC works at the Data Link layer.. 44) The Data Link layer...
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Describe the role of data networking in the human network.. Describe the characteristics of network architectures: fault tolerance, scalability, quality of service and security.. Among all of the essentials for human existence, the need to interact with others ranks just below our need to sustain life.. significant change agent in the world today, as it helps to create a world...
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Communicating Over the Network. In this course, we focus on these aspects of the information network:. Devices that make up the network – Media that connect the devices. Messages that are carried across the network. The TCP/IP model and the OSI model.. –The second element of communication is the destination, or receiver, of the message. –A third element, called a...
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Application Layer Functionality and Protocols. Describe how the TCP/IP Application Layer protocols provide the services specified by the upper layers of the OSI model.. Define how people use the Application Layer to communicate across the information network.. •In the OSI model, information is passed from one layer to the next, starting at the. Application layer down the hierarchy to the...
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OSI Transport Layer. In this chapter, we examine the role of the Transport layer. The Transport layer also encompasses these functions:. Explain the need for the Transport layer.. Identify the role of the Transport layer as it provides the end-to-end transfer of data between applications.. Describe the role of two TCP/IP Transport layer protocols: TCP and UDP.. Explain the key...
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OSI Network Layer. Identify the role of the Network layer as it describes communication from one end device to another end device.. specify the packet structure and processing used to carry the data from one host to another host. allows the Network layer to carry packets for multiple types of communications between multiple hosts.. –Not only the devices be identified...
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Addressing The Network – IPv4. Given an IPv4 address, classify by type and describe how it is used in the network.. Determine the network portion of the host address and explain the role of the subnet mask in dividing networks.. At the Network layer, the packets need to be identified with the source and destination addresses of the two end...
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Data Link Layer. Explain the role of Data Link layer protocols in data transmission.. Describe how the Data Link layer prepares data for transmission on network media.. The Data Link layer provides a means for. The Data Link layer performs two basic services:. The Data Link layer is responsible for the exchange of frames between nodes over the media of...
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Physical Layer. Explain the role of Physical layer protocols and services in supporting communication across data. Describe the purpose of Physical layer signaling and encoding as they are used in networks.. Physical Layer - Purpose. The OSI Physical layer layer accepts a complete frame from the Data Link layer and encodes it as a series of signals that are transmitted...
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Ethernet operates in the lower two layers of the OSI model: the Data Link layer and the Physical layer.. –The IEEE wanted to make sure that its standards were compatible with those of the International Standards Organization (ISO) and OSI model.. –The IEEE 802.3 standards address the needs of Layer 1 and the lower portion of Layer 2 of the...
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The router's LAN interfaces allow routers to connect to the LAN media. –Depending on the model of router, there can be multiple interface types for connection of LAN and WAN cabling.. Inside the LAN will be one or more hubs or switches to connect the end devices to the LAN.. –Multiple hubs can be interconnected, they remain a single collision...
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Define the role of the Internetwork Operating System (IOS).. Identify the factors contributing to the set of IOS commands available to a device.. •The initial configuration of the network device. Take the following steps to connect a terminal to the console port on the router:. •This keeps the user ID, password, and the details of the management session private. •Most...
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Link-State Routing Protocols. Routing Protocols and Concepts – Chapter 10. concepts of link-state p routing protocols.. Distance vector routing protocols are like road signs. Link-state routing protocols are more like a road map. because they create a topological map of the network and because they create a topological map of the network and each router uses this map to determine...
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–Contains - Router ID an area ID and Type code for OSPF packet type. LSAck - When an LSU is received, the router sends a Link-State Acknowledgement (LSAck) to confirm receipt of the LSU.. Router ID: ID of the originating router. Designated Router (DR): Router ID of the DR, if any. Backup Designated Router (BDR): Router ID of the BDR,...
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Describe how a hierarchical network supports the voice, and data needs of a small- or medium-sized business.. Describe the functions of each of the three levels of the hierarchical network design model, the principles of. hierarchical network design (aggregate connectivity,. Select appropriate devices to operate at each level of the hierarchy, including voice and video components.. Match the appropriate Cisco...
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MAC Addressing and Switch MAC Address Tables. Store-and-forward – The entire frame is received before any forwarding takes place. Cut-through – The frame is forwarded through the switch before the entire frame is received. common memory buffer which all the ports on the switch share. GUI-based Alternatives to the CLI. Using the Help Facility. The Switch Boot Sequence. The switch...
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Configure VLANs on the switches in a network topology. Default VLAN:. A native VLAN is assigned to an 802.1Q trunk port. An 802.1Q trunk port supports traffic coming from many VLANs (tagged traffic) as well as traffic that does not come from a VLAN (untagged traffic). The 802.1Q trunk port places untagged traffic on the native VLAN.. Native VLANs are...