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A model provides an easy-to-understand description of the networking architecture and serves as the framework for the standards. As we look at the OSI and DoD models, you’ll see that they both use layers to represent areas of functionality. In OSI terms, each of the layered specifications uses the services of the layer below it to build an enriched service....
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Update Driver and follow the prompts to update the driver to the latest version.. Some of the more sophisticated and expensive local area network (LAN) testers will even pinpoint the exact location of the break.. It is important, however, that you are able to recognize the symptoms of physical layer problems so that you will know when to call in...
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For best performance, ensure that those computers that communicate with one another most often are on the same side of the bridge or switch. Frequently accessed file or print servers should be placed on the same side of the bridge or switch as those clients that use them most often. This results in multiple copies of the same data frame...
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Table 12.1 Well-Known TCP Ports. Table 12.1 illustrates some of the more common TCP applications and the ports they use:. A connectionless transport protocol like UDP doesn’t provide the same acknowledgment of receipt process as the connection-oriented TCP does.. if you don’t receive an answer after a few seconds, you can just ask again.. At the begin- ning of a...
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To install the SNMP service on a Windows computer, you need to be logged on as a member of the Administrators group. Telnet Telnet is a TCP/IP-based service that allows users to log onto a computer from a remote location, run character-mode or command-line utilities on the remote computer or device, and view files on a remote device. Telnet differs...
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This makes UDP the faster of the two, while TCP is the more reliable.. You are a network consultant specializing in supporting Small 1.. One of the workstations, \\OFFICE1, has an IP address of and has a file share that the other three workstations are able to access using the follow- ing syntax: \\OFFICE1\share. Your client has called you in...
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802.1 Higher Layer LAN Protocols. 802.2 Logical Link Control (LLC) (inactive). 802.3 Carrier Sense Multiple Access with Collision Detection. Ethernet 802.4 Token Bus (disbanded). 802.5 Token Ring (inactive). 802.6 Metropolitan Area Network (disbanded). 802.7 Broadband (disbanded). 802.8 Fiber Optic (disbanded). 802.9 Isochronous LAN (disbanded). 802.10 Security (disbanded). 802.11 Wireless LAN (WLAN). 802.12 Demand Priority (inactive). 802.14 Cable Modem. 802.15 Wireless...
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802.6j Standard for Connection Oriented Services on a Distributed Queue Dual Bus Subnetwork of a Metropolitan Area Network. 802.6k Distributed Queue Dual Subnetwork of a MAN. Supplement for MAC bridging 802.6l Point-to-Point Interface for Subnetwork of MAN. between two locations in a MAN 802.6m Subnetwork of MAN. 802.7 Recommended Practices for Broadband LAN. Provides recommendations for the physical, electrical, and...
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Currently there are two computers in the office, but the company is willing to purchase more if needed. Incorrect answers and explanations: A, C, and D. Answer A is incorrect because at least two computers are necessary to create a network. If there is only one computer, it would be a standalone workstation and not connected to a network of...
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Which of the following is a possible point of failure for this topology, which could bring down the entire network?. Computers are cabled to this hub, making it a centralized point where the network is connected. If the hub fails, the network would go down.. Incorrect answers and explanations: A, B, and C. Answer A is incorrect because if a...
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Layer 5 switch. Answer A is incorrect because an external transceiver is an external device, and thereby isn’t built onto the NIC. Answers C and D are incorrect because neither of these are types of transceivers. Layer 2 switch B. Layer 3 switch C. Layer 4 switch D. Answer A is incorrect because Layer 2 switches work at the data...
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Which of the following features will you want on the switches that will be used on this network so that looping doesn’t occur?. Incorrect answers and explanations: A is incorrect because UDP is the User Datagram Protocol, which is a simple transport protocol and isn’t used to prevent looping on a network. B is incorrect because TCP is the Transmission...
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All of the above.. ChApTEr 6: ThE oSI ModEl ANd NETworKING proToColS. Which OSI model layer is responsible for frame sequencing?. Therefore, answer C is correct.. You are a network technician assigned to install a new network 2.. At which layer of the OSI model does a standard hub operate?. Hubs operate at the physical layer of the OSI model....
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Incorrect answers and explanations: A, B, and D. Answer A is incorrect;. Answer B is incorrect. Answer C is incorrect. What might be the potential cause of the issue?. The DHCP server is not running.. Answer A is incor- rect. Answer D is incorrect. DHCP is just an enhanced version of the original BootP protocol.. As the primary lead on...
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Availability under CIA has not been assured because the resource is not available to the user after they have authenticated.. Incorrect answers and explanations: Answer A is incorrect because con- fidentiality has not been breached in this scenario. Answer B is incorrect because integrity has not been breached in this scenario. Although the resource may not be available, that does...
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Answer D is incorrect because a server rack schematic would contain details about wires in a particular rack, but typically not details on how to create the actual cables.. He asks you over the phone to develop a calculated plan of action to guide decisions and achieve sound outcomes that provide guidelines that the installation contractors will use on how...
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You are working at the local county hospital, which of the following regulations should your organization need to be aware of?. All of the above. All of the above is correct. Incorrect answers and explanations: A, B, C. Incorrect answers and explanations: B, C, and D. Which of the following commands is a Linux-based command used 1.. Correct answers and...
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have configured the NIC to have the same static IP address that was set on the old NIC. First thing Monday morning you receive a network alert that there is large number of broadcasts taking place on the network segment where this server resides. Correct answers and explanations: A. Answer A is correct because by replacing the NIC in the...
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Correct answers and explanations: A. Answer A is correct, because subnet C has a network address of and the address of is an appropriate client IP address for this subnet.. Incorrect answers and explanations: B, C, and D. Answer B is incorrect, because is an appropriate IP address for this subnet, but it is already configured on the router as...
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History And Scope Of The Internet 6 The Internet Architecture Board 8 The IAB Reorganization 9 The Internet Society 1 1. Internet Request For Comments 11 Internet Protocols And Standardization Future Growth And Technology 12 Organization Of The Text 13 Summary 14. Application-Level Interconnection 53 Network-Level Interconnection 54 Properties Of The Internet 55 Internet Architecture 56. Weaknesses In Internet Addressing...