- Study guides, Class notes & Summaries

What does the IEEE 802.3af standard define? A. High-speed fiber optic transmissions B. Gigabit Ethernet over coax C. Power over Ethernet (PoE) using Cat 3 cables D. Supplying power over Ethernet using Cat 5 or better cables Correct answer: D Rationale: IEEE 802.3af defines PoE, delivering up to 15.4 watts of power using Cat 5 or better Ethernet cables. What improvement does IEEE 802.3at (PoE+) provide over 802.3af? A. Faster data transmission B. Increased power delivery up to...

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24 pages

Written in 2024/2025

Grade A+

lisarhodes411

A junior administrator is having issues connecting to a router's console port using a TIA/EIA 568B standard cable and a USB serial to RJ-45 adapter. What is the issue? A. The terminal settings are incorrect B. The cable must be a crossover cable C. The cable must be a rollover cable D. The adapter is incompatible Rationale: A rollover cable is required to connect a PC to a router’s console port. What tool in a fiber termination kit is used for cutting a clean slice through fi...

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21 pages

Written in 2024/2025

Grade A+

lisarhodes411

Which layer realizes a reliable or unreliable datastream between two internet hosts? A. Application layer B. Data Link layer C. Transport layer D. Network layer Correct Answer: C. Transport layer Rationale: The Transport layer (TCP/UDP) handles the reliable or unreliable data transfer between hosts. Which layer is responsible for realizing a multitude of internet applications? A. Physical layer B. Application layer C. Network layer D. Data Link layer Correct Answer: B...

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26 pages

Written in 2024/2025

Grade A+

lisarhodes411

What are the two most important network-layer functions in a datagram network? What are the three most important network-layer functions in a virtual-circuit network? A. Routing, Encryption, Authentication B. Path determination, Switching, and Call setup (for VC network) C. Framing, Transmission, Compression D. IP Addressing, ARP Resolution, Port Mapping Correct Answer: B Rationale: In datagram networks, the key functions are path determination and switching. Virtual-circuit networks...

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82 pages

Written in 2024/2025

Grade A+

lisarhodes411

Computer Networks - Test 1 Questions and Answers Fully Solved Latest Version 1.3 According to the text, is it possible to develop Internet applications without understanding the architecture of the Internet and the technologies? Support your answer. - Answers Answer: Yes, possible to write code that communicates over a network, without understanding the hardware and software technologies that are used to transfer data from one application to another. However, knowledge of the underlying networ...

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8 pages

Written in 2024/2025

Grade A+

TutorJosh

1. Which of the following is the best practice to implement when securing log files? A. Delete logs daily B. Encrypt logs with user passwords C. Copy the logs to a remote log server D. Store logs on the same server they’re generated on Correct Answer: C. Copy the logs to a remote log server Rationale: This prevents tampering by ensuring logs are kept on a separate, secure server. 2. Which of the following should be done if an audit recording fails? A. Ignore the failure...

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25 pages

Written in 2024/2025

Grade A+

lisarhodes411

Computer Networks Test 1 with 100% Correct Answers | Verified |Latest version 2025

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11 pages

Written in 2024/2025

Grade A+

Reginasmith

Computer Networks Chapter 6 Exam with 100% Correct Answers | Verified |Latest version 2025

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3 pages

Written in 2024/2025

Grade A+

Reginasmith

Computer Network Exam with 100% Correct Answers | Verified |Latest version 2025

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6 pages

Written in 2024/2025

Grade A+

Reginasmith

Computer Networks Exam Study Guide Questions And Answers Verified 100% Correct Give your ANSWER as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). - ANSWER1 2 3 5 4 7 6 4.2-7c.Packet scheduling. Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose ea...

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58 pages

Written in 2024/2025

Grade A+

TopGradeGuru

Computer Networks Final Exam A network device is capable of simultaneously transmitting and receiving data. Which mode is that device operating in? - CORRECT ANSWER-Full-Duplex A switch receives a frame with a destination MAC address that is unknown. How will the switch handle the frame? - CORRECT ANSWER-It will flood the frame out all ports, except the port is was received on What role does the frame check sequence perform in an Ethernet frame? - CORRECT ANSWER-Error detection A MAC...

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4 pages

Written in 2024/2025

Grade A+

Proffscholar2

Computer networks exam 2 2025 QUESTIONS AND CORRECT ANSWERS ALREADY GRADED PASS GRADE A+ Computer networks exam 2 2025 QUESTIONS AND CORRECT ANSWERS ALREADY GRADED PASS GRADE A+ Computer networks exam 2 2025 QUESTIONS AND CORRECT ANSWERS ALREADY GRADED PASS GRADE A+ Computer networks exam 2 2025 QUESTIONS AND CORRECT ANSWERS ALREADY GRADED PASS GRADE A+ Computer networks exam 2 2025 QUESTIONS AND CORRECT ANSWERS ALREADY GRADED PASS GRADE A+ Computer networks exam 2 2025 QUE...

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5 pages

Written in 2024/2025

Grade A+

TUTOROUINE

This document contains a comprehensive set of final exam practice questions and correct answers covering core topics in computer networks. It includes questions on network devices, MAC addresses, subnetting, LAN and WAN technologies, routing protocols, Ethernet, wireless VLANs, and circuit vs. packet switching. Ideal for revision before exams, the content touches on theoretical and practical concepts, making it suitable for test preparation.

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4 pages

Written in 2024/2025

Grade A+

Proffscholar4

◉ What are the fields of DNS messages? Answer: Identification, flags, questions, answers, authority, aditional info ◉ What is the P2P Application? Answer: BitTorrent ◉ What does the transport layer provide? Answer: Logical communication between app processes running on different hosts, breaks up and reassembles packets ◉ What uses TCP? Answer: HTTP, documents ◉ What uses UDP? Answer: DNS, streaming ◉ What services are unavailable between TCP and UDP? Answer: Delay and bandwi...

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21 pages

Written in 2024/2025

Grade A+

TopGradeInsider

◉ Elastic Applications. Answer: Applications that can use as much or as little throughput as is available ◉ TCP Connection. Answer: Exists between the sockets of two processes after the handshaking phase ◉ Secure Sockets Layer. Answer: Provides critical process-to-process security services such as encryption, data integrity, and end-point authentication to TCP connections ◉ Application-Layer Protocol. Answer: Defines how an application's processes pass messages between differe...

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23 pages

Written in 2024/2025

Grade A+

TopGradeInsider

◉ What is a subnet? Answer: device interfaces with the same subnet part of the IP address. Can physically reach each other without intervening router ◉ How do you determine the subnet? Answer: detach each interface from its host or router, creating islands of isolated networks (each one is called a subnet) ◉ Dijkstra's Algorithm Answer: Link costs known to all nodes, computes least cost paths from one source node, iterative. c(x,y) = link cost from node x to y D(v) = current val...

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8 pages

Written in 2024/2025

Grade A+

TopGradeInsider

◉ Suppose you would like to urgently deliver 40 terabytes data from Boston to Los Angeles. You have available a 100 Mbps dedicated link for data transfer. Would you prefer to transmit the data via this link or instead use FedEx overnight delivery? Answer: 40(10^12) x 8 = 320(10^12) bits, 320(10^12)/100(10^6) = 3200000 seconds = 37.037 days. Fedex can deliver it in one day. ◉ The data link layer is responsible for sending data into packets. Answer: False ◉ The network layer encapsul...

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33 pages

Written in 2024/2025

Grade A+

TopGradeInsider

◉ Broadcast Storms + How to Prevent. Answer: Broadcast storms can occur when there is a loop in the network topology, and packets keep getting forwarded. Prevent by creating a fowarding tree (spanning tree). ◉ Spanning Tree (definition). Answer: A loop-free topology that contains every node. Instead of flooding, a switch forwards packets along the spanning tree. ◉ Spanning Tree (construction overview). Answer: 1. Elect a root (typically switch with smallest ID) 2. At each switch, e...

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26 pages

Written in 2024/2025

Grade A+

TopGradeInsider

◉ Computational Complexity of LS Algorithm Answer: O(n^2) What is the computation complexity of this algorithm? That is, given n nodes (not counting the source), how much computation must be done in the worst case to find the least cost paths from the source to all destinations? In the first iteration, we need to search through all n nodes to determine the node, w, not in N that has the minimum cost. In the second iteration, we need to check n−1 nodes to determine the minimum cost; in ...

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35 pages

Written in 2024/2025

Grade A+

TopGradeInsider

CS6250 EXAM PACKAGE DEAL QUESTIONS AND VERIFIED DETAILED ANSWERS | 100% GUARANTEED PASS | ALREADY GRADED A+

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4 items

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