.6 The local area network shown in Figure 7‐21 (Prescribed material) has two hubs (X and Y) interconnecting the workstations and servers. Replace hub Y with a switch and answer the below question. Q.1.6.1 What workstations and servers will receive a copy of a packet if the following workstations/ servers transmit a message: • Workstation 1 sends a message to workstation 3: • Workstation 2 sends a message to Server 1: • Server 1 sends a message to workstation 3

.6 The local area network shown in Figure 7‐21 (Prescribed material) has two hubs (X and Y) interconnecting the workstations and servers. Replace hub Y with a switch and answer the below question. Q.1.6.1 What workstations and servers will receive a copy of a packet if the following workstations/ servers transmit a message: • Workstation 1 sends a message to workstation 3: • Workstation 2 sends a message to Server 1: • Server 1 sends a message to workstation 3

Principles of Information Security (MindTap Course List)

6th Edition

ISBN:9781337102063

Author:Michael E. Whitman, Herbert J. Mattord

Publisher:Michael E. Whitman, Herbert J. Mattord

Chapter6: Security Technology: Access Controls, Firewalls, And Vpns

Section: Chapter Questions

Problem 2RQ

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A router with IP address 125.45.23.12 and Ethernet physical address 23:45:AB:4F:67:CD has received a packet for a host destination with IP address 125.11.78.10 and Ethernet phys-ical address AA:BB:A2:4F:67:CD. (I) Show the entries (a, b, c, d, e in Figure 1(a)) in the ARP request packet sent by therouter. Assume no subnetting. (II) The packet made in part (I) is encapsulated in a data link frame. Fill in the fields fand g in Figure 1(a). (III) Show the entries (h, i, j, k, l in Figure 1(b)) in the ARP reply packet sent in responseto part (I). (IV) The packet in part (III) is encapsulated in a data link frame. Fill in the fields m andn.
2. The following illustration shows a transmission from Host A to Host B using Network Address Translation (NAT). Host A is located inside a Local Area Network (LAN) with an IP address of 192.168.1.2. The LAN is connected to the Wide Area Network (WAN), i.e. the Internet, through a router R1 that conducts NAT. R1 has two interfaces with an internal LAN IP address (192.168.1.1) and and external WAN IP address (127.45.10.35). Host B is located outside the LAN and is a well-known server, e.g., Google's server. Host B has an IP address of 130.160.23.45. Port numbers for the application components running at both hosts are provided in the figure. For a single message M1 being sent from Host A to Host B, please fill in the blanks in the illustration below with the source IP address and Port number at Host A and at the Router R1. Any information not provided may be assumed, however, please state your assumption clearly. Host A Local Area Network (LAN) IP: 192.168.1.2 Port: 5252 Source IP…
NAT translation table LAN side addr WAN side addr 135.122.200.215 10.0.1.15 10,0.1.13 address 135.122.200.215 S: 10,0,1.27 2 D: 1 D: S: S: D: S: 10,0.1.15 D: 135.122,200,215 10.०.1.22
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A home network consists of an ISP Router, 2 home computers, 1 smart television and 1 video game system. Assume that DHCP/NAT is configured on the ISP router for the internal IP numbers (set to 192.168.1.0/24). Submit this diagram with all devices in the network. Use Diagramming tools to create network diagrams for the following scenarios. For this exercise, start with 192.168.1.1 for the router and assign other ip addresses as needed
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4. The original HTTP protocol used TCP/IP as the underlying protocol. For each page, graphic, or applet, a separate TCP connection was constructed, used, and terminated. This caused several problems: one referred to as the elephant and mice problem and two aspects of connection overhead. Describe both problems. Why were separate connections used? Would UDP rather than TCP be a good alternative? What solution would you propose to these problems to improve HTTP performance?
19. ARP is used for: O packet path determination O finding of a mapping IPV6 → MAC address O finding of a mapping IPV4 → MAC address O finding of a mapping IPV4 → TCP address
Computer Networks - Internet Architecture & Application Layer Please answer the question Someone suggested to use a local file called hosts.txt on each machine instead of DNS. Discuss the advantages (at least 2) and disadvantages (at least 2) of such suggestion. What is ‘saw-tooth’ behavior in TCP, and what is causing it?
Assume that there are four routers (R1, R2, R3, and R4) and four hosts (H1, H2, H3, and H4) in a network (N1). H1 sends an email to an instructor H3 at SEU.EDU.SA. (192.168.1.1) and the router path is R1, R3, R2, and R4, but the H3 host find a parameter problem and dropped the packet. Explain how ICMP protocol can be used as a debugging tool and draw a diagram to illustrates the traceroute process for this scenario? PART 2 || Characteristics The Transport-layer Protocol It is a simple connectionless protocol with neither flow nor error control. The size of the send window must be less than 2m; the size of the receive window is always 1. Each time a single packet is lost or corrupted, the sender resends all outstanding packets, even though some of these packets may have been received safe and sound but out of order. Both the sender and the receiver use a sliding window of size 1. The sender sends one packet at a time and waits for an acknowledgment…