1. (a) A block of 8192 addresses is available for allocation to hosts, starting with 192.24.0.0.The following organizations request addresses, Tithe an Oireachtais, An Post, and RaidióTeilifís Éireann.Tithe an Oireachtais need(s) 2048 addresses and is assigned 192.24.0.0/21. An Postneeds 4096 addresses and is assigned 192.24.16.0 and the subnet mask 255.255.240.0.Finally, Raidió Teilifís Éireann asks for 1024 addresses and is assigned 192.24.8.0/22.(i) How many addresses are left after this allocation has been performed?(ii) If any addresses are available, give the network prefix for the available network.(iii) Give the first valid address and the last valid address of the available address space.[10 Marks]

The given problem deals with IPv4 address allocation and subnetting. To solve it, we need to…

Answered: 1. (a) A block of 8192 addresses is…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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) s ®%74 I, 10.100.100.1is a valid host address * QO Yes O No -4 0 G 9:09 Which is not true about Class C addresses (select more than answer) * the first byte between 192 - 224 the number of hosts is less than subnets Many addresses are wasted the address space is 53687191 address the first byte starts with 110 Map the following addresses to its right class * 192.168.6.7 128.0.10.10 127.0.100.100 O O 'O 190.0.255.255 is a Class B special address * QO True Q False Back Next Never submit passwords through Google Forms, O O © O @) @ This form was created Inside of Alnukhba University College. Report Abuse Google F
Write a C/C++ code to Implement the following scenario: An ISP is granted a block of addresses starting with 190.100.0.0/16 (65,536 addresses). The ISP needs to distribute these addresses to three groups of customers as follows: a. The first group has 64 customers; each needs 256 addresses. b. The second group has 128 customers; each needs 128 addresses. c. The third group has 128 customers; each needs 64 addresses. Design and Implement the sub blocks and find out how many addresses are still available after these allocations.
1. Assume that P2 issues the logical address 0xD98A. What is the logical page number contained in the given logical address, in hexadecimal? Answer is: 0x 6 But I do not knot well how to calculate
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52- A network for a local office requires 4 LAN subnets as follows: · Subnet A - North Office with 31 hosts; · Subnet B - East Office with 15 hosts; and · Subnet C - South Office with 7 hosts. · Subnet D – West Office with 4 hosts. Given the IP Address 192.168.15.0 /24 and above described network requirements: 1. Design an optimal address scheme using Variable Length Subnet Mask (VLSM) method; What will be the subnet mask of Subnet A? Select one: A. 255.255.255.192 B. 255.255.128.255 C. 255.255.255.128 D. 255.255.192.192 E. 255.255.192.0
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7.1 In IEEE 802.11, open system authentication is accomplished via a simple two-way communication. The client requests authentication, which includes the station ID, which is provided by the server (typically the MAC address). A successful or unsuccessful authentication response from the AP/router is received in response to the previous request from the client. For instance, if the client's MAC address has been expressly omitted from the AP/router setup, a failure may occur.a. What are the advantages of using this kind of authentication scheme?b. What are the security flaws in this authentication method and how may they be mitigated?
9.18 A certain computer provides its users with a virtual-memory space of 232 bytes. The computer has 218 bytes of physical memory. The virtual memory is implemented by paging, and the page size is 4096 bytes. How many pages are possible in the system? How many frames can it have?
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