39. security protocols so that data can be sent peer-to-peer without the use Assume that the list of numbers nums has more than 10 elements. The program below is intended to compute and display the sum of the first 10 elements of nums. Line 1: i Line 2: sum Line 3: REPEAT UNTIL (i > 10) Line 4: { Line 5: Line 6: Line 7: } Line 8: DISPLAY (sum) 1 +0 ii + 1 sum sum + nums [i] Which change, if any, is needed for the program to work as intended? (A) Lines 1 and 2 should be interchanged. (B) Line 3 should be changed to REPEAT UNTIL (i ≥ 10). (C) Lines 5 and 6 should be interchanged. (D) No change is needed; the program works correctly. is used in protecting data?

39. security protocols so that data can be sent peer-to-peer without the use Assume that the list of numbers nums has more than 10 elements. The program below is intended to compute and display the sum of the first 10 elements of nums. Line 1: i Line 2: sum Line 3: REPEAT UNTIL (i > 10) Line 4: { Line 5: Line 6: Line 7: } Line 8: DISPLAY (sum) 1 +0 ii + 1 sum sum + nums [i] Which change, if any, is needed for the program to work as intended? (A) Lines 1 and 2 should be interchanged. (B) Line 3 should be changed to REPEAT UNTIL (i ≥ 10). (C) Lines 5 and 6 should be interchanged. (D) No change is needed; the program works correctly. is used in protecting data?

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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6.) Every computer or internet-connected device has an IP address. (a) Originally IP addresses consisted of 32 binary digits, known as bits, each of which can be 0 or 1. How many such IP addresses are possible? (b) As all the available IP addresses were getting used up, a new system was devised with 128 bits. How many IP addresses are possible under this new system?
58- 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 network address of Subnet D? Select one: A. 192.168.15.232 B. 192.168.15.191 C. 192.168.15.112 D. 192.168.15.240
42- An organization currently requires 40 hosts for its sales department. Given the IP Address 194.12.1.0 /24, design an optimal address scheme usingTradition Subnetting method, which will enable the connection of the sales department’s 40 hosts in one subnet and uses the remaining subnets for other departments’ hosts in the future. How many subnets have been created? Select one: A. 4 B. 6 C. 64 D. 16
iii. The IPv6 is an enhancement on the previous version - IPv4, capturing the reduction of the size of the IP datagram of IPv4 to a streamlined 60 bytes size of IPv6. It is also suppose to enhance the economical use of the available bandwidth. Explain how these claims have been justified in the fields of the IPv6 and how it translates to the economical use of bandwidth.
56- 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 C? Select one: A. 255.255.128.255 B. 255.255.192.0 C. 255.255.255.240 D. 255.255.255.192 E. 255.255.255.128
Question 5. Write a note on the following a. Compare the header format of IPv4 and IPv6. How tunneling is used to transition fromIPv4 to IPv6?b. Use Dijkstra’s algorithm on the following network to find shortest paths. c. Data 01110001101010100 is received where receiver uses odd parity. Is the data corrupted.Justify your answerd. What are the three main classes of MAC protocols? Explain each a one or two linese. Give steps of ARP mapping from IP to MAC address.
need explaination a) For example, Computer A can communicate with computer C by using TELNET. At the same time, computer A communicates with computer B by using the File Transfer Protocol (FTP). For these processes to receive data simultaneously, we need a method to label the different processes. Could you explain that method? b) IP addresses can be given to devices statically or dynamically, Could you provide an example? Why IPv4 facing crisis? And how to get rid of these IP crisis?
Subnetting IP Networks - Given the address block 192.168.30.0/24, create an IP addressing scheme that would allow for 2 subnets with 126 host IP addresses per subnet. Compute for the first two subnets only
44- An organization currently requires 40 hosts for its sales department. Given the IP Address 194.12.1.0 /24, design an optimal address scheme usingTradition Subnetting method, which will enable the connection of the sales department’s 40 hosts in one subnet and uses the remaining subnets for other departments’ hosts in the future. What will be the total number of usable (assignable) addresses per subnet? Select one: A. 62 B. 65 C. 63 D. 64
60- 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 range of usable (assignable) host addresses in Subnet D? Select one: A. 192.168.15.224 to 192.168.15.255 B. 192.168.15.113 to 192.168.15.118 C. 192.168.15.192 to 192.168.15.254 D. 192.168.15.193 to 192.168.15.240 E. 192.168.15.192 to 192.168.15.239
(b) For example, Computer A can communicate with computer C by using TELNET. At the same time, computer A communicates with computer B by using the File Transfer Protocol (FTP). For these processes to receive data simultaneously, we need a method to label the different processes. Could you explain that method? (c) IP addresses can be given to devices statically or dynamically, Could you provide an example? Why IPv4 facing crisis? And how to get rid of these IP crisis
A network administrator has been asked to create subnets from the given block of IP address 201.201.201.201 /27 Write down all the subnets with the Network address and broadcast address of each Which subnet the given IP address belong to, write down the IP address of the first and the last valid host How OSI layers play their role in the communication between two computers. Discuss. Correctly identify the layers for the items mentioned below. Switch, Router, Hub, TCP, Browser, IP Address, Frame, UTP cable.