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xz_007 [3.2K]
4 years ago
15

When discussing the data-modeling building blocks, anything (a person, a place, a thing, or an event) about which data are to be

collected and stored is referred to as a(n) __________.
Computers and Technology
1 answer:
Fynjy0 [20]4 years ago
7 0

Answer:

When discussing the data-modeling building blocks, anything (a person, a place, a thing, or an event) about which data are to be collected and stored is referred to as an entity.

Explanation:

Entities, attributes, and relationships are the basic building blocks of all data models .

An entity is therefore described as anything, such as a person, place, thing, or event, about which data are to be collected and stored. They may be physical objects such as customers or products.

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) how many bits are used for host number on the child network (subnet) , b) how many usable addresses can exist on this child ne
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Answer:

Machine’s IP=126.127.85.170, Machine’s Netmask=/27, Parent’s Netmask=255.255.240.0 .

a) Machine's Netmask = /27 : therefore no. of remaining bits for hosts =32-27 = 5 bits.

b) No. of usable addresses in the child network = 25 -2 = 32-2 =30 [Since first(network ID of the machine) and last ip (broadcast address of the machine ) addresses are not used ]

c) first usable address is on this child network (subnet) =

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01111110. 01111111.01010101.10101010 (IP)

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01111110. 01111111. 01010101.10100000 (Network ID )

first usable address is on this child network (subnet) :   01111110. 01111111. 01010101.10100001

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d) what the last usable address is on this child network (subnet) :  01111110. 01111111. 01010101.10111110

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In the directed broadcast address , all the host bits are 1. Therefore, broadcast address :

01111110. 01111111. 01010101.10111111 (126.127.85.191)

f) what the child network's (subnet's) network number is : Network ID has already been calcuulated in part c .

01111110. 01111111. 01010101.10100000 (126.127.85.160)

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