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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

vovikov84 [41]

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) =

First, find out the network id of machine can be found out by doing bitwise AND machine's IP and Machine's subnet mask :

01111110. 01111111.01010101.10101010 (IP)

11111111. 11111111 .11111111 .11100000 (Subnet Mask)

01111110. 01111111. 01010101.10100000 (Network ID )

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

: 126.127.85.161

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

: 126.127.85.190

e) what the child network’s (subnet's) broadcast address is :

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)

6 0

2 years ago

A mysql prompt has been opened for you. Using the college database, complete the following tasks (use either a single-line or a

Pavlova-9 [17]

Answer:

See Explanation

Explanation:

Given

See attachment 1 for proper table definition

To answer this question, one of the basic sql commands (the "create" command) will be used to create the required table, followed by the fields of the table.

<em>I could not submit my answer directly. So, I added two additional attachments which represent the answer section and the explanation section, respectively.</em>

3 0

2 years ago

Molly, a technician, has been tasked with researching an emulator for the software developers to test cross-platform application

Tresset [83]

Answer:

Option (C) and (D) are the correct answers.

Explanation:

Because Hypervisor is an application or software that provides you a platform by which you can operate another application or software which is not supported to the current operating system just like, you can operate the mobile applications on your system with the help of Hypervisor software. In other words, it is an emulator that provides you the platform to operate different applications on your system.

8 0

2 years ago

Which of the following OSI layers is responsible for the segmentation, multiplexing, flow control and host-to-host communication

Lisa [10]

Answer:

Transport Layer

Explanation:

The transport layer which is responsible for end-to-end communication over a network. Transport Layer breaks the data, allocated by Application layer in smaller units called segments. It is used to number every byte in the segment. It is also responsible for error correction and provides reliability to the user. It allows the host to send and receive error corrected data, messages or packets over a network and ensures that data should be received in the same sequence in which it was sent. It also enables multiplexing and flow control.

7 0

2 years ago

100 POINTS!!!!!!

Veronika [31]

Answer:

The fundamental limitation of symmetric (secret key) encryption is ... how do two parties (we may as well assume they are Alice and Bob) agree on a key? In order for Alice and Bob to communicate securely they need to agree on a secret key. In order to agree on a secret key, they need to be able to communicate securely. In terms of the pillars of IA, To provide CONFIDENTIALITY, a secret key must first be shared. But to initially share the key, you must already have CONFIDENTIALITY. It's a whole chicken-and-egg problem.

This problem is especially common in the digital age. We constantly end up at websites with whom we decide we want to communicate securely (like online stores) but with whom we there is not really an option to communicate "offline" to agree on some kind of secret key. In fact, it's usually all done automatically browser-to-server, and for the browser and server there's not even a concept of "offline" — they only exist online. We need to be able to establish secure communications over an insecure channel. Symmetric (secret key) encryption can't do this for us.

Asymmetric (Public-key) Encryption

Yet one more reason I'm barred from speaking at crypto conferences.

xkcd.com/177/In asymmetric (public key) cryptography, both communicating parties (i.e. both Alice and Bob) have two keys of their own — just to be clear, that's four keys total. Each party has their own public key, which they share with the world, and their own private key which they ... well, which they keep private, of course but, more than that, which they keep as a closely guarded secret. The magic of public key cryptography is that a message encrypted with the public key can only be decrypted with the private key. Alice will encrypt her message with Bob's public key, and even though Eve knows she used Bob's public key, and even though Eve knows Bob's public key herself, she is unable to decrypt the message. Only Bob, using his secret key, can decrypt the message ... assuming he's kept it secret, of course.

Explanation:

3 0

1 year ago