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Nadya [2.5K]
3 years ago
15

What are considered to be among the earliest adhesives?

Computers and Technology
1 answer:
miss Akunina [59]3 years ago
8 0
If you mean glue, then heres a list of what I can remember. 
1.<span>Epoxy resins
2.</span><span>.Acrylic resin.
3. polyester resin</span>
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A company is executing a strategy to encrypt and sign all proprietary data in transit. The company recently deployed PKI service
Softa [21]

Answer:

A. S/MIME

B. TLS

C. Kerberos

Explanation:

PKI : Public Key Infrastructure is a technique which will allow services or applications to communicate securely across the unsecured network or internet.

PKI mainly consist of CA or Certificate Authority who can issue digital certificates or they are also known as trusted CA.  exmaples are godaddy, digicert, verizone, symmantec, etc.. and RA also known as Registration Authorities and they verify if the requested certificates can be stored at CA. Keys will be stored in the central directory.It will also consists of certificate management system and the policies governing PKI.

S/MIME : Secure/Multipurpose Internet Mail Extensions which use assymentric cryptography and sign the MIME data.   S/MIME will provide services like  Authentication, Encryption , Integrity, Privacy and Non repudiation for messaging applications

SMIME uses certificates which can be self signed or CA certified. It specifies MIME type as  application/pkcs7-mime  while transmitting the data.

TLS : Transport Layer Security. the earlier versions used to be known as SSL ( Secure Socket Layer) SSLv3 got depreciated and TLSv1.2/1.3 are popularly used to provide encryption, authentication, Integrity and Hashing for client to server side communication.

Most of the applications communicate securely using TLS.  They will establish secure TCP connection using SSL Handshake. During the Handshake they will exchange supported versions, ciphersuites and certificates. Applications which uses TLS always uses CA certificates and Inhouse applications can communicate using self signed certificate or even with CA certificates.

HTTPS which is also known as HTTP over SSL is widely used for almost all the web services to communicate securely across the internet.

Kerberos : It is a protocol used to prove the identity for two nodes which are communicating with each other. Kerberos uses both symmetric key cryptography and assymetric key cryptography. However, symmetric key cryptography is used widely and public key cryptography is used optionally.

Authentication server which is also known as AS is used to authenticate the requesting client.  It further forwards the user credentials to key distribution center. KDC further issues to TGT ( ticket granting ticket) and it uses TGS's secret key to encrypt. User will receive a encrypted output.  

When a User Login then The client authenticates itself to the Authentication Server (AS) which forwards the username to a key distribution center (KDC). The KDC issues a ticket-granting ticket (TGT), which is time stamped and encrypts it using the ticket-granting service's (TGS) secret key and returns the encrypted result to the user's workstation. Sessions will be renewed and managed by users session manager.

4 0
3 years ago
When a switch is closed, completing an lr series circuit, the time needed for the current to reach one half its maximum value is
uysha [10]
The answer is <span>0.693 .  </span><span>When a switch is closed, completing an LR series circuit, the time needed for the current to reach one half its maximum value is 0.693   

</span>e^(-t/T) = 0.5 
<span>-t/T = ln(0.5) = -0.693 </span>
7 0
3 years ago
8. This machine is used for high speed, high volume printing l. Can print about 1000 papers at one point in time.
seropon [69]

Answer:

Risographs can produce up to typically 150 pages per minute. So I'm guessing its c.

Explanation:

5 0
3 years ago
How is technology used in the voting process?
Semmy [17]
Each person has a electronic chip-enabled ID card, which lets them vote on the internet. The ID card is put into the card reader that is connected the computer. :)
7 0
2 years ago
A wiki is best defined as:
Basile [38]

Answer:

a reverse chronological journaling site. a user-collaborated content site, typically text in nature

Explanation:

It is the website that is based on knowledge. It is the text based site that is also called structure content.

The most common example of Wiki is Wikipedia.

8 0
3 years ago
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