40 Questions
What is the primary purpose of HTTPS?
To encrypt data during transmission
What is the name of the protocol used to send email?
SMTP
What type of encryption is used to secure data in HTTPS?
SSL and TLS
What is the role of a mail server in email communication?
To communicate with another mail server to transport messages
How do email clients communicate with each other?
Through a mail server
What is the purpose of the store-and-forward method in email?
To store email messages in databases on mail servers
What is the primary difference between HTTP and HTTPS?
HTTPS uses encryption, while HTTP does not
What is the role of an email client in email communication?
To communicate with a mail server to send and receive email
What is the primary function of an email client in a client-server network?
To issue requests to the email server for unread mail
What is the term for data transfer from a client to a server?
Upload
In a peer-to-peer network, what is the function of a peer device?
To function as both a server and a client
What is a characteristic of peer-to-peer networks?
Resources are shared without a dedicated server
In a peer-to-peer exchange, how are the roles of client and server determined?
On a per-request basis
What is the relationship between devices in a peer-to-peer network?
Both devices are equal in the communication process
What is the difference between a client-server network and a peer-to-peer network?
A client-server network has a dedicated server, while a peer-to-peer network does not
What is a characteristic of application layer protocols?
They describe the format of requests and responses between clients and servers
What is the primary purpose of the POP server?
To passively listen on TCP port 110 for client connection requests
What happens to email messages on the server when using POP?
They are deleted immediately after download
What is the primary difference between POP and IMAP?
The way email messages are stored on the server
Why is POP not recommended for small businesses?
Because it does not store messages, making it difficult to have a centralized backup solution
What happens when a user decides to delete a message in IMAP?
The server synchronizes the action and deletes the message from the server
What is the purpose of the greeting sent by the POP server?
To signal the start of the POP session
What is the main advantage of using IMAP over POP?
IMAP allows for a centralized location where email messages are kept
What is the sequence of events when a client wants to use the POP service?
The client sends a request, then the POP server establishes a TCP connection, and then sends a greeting
What happens when a DHCP-configured device boots up or connects to a network?
It broadcasts a DHCP discover message to identify available servers.
What information does a DHCP offer message contain?
The IPv4 address, subnet mask, DNS server, and default gateway.
What happens if a client receives multiple DHCP offers?
The client chooses one offer and sends a DHCP request message.
What is the purpose of a DHCP negative acknowledgment message?
To indicate that the offered lease is no longer valid.
What ensures that IP addresses are unique in a network?
The DHCP server ensures IP address uniqueness.
What is the similar set of messages in DHCPv6?
SOLICIT, ADVERTISE, INFORMATION REQUEST, and REPLY.
What is the purpose of a DHCP request message?
To choose a lease offer from a specific server.
What happens when a client sends a DHCP request message?
The server sends a DHCP acknowledgment message to finalize the lease.
What is the primary purpose of the File Transfer Protocol?
To allow for data transfers between a client and a server
On which TCP port does the FTP client establish the control connection?
TCP port 21
In what direction can data transfer occur using FTP?
In either direction, depending on the command
What is the purpose of the Server Message Block protocol?
To manage network resources, such as printers and serial ports
What type of connection is established every time there is data to be transferred using FTP?
Data connection
Which of the following is NOT a characteristic of the FTP protocol?
Uses TCP port 80 for data transfer
What is the primary function of an FTP client?
To push and pull data from an FTP server
Which protocol is used for request-response file sharing?
Server Message Block (SMB)
Learn about the basics of client-server networks, including application layer protocols, email services, and data transfer between clients and servers.
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