Information Technology Essentials - Lecture 10

Switches are devices responsible for directing packets in a network.

A Database Server manages and provides access to databases.

An Application Server manages and provides access to applications.

<p>A Mail Server manages and transfers emails.</p> Signup and view all the answers

<p>A DNS Server resolves domain names to IP addresses.</p> Signup and view all the answers

<p>A DHCP Server assigns and manages IP addresses in a network.</p> Signup and view all the answers

<p>A Print Server manages a set of printers.</p> Signup and view all the answers

<p>Servers represent shops in a city that provide users with organized information.</p> Signup and view all the answers

<p>A Mail Server manages and transfers emails.</p> Signup and view all the answers

<p>A DHCP Server assigns and manages IP addresses within a network.</p> Signup and view all the answers

<p>Routers direct packets to their correct destination, similar to road signs directing traffic.</p> Signup and view all the answers

<p>A Database Server provides access to a database through a Database Management System (DBMS).</p> Signup and view all the answers

<p>An example SQL query is <code>SELECT * FROM student WHERE name='Abdeallah';</code>.</p> Signup and view all the answers

<p>Switches are responsible for directing packets to the appropriate devices within a local network.</p> Signup and view all the answers

<p>Data in a relational database is structured in a tabular format.</p> Signup and view all the answers

<p>GSM (2G), GPRS (2.5G), EDGE (2.75G), UMTS (3G), and LTE (4G).</p> Signup and view all the answers

<p>To create wireless Local Area Networks (LANs).</p> Signup and view all the answers

<p>It connects all public and private networks together using protocols like IP and TCP.</p> Signup and view all the answers

<p>To create wireless Personal Area Networks (PANs).</p> Signup and view all the answers

<p>IMAP is used to retrieve emails from a computer while keeping copies on the server.</p> Signup and view all the answers

<p>It is used for wireless authentication purposes.</p> Signup and view all the answers

<p>A computer network is a set of computers and networking devices connected together for communication.</p> Signup and view all the answers

<p>TCP establishes end-to-end connections and ensures reliable communication between applications on different computers.</p> Signup and view all the answers

<p>Protocols supported by IP include HTTP, HTTPS, DNS, Telnet, SSH, FTP, and POP3.</p> Signup and view all the answers

<p>IPv4 addresses uniquely identify a device on a network, ensuring that packets are delivered to the correct destination.</p> Signup and view all the answers

<p>The operating system takes messages from various applications and creates packets for transmission over the network.</p> Signup and view all the answers

<p>Network communication protocols define standards and rules for the reliable exchange of data between devices.</p> Signup and view all the answers

<p>Communication mediums in a computer network can include wired connections (like cables) and wireless technologies (like radio).</p> Signup and view all the answers

<p>A computer network is a set of computers and networking devices connected together to enable resource sharing, data exchange, and collaboration.</p> Signup and view all the answers

<p>A communication protocol defines the means, rules, and regulations for reliable communication between devices, including initialization, communication, and termination.</p> Signup and view all the answers

<p>A computer uses the Domain Name System (DNS) to resolve domain names into IPv4 addresses.</p> Signup and view all the answers

<p>Messages can contain text, data, voice, video, images, and HTML code.</p> Signup and view all the answers

<p>Telnet is a network protocol used for connecting to a remote computer to execute commands using a username and password.</p> Signup and view all the answers

<p>SSH, or Secure Shell, is used for securely connecting to a remote computer and executing commands, unlike Telnet which sends data in plaintext.</p> Signup and view all the answers

<p>Packets are formatted units of data carried over a network, typically including both the payload and header information.</p> Signup and view all the answers

<p>A domain name is a human-readable identifier for a computer on the internet, while an IPv4 address is a numerical label that identifies the device's location in the network.</p> Signup and view all the answers

<p>The routing table dictates where to send a packet, indicating the router's output interface toward the destination network.</p> Signup and view all the answers

<p>Routing tables can be constructed manually by a network administrator or dynamically using routing protocols.</p> Signup and view all the answers

<p>Examples of routing protocols include RIP and OSPF.</p> Signup and view all the answers

<p>Networking devices like routers are compared to road signs that help direct vehicles to their proper destinations.</p> Signup and view all the answers

<p>An entry in a routing table typically contains the IPv4 address of a remote network and the corresponding router's output interface.</p> Signup and view all the answers

<p>A router ensures packets reach the correct destination by utilizing its routing table to determine the appropriate exit interface.</p> Signup and view all the answers

<p>Networking devices are compared to components of a road network, like roads and signs, which facilitate the smooth flow of data like vehicles.</p> Signup and view all the answers