2. Odbrana Vezbi Iz Protokola

MUA stands for Mail User Agent, which refers to a user application used for receiving and sending emails.

The correct answer is "zahtev - odgovor" because the HTTP protocol is based on the client-server model, where the client sends a request (zahtev) to the server and the server responds with a corresponding answer (odgovor). This request-response mechanism allows for communication and exchange of data between the client and the server, making it a fundamental principle of the HTTP protocol.

On a web server that has one interface with one IP address, it is possible to host multiple websites. This can be achieved by configuring virtual hosts or using a reverse proxy server. Virtual hosts allow the server to serve different websites based on the domain name or IP address requested by the client. The reverse proxy server acts as an intermediary between the client and the web server, allowing multiple websites to be hosted on the same IP address by forwarding requests to the appropriate backend server based on the requested domain name.

IMAP (Internet Message Access Protocol) is the correct answer because it is the most commonly used client protocol for receiving emails today. IMAP allows users to access their emails from multiple devices while keeping them stored on the mail server. It offers more advanced features compared to POP3 (Post Office Protocol), such as the ability to manage folders, search for specific emails, and synchronize changes across devices. UDP (User Datagram Protocol) is not a client protocol for receiving emails, making it an incorrect option.

The correct answer is "%SystemRoot%\windows\system32\driver\etc\services". This is the location where the list of registered ports by the IANA (Internet Assigned Numbers Authority) can be found on a Windows system.

BIND (Berkeley Internet Name Domain) is a widely used implementation of DNS (Domain Name System) servers. DNS servers are responsible for translating domain names into IP addresses, allowing users to access websites and other online services using human-readable names. Therefore, the correct answer is "implementation of DNS servers."

The correct answer is "Netstat je komanda koja prikazuje pregled stanja TCP i UDP uticnica (socketa) na lokalnom računaru." This answer accurately describes the function of the netstat command, which is to display the status of TCP and UDP sockets on the local computer.

When creating an MX record, one of the options that can be set is the "preference level" or priority. This setting allows the administrator to specify the priority of the mail servers listed in the MX record. The lower the priority number, the higher the preference for that mail server. This means that if multiple mail servers are listed in the MX record, the one with the lowest priority number will be tried first for delivering the email.

Dig is a command-line tool used for querying DNS (Domain Name System) servers. It is similar in purpose to the nslookup tool, as both are used for DNS queries. Nstsh, mdc, and nmap are not related to DNS queries and do not serve the same purpose as nslookup or dig.

The correct answer is "sudo rndc reload." This command is used to reload the configuration of the BIND DNS server. "sudo" is used to run the command with administrative privileges, "rndc" is the control utility for BIND, and "reload" is the specific action to reload the configuration. This command ensures that any changes made to the DNS server's configuration are applied without needing to restart the entire service.

The correct answer is "netstat" because it is a command-line tool used to display network connections, routing tables, and network interface statistics. It provides information about active connections, listening ports, and network protocols being used.

LAMP represents a web platform that combines Perl/Python/PHP, Apache, MySQL, and Linux. It is a popular and widely used combination of software technologies for building and deploying web applications. The acronym LAMP stands for Linux (operating system), Apache (web server), MySQL (database management system), and PHP/Perl/Python (programming languages). Together, these components provide a robust and scalable environment for hosting websites and web applications.

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In order for the newly created zone for direct searching on the DNS server to function, it is necessary to restart the DNS service on that server.

The correct answer is SMTP. SMTP (Simple Mail Transfer Protocol) is the protocol used by the client MTA agent (email application) when sending an email to the mail server. UDP (User Datagram Protocol) is a transport protocol used for sending datagrams over an IP network, but it is not typically used for email transmission. POP (Post Office Protocol) and IMAP (Internet Message Access Protocol) are both email retrieval protocols used by email clients to access emails from a mail server, not for sending emails.

UDP (User Datagram Protocol) is the correct answer. DNS (Domain Name System) protocol uses UDP for sending queries to resolve computer names into IP addresses. UDP is a connectionless protocol that provides a simple and lightweight way of transmitting data over the network. It is commonly used for applications that require low latency and do not require reliable delivery of data, such as DNS.

SMTP relay se koristi kada lokalni SMTP server nema mogućnost direktnog povezivanja sa odredišnim SMTP serverom. Ovo se može dogoditi ako postoji firewall ili druga ograničenja koja sprečavaju direktnu vezu. U takvim situacijama, SMTP relay server se koristi kao posrednik koji preuzima email poruke sa lokalnog servera i prosleđuje ih odredišnom serveru. Na taj način, SMTP relay omogućava slanje emailova čak i kada direktna veza nije moguća.

The correct answer states that a caching only DNS server is not authoritative for any zone. This means that a caching only DNS server does not have the ability to provide authoritative answers for any specific domain or zone. Instead, it only caches and resolves DNS queries from clients by querying other authoritative DNS servers.

The given answer suggests that access was made to a WEB server. The information provided in the question indicates that there were access attempts made to various servers such as WINS, FTP, and DNS. However, the answer states that specifically, access was made to a WEB server.

When we create a symbolic link in the sites-enabled directory, the content of the website located on the Apache server becomes accessible.

The directive LISTEN is used to determine the UDP port on which the Apache server accepts connection requests.