Internet Tehnologije 2 Quiz

The term "caching" in the context of domain name systems refers to temporarily storing the obtained information.

The correct answer is "сервис електронске поште" which translates to "email service" in English. This is the most popular internet service among the options given.

The correct answer is "rs". In this domain name, "rs" is the top-level domain (TLD) which represents the country code for Serbia. TLDs are the last part of a domain name and indicate the type of organization or country associated with the website. In this case, "rs" indicates that the website belongs to an organization or entity in Serbia.

SMTP stands for Simple Mail Transfer Protocol. It is a communication protocol used for sending and receiving email messages. SMTP is responsible for the transmission of emails between mail servers. It allows email clients to send emails to a mail server, which then routes the message to the recipient's mail server. SMTP is a widely used protocol for email communication on the internet.

The correct answer is "клијент-сервер" because the Domain Name System (DNS) operates using a client-server architecture. In this architecture, the client sends a request to the DNS server to resolve a domain name into an IP address. The server then responds with the corresponding IP address, allowing the client to establish a connection with the desired website or service. This client-server model allows for efficient and scalable resolution of domain names across the internet.

Today, content management systems (CMS) are commonly used for the creation and maintenance of websites. These systems provide a user-friendly interface for managing and organizing website content, allowing users to easily update and publish new content without the need for technical expertise. CMS platforms also offer various features such as templates, plugins, and SEO optimization tools, making them a popular choice for website development and management.

The correct answer is "@" because the "@" symbol is commonly used in URLs to separate the username from the domain name. In this case, the URL requires authentication, so the "@" symbol indicates that the user must provide their username in order to access the resource.

The most commonly used protocol at the network layer is the Internet Protocol (IP). This protocol is responsible for addressing and routing data packets across networks. It ensures that data is delivered to the correct destination by using IP addresses. TCP (Transmission Control Protocol) is a transport layer protocol that works in conjunction with IP to provide reliable and ordered delivery of data. Ethernet protocol, on the other hand, is a data link layer protocol that defines how data is transmitted over a physical network. Option 4 is not a valid answer as it is not specified.

The correct answer is com, net, org. The question is asking about the top-level domain in a generic domain. The top-level domains com, net, and org are commonly used for commercial, network, and organization websites respectively.

The correct answer is "слоју апликације" which translates to "application layer" in English. This is the layer of the web service where the actual application logic and functionality are implemented. It is responsible for processing user requests, managing data, and generating responses. This layer interacts with the transport layer to send and receive data over the network.

The correct answer is "about 4 billion addresses". This is because the complete range of Internet Protocol (IP) addresses is divided into four classes: A, B, C, and D. Class A addresses allow for approximately 16 million addresses, Class B addresses allow for approximately 65 thousand addresses, and Class C addresses allow for approximately 256 addresses. However, Class D addresses are reserved for multicast addresses, leaving Class A, B, and C addresses to make up the majority of the address space. Therefore, the total range of IP addresses is approximately 4 billion.

A network gateway enables communication between neighboring computer networks. It serves as a bridge or connection point between two or more networks, allowing data to be transmitted and received between them. The gateway acts as a mediator, facilitating the exchange of information and ensuring that data packets are properly routed between the networks. It plays a crucial role in enabling communication and connectivity between different networks, allowing devices within these networks to communicate with each other.

The most important functionality of DNS is translating symbolic names into Internet protocol addresses. DNS acts as a directory service that allows users to access websites and other resources on the internet by using domain names instead of IP addresses. It maps the domain names to their corresponding IP addresses, making it easier for users to navigate the internet.

The correct answer is "преко 80%". This is because the statement says that research shows that the majority of sent emails are unwanted (spam) messages. "преко 80%" means "over 80%", indicating that more than 80% of sent emails are spam.

The correct answer is "resolver". The client component of the DNS service is responsible for resolving domain names to IP addresses. It sends requests to DNS servers to retrieve the corresponding IP address for a given domain name. The resolver is an essential part of the DNS system as it allows clients to access websites and other services using domain names instead of IP addresses.

Every document or image on the Internet must have a unique uniform resource locator (URL). This URL is used to locate and access the specific resource on the web. It serves as the address of the resource and allows users to navigate to it. The URL ensures that each resource has a distinct identifier, making it possible for users to access the desired content.

For the delivery of a package in a local network, physical addresses are used. Physical addresses, also known as MAC addresses, are unique identifiers assigned to network interfaces. They are used to identify and locate devices within a network. In the context of package delivery, physical addresses are necessary to ensure that the package is sent to the correct device in the local network.

The term "вишеструко удомљавање" (multihoming) refers to the affiliation of a computer with multiple computer networks.

The correct answer is "hosts file" because before the introduction of Domain Name System (DNS), the hosts file was used to map hostnames to IP addresses. The hosts file acted as a local database on a computer or device, allowing it to resolve domain names to their corresponding IP addresses without the need for a centralized DNS server. The hosts file was manually edited to add or modify hostname-to-IP mappings, providing a simple and basic way to resolve domain names.

The correct answer is 40 years. This suggests that electronic mail has been in use for a significant amount of time, indicating its widespread adoption and longevity as a communication tool.

In order to deliver a package to all members in the network, it is best to send it to the last address in the range. This ensures that all members in the network receive the package.

SMTP (Simple Mail Transfer Protocol) is the correct answer because it is a widely used protocol for sending and receiving emails. SMTP is responsible for the transmission of email messages between servers and is used by email clients to send outgoing mail to the server. It works in conjunction with other protocols like POP3 or IMAP, which are responsible for retrieving emails from the server. HTTP and FTP are not protocols specifically designed for email communication.

IPv4 addresses have a bit length of 32 bits.

Internet protocol addresses and network masks are assigned to network interfaces.

For the normal functioning of an email service on the Internet, the use of a domain name system is necessary. The domain name system is responsible for translating domain names (such as www.example.com) into IP addresses that computers can understand. This allows emails to be properly routed and delivered to the correct email servers. IMAP protocol, desktop clients, and protocols that offer data encryption are not necessary for the basic functioning of an email service, although they may provide additional features and security.

The given answer "прималац" is the local part of the email address. In an email address, the local part comes before the @ symbol and identifies the specific mailbox or user to which the email is being sent. In this case, "прималац" is the specific recipient or mailbox name. The remaining parts "домен" and "срб" represent the domain name and the top-level domain respectively.

The question is asking how many steps it will take for the computer to resolve the query for the singidunum.ac.rs domain after the given query. The correct answer is "два" which means "two" in English. This suggests that the computer will be able to resolve the query in just two steps.

The default time-to-live (TTL) for information provided by a DNS server is one day. This means that the information will be considered valid and cached by other DNS servers and clients for a period of one day before it needs to be refreshed. After one day, the information will expire and the DNS server will need to provide updated information.

Internet Protocol packets are called datagrams.

The correct answer is "систем доменских имена" which translates to "domain name system" in English. The domain name system is responsible for translating symbolic addresses, such as domain names, into logical addresses, such as IP addresses. It acts as a directory service that allows users to easily navigate the internet by using human-readable domain names instead of numerical IP addresses.

The introduction of network classes in 1981 led to the determination of the network size based on the first bits of the address. This means that the number of available addresses in a network can be determined by looking at the first few bits of the address. This allowed for more efficient allocation of IP addresses and better management of network resources.

The Internet Protocol address range 127.0.0.0/8 is reserved for loopback addresses, which are used to test network connectivity on the local machine. This address range is specifically designated for use within the local computer itself, allowing applications to communicate with each other without sending data over the network.

The correct answer is that the hosts files are still relevant and have a higher priority than DNS services. This means that the hosts files are still used to map hostnames to IP addresses on a local machine, and they take precedence over DNS services when resolving domain names.

The correct answer includes "Веб апликације" which means web applications, and "Веб презентације" which means web presentations. These are two main types of content found on websites. The other options listed, such as "Веб протоколи" (web protocols), "Веб браузери" (web browsers), and "фарме сервера" (server farms) are not types of content found on websites.

The main task of the network layer in both the OSI and TCP/IP communication models is to handle inter-network addressing. This involves assigning unique addresses to each device on the network so that they can be identified and communicate with each other across different networks. This layer is responsible for routing and forwarding data packets between different networks, ensuring that they reach their intended destination.

The TTL field in the Internet Protocol header indicates the remaining number of allowed hops for the packet. This field is decremented by one at each hop, and if it reaches zero, the packet is discarded. The purpose of the TTL field is to prevent packets from circulating indefinitely in the network and to ensure their timely delivery.

The correct answer is ARP protocol. The ARP (Address Resolution Protocol) protocol is responsible for translating logical addresses (IP addresses) into physical addresses (MAC addresses) in a network. It is used to find the MAC address of a device based on its IP address, allowing for communication between devices on the same network. The ARP protocol works by broadcasting a request for the MAC address of a specific IP address, and the device with that IP address responds with its MAC address. This information is then stored in the ARP cache for future use.

SMTP is a protocol used for sending email messages, while POP3 and IMAP are protocols used for receiving email messages. HTTP is a protocol used for accessing websites, and FTP is a protocol used for transferring files. Therefore, the correct answer is POP3 and IMAP, as they are examples of protocols used for receiving electronic mail.

The correct answer is "без успостављања и раскида везе" which translates to "without establishing and terminating a connection" in English. This means that the internet protocol functions without the need to establish a connection between devices and without the need to terminate the connection once data transfer is complete.

During the transmission of a packet through a computer network with the use of address translation (NAT), both the physical and logical addresses will be changed. The physical address refers to the MAC address of the network interface card, while the logical address is the IP address assigned to the device.

The correct answer is the part that determines the network and the part that determines the host. In IPv4 addresses, the first part identifies the network and the remaining part identifies the host. The network portion is used to route the packet to the correct network, while the host portion is used to identify the specific device within that network.

The main functions of the Internet protocol include addressing remote networks and computers, as well as fragmenting data. These functions allow for the efficient routing and transmission of data over the internet.

During the transmission of a packet through a multiple computer network (without using address translation - NAT), the physical addresses will change.

The correct answer includes the domain extensions rs, срб, and me. These domain extensions are specifically related to countries. rs is the country code top-level domain (ccTLD) for Serbia, срб is the ccTLD for Serbia in Cyrillic script, and me is the ccTLD for Montenegro. These domain extensions are used to identify websites that are associated with these specific countries.

In Internet Protocol version 4 (IPv4) addressing, the first address in the range is the network address, which represents the entire network. This address is used to identify the network itself and cannot be assigned to any individual device. On the other hand, the last address in the range is the broadcast address, which is used to send a message to all devices on the network. This address is also not assigned to any specific device. Therefore, the first address in the range (network address) and the last address in the range (broadcast address) cannot be used for addressing individual members in IPv4 networks.

Since a new computer is being added to the network, there will be a total of 16 entries added to the hosts files. This is because the hosts file is used for symbolic addressing of network members, and there are already 8 computers in the network. When the new computer is added, it will need to be listed in the hosts files of all the other computers, resulting in a total of 16 entries.

Based on the given uniform resource identifier (URI) example, "http://абв:гдђ@ежз.ијк/лњм/нњо?прс=тћу#фхц", it can be concluded that authentication is enabled because there is a username "абв" and a password "гдђ" included in the URI. This indicates that the user needs to authenticate themselves to access the resource.

The given question states that a new computer is being added to a network of eight computers. Symbolic addressing of members is done through hosts files. The question asks how many computers the administrator will have to change the content of these files on. Since the new computer is being added to the network, the administrator will have to update the hosts files on all nine computers in the network to include the new computer's information. Therefore, the correct answer is "девет" (nine).