1.
What application layer protocol is commonly used to support for file transfers between a client and a server?
Correct Answer
C. FTP
Explanation
FTP (File Transfer Protocol) is commonly used to support file transfers between a client and a server. FTP is specifically designed for transferring files over a network and provides a set of commands for the client to send to the server to perform file operations such as uploading, downloading, renaming, and deleting files. HTML (Hypertext Markup Language) is used for creating web pages, HTTP (Hypertext Transfer Protocol) is used for communication between web browsers and servers, and Telnet is used for remote access to computers. Therefore, FTP is the correct answer for this question.
2.
What are two forms of application layer software? (Choose two.)
Correct Answer(s)
A. Applications
E. Syntax
Explanation
The question is asking for two forms of application layer software. The correct answer is "applications" and "syntax". In the context of computer networking, the application layer is responsible for providing services and protocols that enable communication between applications. Applications refer to the actual software programs that users interact with, while syntax refers to the rules and structure used for data exchange between applications. Therefore, both applications and syntax are valid forms of application layer software.
3.
A network administrator is designing a network for a new branch office of twenty-five users. What are the advantages of using a client-server model? (Choose two.)
Correct Answer(s)
A. Centralized administration
C. Security is easier to enforce
Explanation
The client-server model offers centralized administration, which allows the network administrator to have control and manage all the resources and user accounts from a single location. This simplifies the management process and reduces the need for individual configurations on each user's device. Additionally, the client-server model provides easier enforcement of security measures as all data and access control can be managed and monitored centrally. This helps in ensuring consistent security policies across the network and makes it easier to detect and respond to any security threats.
4.
What is the purpose of resource records in DNS?
Correct Answer
B. Used by the server to resolve names
Explanation
Resource records in DNS are used by the server to resolve names. When a client sends a query to the DNS server, the server uses the resource records to look up and provide the corresponding IP address for the requested domain name. These records contain information such as the IP address, domain name, and other attributes related to the domain. By using these resource records, the server can efficiently and accurately resolve the names to their corresponding IP addresses, enabling proper communication and connectivity on the internet.
5.
What is the automated service that matches resource names with the required IP address?
Correct Answer
D. DNS
Explanation
DNS stands for Domain Name System. It is an automated service that matches resource names (such as domain names) with the required IP address. DNS is responsible for translating human-readable domain names (like www.example.com) into IP addresses (like 192.168.1.1) that computers can understand and use to communicate with each other over the internet. It acts as a directory or phonebook for the internet, allowing users to access websites and other resources by typing in easy-to-remember domain names instead of complex IP addresses.
6.
What three protocols operate at the Application layer of the OSI model? (Choose three.)
Correct Answer(s)
B. DNS
D. SMTP
E. POP
Explanation
DNS, SMTP, and POP are the three protocols that operate at the Application layer of the OSI model. DNS (Domain Name System) is responsible for translating domain names into IP addresses. SMTP (Simple Mail Transfer Protocol) is used for sending email messages between servers. POP (Post Office Protocol) is used for retrieving email messages from a mail server. These protocols are all application layer protocols that provide specific services for network applications.
7.
What are three properties of peer-to-peer applications? (Choose three.)
Correct Answer(s)
A. Acts as both a client and server within the same communication
C. Hybrid mode includes a centralized directory of files
D. Can be used in client-server networks
Explanation
Peer-to-peer applications have the ability to act as both a client and server within the same communication, allowing for direct communication between devices. They can also operate in a hybrid mode, which includes a centralized directory of files for easier sharing and access. Additionally, peer-to-peer applications can be used in client-server networks, providing flexibility in network configurations.
8.
Which application layer protocols correctly match a corresponding function? (Choose two.)
Correct Answer(s)
B. HTTP transfers data from a web server to a client
E. Telnet provides a virtual connection for remote access
Explanation
HTTP is an application layer protocol that is used to transfer data from a web server to a client. It is commonly used for accessing websites and retrieving web pages. Telnet, on the other hand, is also an application layer protocol that provides a virtual connection for remote access. It allows a user to remotely access and control a device or computer over a network.