Podcast
Questions and Answers
What does FTP require from users for authentication?
What does FTP require from users for authentication?
- Password only
- Biometric verification
- Two-factor authentication
- Credentials (correct)
Which channel is used for transferring files in FTP?
Which channel is used for transferring files in FTP?
- Control channel
- Data channel (correct)
- Command channel
- Response channel
In active transfer mode, who initiates the data connection?
In active transfer mode, who initiates the data connection?
- Intermediate router
- Server (correct)
- Both client and server
- Client
What is a characteristic of SFTP compared to FTP?
What is a characteristic of SFTP compared to FTP?
What is the primary purpose of the Server Message Block Protocol (SMB)?
What is the primary purpose of the Server Message Block Protocol (SMB)?
Which operating systems commonly use SMB?
Which operating systems commonly use SMB?
Which port does SFTP use for its operations?
Which port does SFTP use for its operations?
What is the main function of the command channel in FTP?
What is the main function of the command channel in FTP?
What is the main purpose of the Hyper Text Transfer Protocol (HTTP)?
What is the main purpose of the Hyper Text Transfer Protocol (HTTP)?
What does HTTPS stand for?
What does HTTPS stand for?
Which port does HTTP typically use?
Which port does HTTP typically use?
Which statement about HTTP and HTTPS is true?
Which statement about HTTP and HTTPS is true?
What happens when a user enters a URL in a browser?
What happens when a user enters a URL in a browser?
What is the first step when a user wants to retrieve a webpage?
What is the first step when a user wants to retrieve a webpage?
What is returned by the web server after processing an HTTP Request?
What is returned by the web server after processing an HTTP Request?
In which way does HTTPS differ from HTTP?
In which way does HTTPS differ from HTTP?
What is the primary purpose of first hop redundancy?
What is the primary purpose of first hop redundancy?
Which of the following protocols is commonly used for quick failover in first hop redundancy?
Which of the following protocols is commonly used for quick failover in first hop redundancy?
Why are multiple routers used in first hop redundancy?
Why are multiple routers used in first hop redundancy?
What is crucial for businesses that cannot afford downtime?
What is crucial for businesses that cannot afford downtime?
Which of the following best supports business continuity plans?
Which of the following best supports business continuity plans?
What is the primary purpose of a load balancer?
What is the primary purpose of a load balancer?
How does a load balancer improve application performance?
How does a load balancer improve application performance?
What is a significant benefit of using load balancers?
What is a significant benefit of using load balancers?
Which type of load balancer involves hardware?
Which type of load balancer involves hardware?
What is a primary function of high availability clusters?
What is a primary function of high availability clusters?
What do high availability clusters automatically manage?
What do high availability clusters automatically manage?
Which of the following algorithms is used by load balancers?
Which of the following algorithms is used by load balancers?
When are high availability clusters ideally used?
When are high availability clusters ideally used?
What does VoIP primarily transmit?
What does VoIP primarily transmit?
What is a primary function of a Private Branch Exchange (PBX)?
What is a primary function of a Private Branch Exchange (PBX)?
Which of the following is a characteristic of a VoIP-enabled PBX?
Which of the following is a characteristic of a VoIP-enabled PBX?
Which protocol is responsible for initiating, maintaining, and terminating real-time communication sessions?
Which protocol is responsible for initiating, maintaining, and terminating real-time communication sessions?
What does the Real-Time Transport Protocol (RTP) focus on?
What does the Real-Time Transport Protocol (RTP) focus on?
What ports does Session Initiation Protocol (SIP) use for non-encrypted communication?
What ports does Session Initiation Protocol (SIP) use for non-encrypted communication?
What type of information does the Real-Time Control Protocol (RTCP) provide?
What type of information does the Real-Time Control Protocol (RTCP) provide?
Which statement is true regarding VoIP services?
Which statement is true regarding VoIP services?
What advantage does a VoIP-enabled PBX provide over traditional PBX systems?
What advantage does a VoIP-enabled PBX provide over traditional PBX systems?
Which of these protocols primarily transports audio/video data in real time?
Which of these protocols primarily transports audio/video data in real time?
Study Notes
Hyper Text Transfer Protocol (HTTP)
- HTTP is the foundation of data exchange on the web
- HTTP is used to fetch resources like HTML documents, images, and videos from the web
- HTTP uses port 80
- HTTP uses a URL beginning with
http://
###Â HTTP Secure (HTTPS)
- HTTPS is a secure version of HTTP
- HTTPS uses TLS (SSL) encryption
- HTTPS uses port 443
- HTTPS URLs begin with
https://
File Transfer Protocol (FTP)
- FTP requires users to provide credentials
- FTP may allow anonymous access
- FTP has two channels: command channel for instructions/responses and data channel for file transfers
- FTP has two transfer modes: active and passive.
- Active mode: server connects back to the client to transfer data
- Passive mode: the client initiates command/data connections to avoid firewall issues
Secure File Transfer Protocol (SFTP)
- SFTP encrypts data
- SFTP uses a single channel
- SFTP uses port 22
###Â Server Message Block Protocol (SMB)
- SMB allows computers on the same network to share resources
- SMB is used by Windows and Linux using Samba
Voice and Video Services
- VoIP transmits voice calls over IP networks
- VoIP supports voice, video, and multimedia sessions
- PBX is a Private Branch Exchange
- PBX connects internal phone lines within an organization
- PBX manages incoming/outgoing calls, voicemail, and call forwarding
- VoIP-Enabled PBX combines PBX functions with VoIP and operates over LAN or WAN
VoIP Protocols
- Real-Time Protocol (RTP) transports audio/video over the Internet in real-time
- RTP uses even-numbered UDP ports to stream media
- Real-Time Transport Control Protocol (TRCP) provides out-of-band statistics and control information for RTP sessions
- TRCP uses the next higher odd-numbered port from the RTP port
- Session Initiation Protocol (SIP) initiates, maintains, and terminates real-time communication sessions
- SIP uses TCP/UDP ports 5060 (non-encrypted) and 5061 (TLS-encrypted)
Load Balancer
- Load Balancer distributes network traffic across multiple servers
- Load Balancers can be hardware-based or software-based
- Load Balancers reduce downtime and increase scalability
- Load Balancers reduce the workload on individual servers
High Availability Clusters
- High Availability Clusters ensure continuous operation and minimize downtime via redundant components and failover mechanisms
- High Availability Clusters are ideal for applications where uptime is crucial
- High Availability Clusters automatically manage failovers to maintain operations
- High Availability Clusters monitor system health
First Hop Redundancy
- First Hop Redundancy ensures uninterrupted network service by automatically switching to a backup gateway if the primary one fails
- First Hop Redundancy uses protocols like HSRP/VRRP
Summary
- Implement HTTPS everywhere on web servers
- Utilize secure protocols like SFTP/FTPS for file transfers.
- Restrict unencrypted services (SMB) to trusted internal networks
- Develop DR/HA plans for business continuity.
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Description
This quiz covers key networking protocols, including HTTP, HTTPS, FTP, SFTP, and SMB. Understand their functionalities, secure versions, and key differences. Test your knowledge on how these protocols facilitate data exchange over the internet.
