Which protocol primarily uses the three-way handshake to establish a connection between client and server?
- HTTP
- IP
- TCP
- UDP
TCP (Transmission Control Protocol) primarily uses the three-way handshake to establish a connection between a client and a server. This process involves the client and server exchanging a series of messages to confirm and synchronize their communication, ensuring reliable data transfer.
In terms of security, what is the primary advantage of using a VPN when accessing public Wi-Fi hotspots?
- VPNs block access to public Wi-Fi networks for unauthorized users.
- VPNs can bypass Wi-Fi login pages.
- VPNs encrypt data traffic, preventing eavesdropping and enhancing privacy on open Wi-Fi networks.
- VPNs provide faster internet speeds on public Wi-Fi networks.
The primary advantage of using a VPN (Virtual Private Network) when accessing public Wi-Fi hotspots is that it encrypts your data traffic, preventing potential eavesdropping and enhancing your privacy and security on open and potentially unsecured networks.
If a packet doesn't reach its destination within a certain timeframe, the transport layer might consider it _______.
- Delivered
- Duplicate
- Lost
- Reordered
If a packet doesn't reach its destination within a certain timeframe or is not acknowledged by the receiver, the transport layer considers it lost and may trigger retransmission to ensure the delivery of the packet.
What potential security benefit can NAT provide to a private network?
- Enhance network speed
- Hide internal IP addresses from external networks
- Improve data encryption
- Simplify network management
NAT (Network Address Translation) can hide the internal IP addresses of devices in a private network from external networks, providing an additional layer of security. It acts as a barrier between the internal network and the public internet, making it harder for external threats to directly access internal devices.
In terms of scale, which network lies between a LAN and a WAN, often covering a city or a large campus?
- LAN
- MAN
- PAN
- WAN
MAN (Metropolitan Area Network) is a network that typically covers a city or a large campus. It has a larger geographic scope than a LAN (Local Area Network) but is smaller than a WAN (Wide Area Network). MANs are often used by service providers to connect multiple LANs within a city.
What does the acronym MAC in MAC Address stand for?
- Media Access Control
- Memory Access Control
- Message Access Control
- Modem Access Control
MAC in MAC Address stands for "Media Access Control." It is a hardware address that uniquely identifies each node on a network, and it's used to control access to the network medium.
Julia is a digital nomad who works from various countries. She needs a network that can provide her with consistent connectivity regardless of her location, connecting her to her company's servers back in her home country. Which network type best serves Julia's needs?
- LAN
- PAN
- VPN
- WLAN
Julia should use a VPN (Virtual Private Network). A VPN allows users to securely connect to their company's network over the internet, providing consistent and secure connectivity, no matter where Julia is located. It ensures that her data is encrypted and private.
If an email client is set up to delete messages from the server after downloading, it's most likely using the _______ protocol.
- HTTP
- IMAP
- POP3
- SMTP
POP3 (Post Office Protocol version 3) is commonly used for email clients that download messages from the server and delete them from the server after retrieval. It's a one-way communication protocol for email.
After receiving an ACK during the three-way handshake, what step does the server take to complete the connection establishment?
- None of the above
- Sending Data
- Sending a FIN
- Sending a SYN
After the three-way handshake is completed by the server receiving an ACK (Acknowledgment) from the client, the server can start sending data over the established connection. This data transfer phase follows the initial connection setup.
In the realm of error correction, how does the Hamming distance contribute to determining the number of errors?
- Hamming distance helps determine the location and number of errors
- Hamming distance is unrelated to error correction
- Hamming distance is used to find synchronization errors
- Hamming distance is used to measure the error rate
The Hamming distance is used to determine the number and location of errors in error-correcting codes. It measures the number of differing bits between two binary sequences and helps identify the exact bit positions that need correction. A smaller Hamming distance indicates a better error-correcting capability of the code.