Computer Networks

IPv6 removed the broadcast addressing mode that existed in IPv4. Instead, IPv6 uses multicast for one-to-many communication. Unicast, anycast, and multicast all exist in IPv6, but broadcast was eliminated to improve efficiency.

In IPv6, ARP (Address Resolution Protocol) is replaced by ICMPv6 through the Neighbor Discovery Protocol (NDP). ARPv6 doesn't exist, and DHCPv6 is for address configuration not address resolution. ICMPv6 handles neighbor solicitation and advertisement.

This is a freebie question testing attention rather than technical knowledge. The content itself explicitly states 'this is right answer' for option C. The other options are intentionally dismissive ('no no no', 'just fact').

NAT (Network Address Translation) is a method used in networking to remap IP addresses by modifying network address information in packet headers. It allows multiple devices to share a single public IP address, conserving address space.

NAT (Network Address Translation) is a router function that allows multiple devices on a local network to share a single public IP address when accessing the internet. It translates private IP addresses to a public one and vice versa. This conserves IP addresses and adds a layer of security by hiding internal network addresses.

Option C is correct: The analytics plugin uses SAWTCP protocol to communicate with BI Presentation Services. Options A (TCP) and B (UDP) are incorrect protocols. Option D (HTTP) is used for web browser communication, not plugin communication.

Microsoft Remote Desktop Protocol (RDP) uses port 3389 as the default port for Terminal Server connections.

Telnet protocol uses port 23 by default for unencrypted text-based remote terminal connections and command-line access.

LDAP uses port 389 as the default port for directory service operations. Port 636 is used for LDAPS (LDAP over SSL/TLS).

SMTP uses port 25 as the default port for email transmission between mail servers. This is the standard for mail routing.

HTTP uses port 80 as the default port for unencrypted web traffic. HTTPS (encrypted) uses port 443.

HTTPS (HTTP over SSL/TLS) uses port 443 as its well-known port. This is the standardized port for secure HTTP traffic. Port 444, 445, and 441 are used for other services (444 for SNPP, 445 for SMB over TCP).

Secure Shell (SSH) is a cryptographic network protocol for secure data communication. The standard TCP port for SSH is 22, used for secure logins, file transfers (scp, sftp), and port forwarding/tunneling.

Simple Network Management Protocol (SNMP) is used for network device management. SNMP agents listen on UDP port 161 for queries and commands from managers. SNMP traps (notifications) are sent to port 162.

Domain Name System (DNS) resolves domain names to IP addresses. DNS uses both TCP and UDP on port 53. UDP is used for standard queries due to its low overhead, while TCP is used for zone transfers and larger responses.