Computer Networks

RPC stands for Remote Procedure Call, a protocol where one program can execute a procedure/function on another computer across a network. It's about calling procedures (functions), not processes (running programs). The 'C' option correctly identifies the full form.

In WebLogic, SSL is configured at the individual Server level. This design allows each server within a domain to have its own unique SSL settings, private keys, and digital certificates.

WebLogic clusters use multicast IP addresses for cluster-wide communication including heartbeat messages, health monitoring, and state synchronization. All server instances in a cluster listen on the same multicast address (port and IP) to receive broadcasts from other cluster members - this enables efficient one-to-many communication without requiring point-to-point connections between every server.

SMB stands for System Managed Buffering, a feature in mainframe systems where the system automatically manages buffer allocation and usage based on workload characteristics. This is distinct from manual buffer management. Option B is incorrect because the full term is Buffering, not buffer.

Incoming Mail Service protocols are POP3 and IMAP, which retrieve emails from a server. SMTP is Simple Mail Transfer Protocol used exclusively for OUTGOING mail transmission, not incoming. HTTP is a web protocol, not a mail protocol at all. Therefore, SMTP is the correct answer as it is not used for incoming mail.

FTP stands for File Transfer Protocol, which is a standard network protocol used to transfer computer files between a client and server on a computer network. Option A incorrectly substitutes 'Transfer' with 'Transmission.' Options C and D refer to different protocols entirely (TCP is a transport layer protocol, and there is no standard 'Data Transmission Protocol').

FTP (File Transfer Protocol) uses port 21 by default for the control connection. This is the well-known port assigned by IANA for FTP, and it's one of the fundamental network port numbers that administrators should memorize. The other options (12, 23, 32) are associated with different services or are not standard FTP ports.

Windows Remote Desktop Protocol (RDP) uses port 3389 by default. This is the standard port for Terminal Services and Remote Desktop Connections. The other options listed are for different protocols: NTP uses port 123 for time synchronization, DNS uses port 53 for domain name resolution, and SSH uses port 22 for secure shell access.

SIP stands for Session Initiation Protocol, which is a signaling protocol used for initiating, maintaining, modifying, and terminating real-time sessions that involve video, voice, messaging, and other communications applications over IP networks. Options A and B incorrectly use 'Internet' instead of 'Initiation,' while Option D uses 'Simple' instead of 'Session.'

SIP (Session Initiation Protocol) supports multi-party calls through various architectures. It can use a Multipoint Control Unit (MCU) which acts as a central mixing bridge, or establish fully-meshed interconnections where each endpoint connects directly to every other endpoint, avoiding the need for multicast support which isn't always available.

SSL stands for Secure Sockets Layer. It's a cryptographic protocol designed to provide secure communication. 'Sockets' refers to the network socket abstraction, not 'Line' or other terms. SSL was the predecessor to TLS (Transport Layer Security). Note that SSL is now deprecated in favor of TLS.

SAP router uses a configuration file called saprouttab to define routing rules and access permissions. The file specifies which connections are allowed through the SAP router and to which destinations. Options A and B are similar but incorrect filenames, while D has the wrong extension and naming convention.

SAP supports four main types of RFC (Remote Function Call): Synchronous RFC (sRFC) where the calling system waits for the result, Asynchronous RFC (aRFC) where the calling system continues immediately, Transactional RFC (tRFC) where calls are executed once in order, and Queued RFC (qRFC) which extends tRFC with serialization by queue. 'Fast RFC' is not a standard RFC type in SAP's RFC architecture.

The default TCP port used by the SAProuter service to facilitate secure network connections between SAP systems is 3299.