Computer Networks

Windows Communication Foundation (WCF) supports multiple protocols for service communication including TCP, HTTP, and MSMQ (Microsoft Message Queuing). This flexibility allows WCF services to communicate across different transport mechanisms depending on requirements like reliability, security, and transaction support.

Windows Communication Foundation (WCF) is designed to support multiple communication protocols for flexibility. Both TCP (for high-performance intranet scenarios) and HTTP (for internet-facing services) are natively supported protocols in WCF.

DTP stands for Desktop Publishing, which refers to the creation of documents using page layout software on a personal computer. This revolutionized the publishing industry by moving design and layout work from specialized professionals to general computer users.

PPTP is a VPN protocol that creates a secure tunnel for data transmission between networks. The 'Tunneling' in its name refers to encapsulating one network protocol within another, which is the core function of VPNs. Options A and B incorrectly use 'Transmission' and 'Transfer' instead of 'Tunneling'.

SSL (Secure Sockets Layer) is a cryptographic protocol designed to provide secure communication over a computer network. It creates an encrypted link between a web server and a browser, ensuring that all data transmitted remains private. The term 'Socket' refers to the endpoint of a network connection.

ICMP (Internet Control Message Protocol) is used for error reporting and network diagnostics. It's the protocol behind tools like ping and traceroute, which help troubleshoot network connectivity issues. The 'Control Message' part reflects its role in managing network communication problems.

TCP stands for 'Transmission Control Protocol,' one of the core protocols of the Internet Protocol Suite. It provides reliable, ordered, and error-checked delivery of data between applications. Note that it uses 'Protocol' not 'Procedure,' and 'Transmission' not 'Transfer.'

FTP stands for File Transfer Protocol, a standard network protocol used to transfer files between a client and server on a computer network. It's built on a client-server model architecture and separate control and data connections.

The infacmd ping command is used to verify connectivity and availability of Informatica domain components. It checks the Domain gateway (which handles client connections), the Domain host (primary server), and the node (where services run). It does not ping individual sessions or workflows directly - those are managed by the Integration Service, not checked via ping command.

Private IP ranges are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. The address 169.254.0.200 falls in the APIPA (169.254.0.0/16) range, which is link-local and not considered a private IP address for internal network use.

The Network layer (Layer 3) uses packets as its data unit. Frames are Layer 2 (Data Link), segments are Layer 4 (Transport), and bits are Layer 1 (Physical).

DNS (Domain Name System) uses port 53 for both UDP and TCP communication. Port 23 is used by Telnet, port 80 by HTTP, and port 110 by POP3 email protocol.

EIGRP (Enhanced Interior Gateway Routing Protocol) is a hybrid routing protocol that combines features of both distance-vector (like IGRP and RIP) and link-state (like OSPF) protocols. It uses DUAL algorithm for loop prevention and fast convergence.

RIP version 1 is a classful routing protocol that does not support VLSM (Variable Length Subnet Masking) or CIDR. IGRP, OSPF, and EIGRP all support VLSM. RIP v2 added VLSM support.