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  2. CCNA - Wikipedia

    en.wikipedia.org/wiki/CCNA

    CCNA (Cisco Certified Network Associate) is an entry-level information technology (IT) certification offered by Cisco Systems. CCNA certification is widely recognized in the IT industry as the foundational step for careers in IT positions and networking roles. [1] [2] Cisco exams routinely change in response to evolving IT trends. [3]

  3. Cisco Certified Entry Networking Technician - Wikipedia

    en.wikipedia.org/wiki/Cisco_Certified_Entry...

    The CCENT certification was an interim step to Associate level or directly with CCNA and CCDA certifications. While the CCENT covered basic networking knowledge; it did not get involved with the more intricate technical aspects of the Cisco routing and switching and network design. The certification validated the skills essential for entry ...

  4. Job interview - Wikipedia

    en.wikipedia.org/wiki/Job_interview

    Other possible types of questions that may be asked alongside structured interview questions or in a separate interview include background questions, job knowledge questions, and puzzle-type questions. A brief explanation of each follows. Background questions include a focus on work experience, education, and other qualifications. [68]

  5. Amazon is reviving an obscure entry-level interview procedure ...

    www.aol.com/finance/amazon-reviving-obscure...

    But Amazon is reinstating bar raisers into the interview process for entry-level software engineering jobs, called “SDE-1 (L4)” roles, according to an internal memo obtained by Business Insider.

  6. LinkedIn - Wikipedia

    en.wikipedia.org/wiki/LinkedIn

    The platform is primarily used for professional networking and career development, and allows jobseekers to post their CVs and employers to post jobs. From 2015, most of the company's revenue came from selling access to information about its members to recruiters and sales professionals and has also introduced their own ad portal named LinkedIn ...

  7. Network packet - Wikipedia

    en.wikipedia.org/wiki/Network_packet

    In telecommunications and computer networking, a network packet is a formatted unit of data carried by a packet-switched network. A packet consists of control information and user data; [ 1 ] the latter is also known as the payload .

  8. Network layer - Wikipedia

    en.wikipedia.org/wiki/Network_layer

    The network layer provides the means of transferring variable-length network packets from a source to a destination host via one or more networks. Within the service layering semantics of the OSI (Open Systems Interconnection) network architecture, the network layer responds to service requests from the transport layer and issues service requests to the data link layer.

  9. End-to-end principle - Wikipedia

    en.wikipedia.org/wiki/End-to-end_principle

    Internet Protocol (IP) is a connectionless datagram service with no delivery guarantees.On the Internet, IP is used for nearly all communications. End-to-end acknowledgment and retransmission is the responsibility of the connection-oriented Transmission Control Protocol (TCP) which sits on top of IP.