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Higher spending on public cloud service providers bad news for Cisco

Enterprise spending on public cloud service providers will increase almost 22% annually through 2020, depressing sales of data center switches from Cisco and other suppliers.

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Definitions
  • radio frequency (RF, rf)

    Radio frequency is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 GHz to as low as 9 kHz.

  • telematics

    Telematics uses GPS and mobile devices to send and receive information that helps control remote objects, primarily in the automotive industry.

  • adaptive routing (dynamic routing)

    Adaptive routing, also called dynamic routing, is a process for determining the optimal path a data packet should follow through a network to arrive at a specific destination. Adaptive routing can be compared to a commuter taking a different route to work after learning that traffic on his usual route is backed up.

Browse Networking Topics

Data Center

Learn about data center networking considerations, including evolving data center network architectures and components, emerging data center network protocols and standards, and converged data center and storage networks.

Recent Definitions

  • adaptive routing (dynamic routing)

    Adaptive routing, also called dynamic routing, is a process for determining the optimal path a data packet should follow through a network to arrive at a specific destination. Adaptive routing can be compared to a commuter taking a different route to work after learning that traffic on his usual route is backed up.

  • Internet of Things (IoT)

    The Internet of Things (IoT) is an environment in which objects, animals or people are assigned unique identifiers and given the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction.

  • leaf-spine (leaf-spine architecture)

    Leaf-spine is a two-layer data center network topology that's useful for data centers that experience more east-west network traffic than north-south traffic. The topology is composed of leaf switches (to which servers and storage connect) and spine switches (to which leaf switches connect). Leaf switches mesh into the spine, forming the access layer that delivers network connection points for servers.

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Administration

Find general information and resources for network administration, including local area network (LAN) administration and Windows and Linux networking. Learn about the OSI Model and Cisco certifications as well as general career information and case studies. You'll also find our library of networking book chapter excerpts and tutorials on various networking topics.

Recent Definitions

  • telematics

    Telematics uses GPS and mobile devices to send and receive information that helps control remote objects, primarily in the automotive industry.

  • wavelength

    A wavelength is a measure of distance between two identical peaks (high points) or troughs (low points) in a wave -- a repeating pattern of traveling energy like light or sound.

  • CCNA (Cisco Certified Network Associate) certification

    Cisco Certified Network Associaten (CCNA) is an entry-level certification for the Cisco certified professional program.

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Infrastructure

Advancements in enterprise hardware and network protocols are allowing network pros to take advantage of new technologies to design and implement logical and physical LANs that contribute to business success. In our network infrastructure section, find out what you need to know to design your enterprise local area network infrastructure, including 10/100/100 Ethernet and switching technology, green networking initiatives, PoE, VLANs, and information on IP addressing, subnetting, TCP/IP and network routing protocols.

Recent Definitions

  • telematics

    Telematics uses GPS and mobile devices to send and receive information that helps control remote objects, primarily in the automotive industry.

  • adaptive routing (dynamic routing)

    Adaptive routing, also called dynamic routing, is a process for determining the optimal path a data packet should follow through a network to arrive at a specific destination. Adaptive routing can be compared to a commuter taking a different route to work after learning that traffic on his usual route is backed up.

  • system administrator (sysadmin)

    A system administrator, or sysadmin, needs a variety of skills to manage, configure and provision IT systems that include servers, hardware and software.

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Network Mgmt

Our network management resources provide you with information on end-to-end network performance, network monitoring, configuration management and applications management. You'll find advice on how to select the best network management software and how to integrate management tools with your network environment.

Recent Definitions

  • von Neumann bottleneck

    The von Neumann bottleneck is a limitation on throughput caused by the standard personal computer architecture.

  • latency

    In a computer system, latency usually refers to any delay or waiting that causes noticeable increases of real or perceived response time. Read our definition of latency for more information about network latency, computer latency, Internet latency and other types, the issues they cause and what you can do about them.

  • trunk

    A trunk is a physical path or link in a communications system that interconnects major switching centers or nodes and is designed to handle many transmissions simultaneously.

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Network Security

Here you'll find network security resources for selecting and implementing security devices and maintaining secure networks. Find out how to design a secure network perimeter, where to locate a firewall and whether you need network access control.

Recent Definitions

  • pervasive computing (ubiquitous computing)

    Pervasive computing (ubiquitous computing) is the growing trend of embedding computational capability into everyday objects to enable them to communicate and perform useful tasks.

  • gateway

    A gateway is a network device that provides an interface to another network that uses a different protocol and that all data must pass through to use its routing paths.

  • tablet (tablet PC)

    A tablet is a wireless, portable personal computer with a touchscreen interface. The tablet form factor is typically smaller than a notebook computer, but larger than a smartphone.

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Virtualization

Virtualization is becoming less a buzzword and more just the way things are done, so networking professionals must be aware of the challenges (and benefits) virtualization presents for network configuration, performance and management. Get up to speed on the various types of virtualization such as server virtualization and storage virtualization; find out virtualization's effects on network performance. Find out how to transition to a virtualized environment and the best tools for managing network relationships between VMs and between virtual and physical devices in this section.

Recent Definitions

  • logical unit number (LUN)

    A logical unit number (LUN) identifies one or more physical or virtual storage devices to a SCSI initiator in a host server to enable data exchange.

  • NVGRE (Network Virtualization using Generic Routing Encapsulation)

    NVGRE (Network Virtualization using Generic Routing Encapsulation) is a network virtualization method that uses encapsulation to create large numbers of virtual LANs (VLANs) for subnets that can extend across dispersed data centers and Layers 2 and 3.

  • SDN controller (software-defined networking controller)

    An SDN controller is an application in software-defined networking (SDN) that manages flow control to enable intelligent networking. SDN controllers are based on protocols, such as OpenFlow, that allow servers to tell switches where to send packets.

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WLANs

Wireless networking technology is ever-increasing in enterprise IT infrastructure. For information on what products you need to set up a wireless local area network (WLAN), navigate this WLAN section to answer your questions on wireless security encryption, equipment implementation, and wireless protocols and standards (like 802.11n). We also cover wireless network management tools that aid you in troubleshooting Wi-Fi problems.

Recent Definitions

  • radio frequency (RF, rf)

    Radio frequency is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 GHz to as low as 9 kHz.

  • line of sight (LOS)

    The level of obstruction in a line of sight determines not only the visibility from one point to another but also the quality of signal reception for wireless transmissions, such as Wi-Fi.

  • telematics

    Telematics uses GPS and mobile devices to send and receive information that helps control remote objects, primarily in the automotive industry.

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SearchCompliance

  • PCAOB (Public Company Accounting Oversight Board)

    The Public Company Accounting Oversight Board (PCAOB) is a Congressionally-established nonprofit that assesses audits of public ...

  • cyborg anthropologist

    A cyborg anthropologist is an individual who studies the interaction between humans and technology, observing how technology can ...

  • RegTech

    RegTech, or regulatory technology, is a term used to describe technology that is used to help streamline the process of ...

SearchSecurity

  • email spam

    Email spam, or junk email, is unsolicited bulk messages sent through email with commercial, fraudulent or malicious intent.

  • distributed denial of service (DDoS) attack

    A distributed denial-of-service attack occurs when an attack originates from multiple computers or devices, usually from multiple...

  • application whitelisting

    Application whitelisting is the practice of identifying applications that have been deemed safe for execution and restricting all...

SearchHealthIT

  • athenahealth Inc.

    Based in Watertown, Mass., athenahealth Inc. is a leading vendor of cloud-based EHRs for small to medium-sized physician ...

  • Affordable Care Act (ACA or Obamacare)

    The Affordable Care Act (ACA) is legislation passed in 2010 that changed how uninsured Americans enroll in and receive healthcare...

  • HIPAA Privacy Rule

    The Standards for Privacy of Individually Identifiable Health Information, commonly known as the HIPAA Privacy Rule, establishes ...

SearchDisasterRecovery

  • disaster recovery as a service (DRaaS)

    One approach to a strong disaster recovery plan is DRaaS, where companies offload data replication and restoration ...

  • data recovery

    Data recovery restores data that has been lost, accidentally deleted, corrupted or made inaccessible. Learn how data recovery ...

  • disaster recovery plan (DRP)

    A company's disaster recovery policy is enhanced with a documented DR plan that formulates strategies, and outlines preparation ...

SearchStorage

  • yottabyte (YB)

    A yottabyte is a measure of theoretical storage capacity and is 2 to the 80th power bytes, or, in decimal, approximately 1,000 ...

  • Kilo, mega, giga, tera, peta, exa, zetta and all that

    Kilo, mega, giga, tera, peta, exa, zetta are among the list of prefixes used to denote the quantity of something, such as a byte ...

  • brontobyte

    A brontobyte is a measure of memory or data storage that is equal to 10 to the 27th power of bytes.

SearchSolidStateStorage

  • PCIe SSD (PCIe solid-state drive)

    A PCIe SSD (PCIe solid-state drive) is a high-speed expansion card that attaches a computer to its peripherals.

  • SSD caching

    SSD caching, also known as flash caching, is the temporary storage of data on NAND flash memory chips in a solid-state drive so ...

  • NVDIMM (Non-Volatile Dual In-line Memory Module)

    An NVDIMM (non-volatile dual in-line memory module) is hybrid computer memory that retains data during a service outage.

SearchCloudStorage

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA ...

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