Practice Test Version 3.0 Comptia JK0-016: Practice Exam QUESTION NO: 1
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Upcoming Standards in Wireless Local Area Networks
Preprint: http://arxiv.org/abs/1307.7633 Original Publication: UPCOMING STANDARDS IN WIRELESS LOCAL AREA NETWORKS Sourangsu Banerji Department of Electronics & Communication Engineering, RCC-Institute of Information Technology, India Email: [email protected] ABSTRACT: Network technologies are However out of every one of these standards, traditionally centered on wireline solutions. WLAN and recent developments in WLAN Wireless broadband technologies nowadays technology will be our main subject of study in this particular paper. The IEEE 802.11 is the most provide unlimited broadband usage to users widely deployed WLAN technology as of today. that have been previously offered simply to Another renowned counterpart is the HiperLAN wireline users. In this paper, we discuss some of standard by ETSI. These two technologies are the upcoming standards of one of the emerging united underneath the Wireless Fidelity (Wi-fi) wireless broadband technology i.e. IEEE alliance. In literature though, IEEE802.11 and Wi- 802.11. The newest and the emerging standards fi is used interchangeably and we will also continue with the same convention in this fix technology issues or add functionality that particular paper. A regular WLAN network is will be expected to overcome many of the associated with an Access Point (AP) in the current standing problems with IEEE 802.11. middle/centre and numerous stations (STAs) are connected to this central Access Point (AP).Now, Keywords: Wireless Communications, IEEE there are just two modes in which communication 802.11, WLAN, Wi-fi. normally takes place. 1. Introduction Within the centralized mode of communication, The wireless broadband technologies were communication to/from a STA is actually carried developed with the objective of providing services across by the APs. -
CCENT/CCNA ICND1 100-105 Official Certification Guide
CHAPTER 6 Using the Command-Line Interface This chapter covers the following exam topics: 1.0 Network Fundamentals 1.6 Select the appropriate cabling type based on implementation requirements NOTE This chapter primarily explains foundational skills required before you can explore the roughly 20 exam topics that use the verbs configure, verify, and troubleshoot. To create an Ethernet LAN, a network engineer starts by planning. They consider the requirements, create a design, buy the switches, contract to install cables, and configure the switches to use the right features. The CCENT and CCNA Routing and Switching exams focus on skills like understanding how LANs work, configuring different switch features, verifying that those features work ptg17246291 correctly, and finding the root cause of the problem when a feature is not working cor- rectly. The first skill you need to learn before doing all the configuration, verification, and troubleshooting tasks is to learn how to access and use the user interface of the switch, called the command-line interface (CLI). This chapter begins that process by showing the basics of how to access the switch’s CLI. These skills include how to access the CLI and how to issue verification commands to check on the status of the LAN. This chapter also includes the processes of how to configure the switch and how to save that configuration. Note that this chapter focuses on processes that provide a foundation for most every exam topic that includes the verbs configure, verify, and troubleshoot. Chapter 7, “Analyzing Ethernet LAN Switching,” Chapter 8, “Configuring Basic Switch Management,” and Chapter 9, “Configuring Switch Interfaces,” then examine particular commands you can use to verify and configure different switch features. -
Building Cisco Multilayer Switched Networks
BCMSN Building Cisco Multilayer Switched Networks Volume 2 Version 2.2 Student Guide CLS Production Services: 08.05.05 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. Copyright © 2005, Cisco Systems, Inc. All rights reserved. Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed on the Cisco Website at www.cisco.com/go/offices. Argentina • Australia • Austria • Belgium • Brazil • Bulgaria • Canada • Chile • China PRC • Colombia • Costa Rica Croatia • Cyprus • Czech Republic • Denmark • Dubai, UAE • Finland • France • Germany • Greece Hong Kong SAR • Hungary • India • Indonesia • Ireland • Israel • Italy • Japan • Korea • Luxembourg • Malaysia Mexico • The Netherlands • New Zealand • Norway • Peru • Philippines • Poland • Portugal • Puerto Rico • Romania Russia • Saudi Arabia • Scotland • Singapore • Slovakia • Slovenia • South Africa • Spain • Sweden • Switzerland Taiwan • Thailand • Turkey • Ukraine • United Kingdom • United States • Venezuela • Vietnam • Zimbabwe Copyright © 2005 Cisco Systems, Inc. All rights reserved. CCSP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service -
BCM56980 12.8 Tb/S Multilayer Switch
Data Sheet BCM56980 12.8 Tb/s Multilayer Switch Overview pathing technologies; enhanced instrumentation; switching, migration, and robust buffer performance including many- The Broadcom® BCM56980 family is a class of to-one burst absorption capabilities that assist in TCP incast high-performance, high-connectivity network switching scenarios. devices supporting up to 32x 400GbE, 64x 200GbE, or 128x 100GbE switch ports. The device family features a With the BCM56980 device, customers can build data maximum of 32 integrated BlackhawkCores, each with eight centers with much higher server node counts while integrated 50G PAM4 SerDes transceivers and associated simultaneously improving per-port power efficiency. The PCS for native support of XFI, 10GBASE-KR/CR/SR/ER/LR, BCM56980 is built using state-of-the-art silicon process 40GBASE-KR4/CR4/SR4/ER4/LR4, 50GbE, and technology and incorporates advanced power management 100GBASE-KR4/CR4/SR4/ER4/LR4. The BCM56980 features to minimize power based on the features in use. delivers high-bandwidth, glueless network connectivity up to Features 12.8 Tb/s on a single chip. General features: The BCM56980 is a family of Ethernet switches designed to address performance, capacity, and service requirements 256x 50G PAM4 SerDes configuration. for next-generation data center and cloud computing Flexible port configurations: 10GbE to 400GbE support environments. The BCM56980 architecture delivers with run-time reconfigurability (Flexport™). complete Layer 2 (L2) and Layer 3 (L3) switching and Oversubscription to maximize I/O throughput. routing capabilities with maximum port density, while Low pin-to-pin latency in cut-through and store-and-forward modes. consuming minimum power, latency, and board footprint. -
Chapter 12, “Configuring Layer 3 Interfaces”
CHAPTER 12 Configuring Layer 3 Interfaces This chapter contains information about how to configure Layer 3 interfaces on the Catalyst 6500 series switches, which supplements the information and procedures in the Release 12.1 publications at this URL: http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/index.htm This chapter consists of these sections: • Configuring IP Routing and Addresses, page 12-2 • Configuring IPX Routing and Network Numbers, page 12-6 • Configuring AppleTalk Routing, Cable Ranges, and Zones, page 12-7 • Configuring Other Protocols on Layer 3 Interfaces, page 12-8 Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E 78-14099-04 12-1 Chapter 12 Configuring Layer 3 Interfaces Configuring IP Routing and Addresses Note • For complete syntax and usage information for the commands used in this chapter, refer to the Catalyst 6500 Series Switch Cisco IOS Command Reference publication and the Release 12.1 publications at this URL: http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/index.htm • Release 12.1(13)E and later releases support configuration of 4,096 Layer 3 VLAN interfaces. – We recommend that you configure a combined total of no more than 2,000 Layer 3 VLAN interfaces and Layer 3 ports on an MSFC2 with either Supervisor Engine 1 or Supervisor Engine 2. – We recommend that you configure a combined total of no more than 1,000 Layer 3 VLAN interfaces and Layer 3 ports on an MSFC. • With releases earlier than Release 12.1(13)E, an MSFC2 with either Supervisor Engine 1 or Supervisor Engine 2 supports a combined maximum of 1,000 Layer 3 VLAN interfaces and Layer 3 ports. -
BRKCRS-2501.Pdf
BRKCRS-2501 Campus QoS Design - Simplified Roland Saville – Technical Leader Engineering Agenda • Campus QoS Design Considerations and Best Practices • Cisco Catalyst 2960-X / 3560-X / 3750-X QoS Design • Cisco Catalyst 9000 / 3850 / 3650 Series QoS Design • Cisco Catalyst 4500E QoS Design • Cisco Catalyst 6800 / 6500-E QoS Design • Meraki MS Series Switch QoS Design • Campus WLAN QoS Design Considerations and Best Practices • Cisco AireOS WLC AVC / QoS Design • Meraki MR Series AP QoS Design • What are we doing to make this simpler? • Summary and References BRKCRS-2501 © 2019 Cisco and/or its affiliates. All rights reserved. Cisco Public 3 Cisco Webex Teams Questions? Use Cisco Webex Teams (formerly Cisco Spark) to chat with the speaker after the session How 1 Find this session in the Cisco Events Mobile App 2 Click “Join the Discussion” 3 Install Webex Teams or go directly to the team space 4 Enter messages/questions in the team space cs.co/ciscolivebot#BRKCRS-2501 BRKCRS-2501 © 2019 Cisco and/or its affiliates. All rights reserved. Cisco Public 4 Campus QoS Design Considerations and Best Practices What Do You Consider First? BRKRST-2056: The QoS Paradigm Shift https://cisco.box.com/s/8izevlg4k6gaggh3cmrc16lugm6sdr8y https://www.ciscolive.com/online/connect/sessionDetail.ww?SESSION_ID=83633&backBtn=true BRKCRS-2501 © 2019 Cisco and/or its affiliates. All rights reserved. Cisco Public 6 Start by Defining Your QoS Strategy Articulate Your Business Intent, Relevant Applications and End-to-End Strategy https://cisco.app.box.com/v/QoS-AAGs -
C:\Andrzej\PDF\ABC Nagrywania P³yt CD\1 Strona.Cdr
IDZ DO PRZYK£ADOWY ROZDZIA£ SPIS TREFCI Wielka encyklopedia komputerów KATALOG KSI¥¯EK Autor: Alan Freedman KATALOG ONLINE T³umaczenie: Micha³ Dadan, Pawe³ Gonera, Pawe³ Koronkiewicz, Rados³aw Meryk, Piotr Pilch ZAMÓW DRUKOWANY KATALOG ISBN: 83-7361-136-3 Tytu³ orygina³u: ComputerDesktop Encyclopedia Format: B5, stron: 1118 TWÓJ KOSZYK DODAJ DO KOSZYKA Wspó³czesna informatyka to nie tylko komputery i oprogramowanie. To setki technologii, narzêdzi i urz¹dzeñ umo¿liwiaj¹cych wykorzystywanie komputerów CENNIK I INFORMACJE w ró¿nych dziedzinach ¿ycia, jak: poligrafia, projektowanie, tworzenie aplikacji, sieci komputerowe, gry, kinowe efekty specjalne i wiele innych. Rozwój technologii ZAMÓW INFORMACJE komputerowych, trwaj¹cy stosunkowo krótko, wniós³ do naszego ¿ycia wiele nowych O NOWOFCIACH mo¿liwoYci. „Wielka encyklopedia komputerów” to kompletne kompendium wiedzy na temat ZAMÓW CENNIK wspó³czesnej informatyki. Jest lektur¹ obowi¹zkow¹ dla ka¿dego, kto chce rozumieæ dynamiczny rozwój elektroniki i technologii informatycznych. Opisuje wszystkie zagadnienia zwi¹zane ze wspó³czesn¹ informatyk¹; przedstawia zarówno jej historiê, CZYTELNIA jak i trendy rozwoju. Zawiera informacje o firmach, których produkty zrewolucjonizowa³y FRAGMENTY KSI¥¯EK ONLINE wspó³czesny Ywiat, oraz opisy technologii, sprzêtu i oprogramowania. Ka¿dy, niezale¿nie od stopnia zaawansowania swojej wiedzy, znajdzie w niej wyczerpuj¹ce wyjaYnienia interesuj¹cych go terminów z ró¿nych bran¿ dzisiejszej informatyki. • Komunikacja pomiêdzy systemami informatycznymi i sieci komputerowe • Grafika komputerowa i technologie multimedialne • Internet, WWW, poczta elektroniczna, grupy dyskusyjne • Komputery osobiste — PC i Macintosh • Komputery typu mainframe i stacje robocze • Tworzenie oprogramowania i systemów komputerowych • Poligrafia i reklama • Komputerowe wspomaganie projektowania • Wirusy komputerowe Wydawnictwo Helion JeYli szukasz ]ród³a informacji o technologiach informatycznych, chcesz poznaæ ul. -
24-Port Gbe Multilayer Switch with Four 10 Gbe/Higig+™ Ports
BCM56514 ® Brief 24-PORT GBE MULTILAYER SWITCH WITH FOUR 10 GBE/HIGIG+™ PORTS FEATURES SUMMARY OF BENEFITS • Fifth generation of StrataSwitch® and StrataXGS® product lines • Highly scalable BroadScale™ processor evolved from five generations of switching experience provides rich features, • 24 10/100/1000 Mbps Ethernet ports supporting SGMII and scalability, and future-proof solutions. SerDes interfaces for both copper and fiber connections • Optimized for secure-switching and convergence of wired and • The BCM56514 device, is a powerful, highly integrated member of the scalable StrataXGS III product family wireless applications and services in networks • • 2.5 Gbps, 3 Gbps, 10 Gbps or 12 Gbps HiGig+ stacking ports Virtual chassis support with industry-leading high performance and feature-rich stacking capabilities. • Four 10-GbE switching ports with CX4 support • System vendors can build scalable high-performance, high-port • Line-rate switching for all packet sizes and conditions density GbE LAN switches in several form factors. • • On-chip data packet memory and table memory Multiple CoS and low latency enable the support of VoIP and triple play services. • IPv6 routing and tunneling • Built-in high-speed serial interfaces with Broadcom®-unique • Advanced ContentAware™ classification Filtering Processors (FP) SerDes technology ease and accelerate system design, while reducing cost and conserving board space. • Advanced security features in hardware • Broadcom switch API compatibility enables software reuse and • Port trunking and mirroring supported across stack faster time-to-market. • Advanced packet flow control: • Small package and low power enables cost-effective and high- • Head of line blocking prevention performance system design. • Backpressure support • Eight QoS queues per port with hierarchical minimum/maximum shaping per Classes of Service (CoS) per queue/per port • Standard compliant 802.1ad provider bridging • Compatible with BCM5708S, the industry's first 2.5 Gbps SerDes- based ToE solution. -
Upcoming Standards in Wireless Local Area Networks
Preprint: http://arxiv.org/abs/1307.7633 Original Publication: Wireless & Mobile Technologies, Vol. 1, Issue 1, September 2013. [DOI: 10.12691/wmt-1-1-2] Upcoming Standards in Wireless Local Area Networks Sourangsu Banerji Department of Electronics & Communication Engineering, RCC-Institute of Information Technology, India Email: [email protected] ABSTRACT: In this paper, we discuss some widely deployed WLAN technology as of today. of the upcoming standards of IEEE 802.11 i.e. Another renowned counterpart is the HiperLAN Wireless Local Area Networks. The WLANs standard by ETSI. These two technologies are united underneath the Wireless Fidelity (Wi-fi) nowadays provide unlimited broadband usage alliance. In literature though, IEEE802.11 and Wi- to users that have been previously offered fi is used interchangeably and we will also simply to wireline users within a limited range. continue with the same convention in this The newest and the emerging standards fix particular paper. A regular WLAN network is technology issues or add functionality to the associated with an Access Point (AP) in the centre existing IEEE 802.11 standards and will be and numerous stations (STAs) are connected to this central Access Point (AP).There are just two expected to overcome many of the current modes in which communication normally takes standing problems with IEEE 802.11. place. Keywords: Wireless Communications, IEEE Within the centralized mode of communication, 802.11, WLAN, Wi-fi. communication to/from a STA is actually carried across by the APs. There's also a decentralized 1. Introduction mode in which communication between two STAs The wireless broadband technologies were can happen directly without the requirement developed with the objective of providing services associated with an AP in an ad hoc fashion. -
Notes-Cn-Unit-3
UNIT –0 3 ALOHA Unit-03/Lecture-01/ Lecture-02 Static Channel Allocation in LANs and MANs[RGPV/Jun 2010, Jun2014] Frequency Division Multiplexing - Frequency of one channel divided (usually evenly) among n users. Each user appears to have full channel of full frequency/n. Wastes bandwidth when user has nothing to send or receive, which is often the case in data communications. Other users cannot take advantage of unused bandwidth. Time Division Multiplexing - Time of one channel divided (usually evenly) among n users. Each user appears to have full channel for time/n. same problems as FDM. Analysis of Static Channel Allocation - Static allocation is intuitively a bad idea when considering that for an n divisions of a channel, any one user is limited to only 1/n channel bandwidth whether other users where accessing the channel or not. By limiting a user to only a fraction of the available channel, the delay to the user is increased over that if the entire channel were available. Intuitively, static allocation results in restricting one user to one channel even when other channels are available. Consider the following two diagrams, each with one user wanting to transmit 400 bits over a 1 bit per second channel. The left diagram would have a delay 4 times greater than the diagram on the right, delaying 400 seconds using 1 channel versus 100 second delay using the 4 channels. Static Allocation Dynamic Allocation One user with entire channel 1 channel per user up to 4 channels per user Generally we want delay to be small. -
Simulation of Inter-Vlan Routing Communication
CIKITUSI JOURNAL FOR MULTIDISCIPLINARY RESEARCH ISSN NO: 0975-6876 SIMULATION OF INTER-VLAN ROUTING COMMUNICATION K. SATHISH P.G. Student, Department of Computer Applications, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore Abstract: This Project work is totally primarily based upon VLAN technology. It’s a technology that is employed to logically divide the network into totally different broadcast domains. So the packets are delivered among the port of same VLAN cluster. Between VLAN directing method is a procedure which is utilized to permit diverse VLANs to impart. So as to impart we utilize switch interface or multilayer switches. All alternative switch ports connect with user devices, in order that they would wish to be organized as access ports. We have executed this Inter-VLAN steering ideas utilizing Packet Tracer Tool 6.0.1. Keywords- VLAN; Subinterface; Inter-VLAN; VLAN ID; Access mode; Trunk mode I. INTRODUCTION: The VLAN technology functions square measure accustomed phase the network into totally different broadcast domains. The packets were delivered between ports with a similar VLAN cluster member. VLANs divide broadcast domains during a computer network setting. Whenever hosts in one VLAN have to be compelled to communicate with hosts in another VLAN, the traffic should be routed between them. This can be referred to as inter-VLAN routing. On Catalyst switches it's accomplished by the creation of Layer three interfaces (switch virtual interfaces (SVIs) ). Inter-VLAN routing is employed to allow totally different VLANs to speak. Totally different router interface configurations facilitate inter-VLAN routing. VLAN may be a distinctive broadcast domain. -
Token Bus Occur in Real‐Time with Minimum Delay, and at the Same Speed As the Objects Moving Along the Assembly Line
Introduction • LANs have a direct application in factory automation and process control, where nodes are computers controlling the manufacturing Chap ter 12 process. • In this type of application, processing must Token Bus occur in real‐time with minimum delay, and at the same speed as the objects moving along the assembly line. 2 Introduction Introduction • Ethernet is not suitable for this purpose, • Token Bus is the solution to this type of because the number of collisions is not problem. predictable and delay in sending data from the • It combines the physical configuration of control center to the computers along the Ethernet (a bus topology) and the collision‐ assembly line is not a fixed value. free (predictable delay) feature of Token Ring. • Token Ring is not suitable either, because an • It is a physical bus operating as a logical ring assembly line resembles a bus topology and using tokens. not a ring topology. 3 4 Figure 12-1 Physical Versus Logical Topology A Token Bus Network • The logical ring is formed based on the physical address of the stations in descending order. • Each station considers the station with the immediate lower address as the next station and the station with the immediate higher address as the previous station. • The station with the lowest address considers the station with the highest address the next station, and the station with the highest address considers the station with the lowest address the previous station. 5 6 Token Passing Token Passing • To control access to the shared medium, a • After sending all its frames or after the time small token frame circulates from station to period expires (whichever comes first), the station in the logical ring.