Interview Questions.

Question 1. What Is Dsl?

Answer :

DSL stands for Digital Subscriber Line. It is a copper loop transmission era that satisfies bottleneck problem frequently related to the ultimate mile between the community and service carriers.

Question 2. What Are The Benefits Of Dsl?

Answer :

Fast Access - DSL allows you to get admission to the Internet up to 35 times faster than a 28.8k dial-up modem. This method net websites will seem a great deal quicker, mainly people with massive pictures. Your e-mail will arrive and be despatched plenty faster, and superior enterprise programs are feasible, like web hosting and e-commerce.

Always On - DSL is a dedicated provider, which means it is constantly on, so there's no need to dial up to hook up with the Internet. No greater busy indicators and no greater waiting to connect. Simply click a computer icon and you are online.

Inexpensive - DSL offers excessive-pace Internet access at a fragment of the value of other committed services, such as a T-1 line. T-1 traces can fee over $1,000 in keeping with month, whilst DSL is priced in order that small and medium-sized businesses can manage to pay for to buy it.

Networking Interview Questions
Question three. What Do You Understand By "attenuation" In Dsl Technology?

Answer :

The dissipation of the energy of a transmitted signal because it travels over the copper twine line. In-domestic wiring also contributes to attenuation.

Question four. What Is Meant By Upstream And Downstream?

Answer :

Downstream method downloading facts from the Internet to your computer. Information travels downstream whilst an internet web page is loading to your computer display, otherwise you open email messages that someone despatched you.

Upstream way sending statistics out of your laptop to the Internet. Information travels upstream while sending electronic mail messages, web hosting a web server, imparting video streaming, or retaining a video convention. If you've got ever attempted to send an e mail with a massive attachment, like photographs, massive spreadsheets, or digital displays you recognize how a sluggish upstream connection can really slow down your enterprise.

Networking Tutorial
Question 5. What Do You Understand By "bridged Taps" In Dsl Technology?

Answer :

These are unterminated extensions of the loop, which motive additional loop loss with loss peaks surrounding the frequency of the area wavelength of the extension length.

Network Security Interview Questions
Question 6. Why Should I Use Syix.Com Instead Of My Phone Or Cable Company?

Answer :

There are many blessings to the use of SYIX.COM over different alternatives. SYIX.COM DSL has been presenting Internet Access as a Primary business in view that 1995 - It's what we do! We do not try to provide you different services along with pay per view films or lengthy distance services. When we recognition on one factor we can offer a degree of provider you may now not get someplace else. This is the non-public level of carrier. When You name SYIX.COM you will have your name spoke back by using a real man or woman. Our tech help team has the experience to have the ability that will help you. Are committed to providing the highest pleasant DSL provider to our clients.

SYIX.COM specializes in providing Internet carrier.
In addition to residential ADSL carrier SYIX.COM offers a true enterprise class SDSL provider. Most neighborhood telephone companies consciousness only on ADSL carrier for residential customers.
SYIX.COM video display units their network 24x7, because of this our customers benefit from high-quality provider. 
End-users can expect SYIX.COM DSL to work once they need it, with out stressful about community downtime or terrible nice carrier.
Question 7. What Is "move Talk" In Dsl Technology?

Answer :

The interference between two wires in the equal package deal, caused by the electrical strength carried with the aid of every of them.

Network Security Tutorial Automobile Engineering Interview Questions
Question eight. Do I Need To Upgrade My Computer To Use Dsl?

Answer :

A Network Interface Card (NIC or Ethernet card) have to be set up on your pc. A simple 10BaseT Ethernet NIC will work. Once the NIC is mounted it provides a (rj45) jack on the again of the computer permitting you to attach your new DSL modem or router to the laptop.

Question 9. Explain Dsl Home?

Answer :

DSL Home is an initiative taken via DSL-Forum. To define necessities associated with home devices like residential gateways, VoIP gadgets and local & far flung control of home gadgets.

Broadcast Interview Questions
Question 10. Does Dsl Require Special Equipment?

Answer :

Yes. DSL calls for that the purchaser use a special DSL bridge or router (modem - cpe). SYIX.COM sells the DSL Bridge or router you need to get related to DSL. There are extraordinary options available based totally at the kind of service you purchase.

Internet Protocol version 6 (IPv6) Tutorial
Question eleven. Which Services Can Be Enabled By Dsl Home?

Answer :

Voice, video, facts, which includes IPTV, video on demand, content material on call for, and many others...

Domain Name System(DNS) Interview Questions
Question 12. Which Protocol Is Used For Dsl Remote Management?

Answer :

DSL Home far off management protocol (TR-69) and its extensions are get entry to agnostic.

Networking Interview Questions
Question thirteen. What If I Want To Upgrade My Dsl Connection To A Faster Speed?

Answer :

Call us and we can propose you of options at your vicinity. Normally, you will be able to upgrade to a better speed provider with no need to improve your equipment.

For instance: the gadget used for 192 Kbps SDSL is the equal system used for 1.1 Mbps DSL. However, IDSL, ADSL, and SDSL gadget isn't always cross useful (an ADSL router would no longer paintings on an SDSL line).

Mobile computing Tutorial
Question 14. Which Protocol Is Used For Dsl Local Management?

Answer :

The TR64 protocol is used for DSL nearby management.

Question 15. How Does Dsl Compare To fifty six Kbps Analog Modems?

Answer :

DSL is extensively quicker than a 56 Kbps modem. Also, DSL is always on so there may be no need to dial up to connect to the Internet. And because the connection is devoted you may be able to host an internet server while this isn't always possible with a dial-up connection. DSL additionally makes it clean to attach a couple of computers to at least one excessive-speed line to share the rate on that line amongst a whole workplace.

Network Engineer Interview Questions
Question 16. What Do You Understand By Tr 111?

Answer :

TR 111 allows TR sixty nine far off control for the gadgets inside the Home Network (HN).

Question 17. How Does Dsl Compare To Cable Modems?

Answer :

Although cable may be appealing because of its charge, there are some inherent drawbacks to cable modem carrier. First, the cable network is shared, because of this as the variety of cable customers will increase the velocity on each man or woman's line decreases. Second, a shared network is inherently much less at ease than a committed service like DSL, as neighboring cable customers can more without difficulty intercept statistics or hack into some other user's laptop. Third, the upstream speed on a cable modem is typically no better than 128 Kbps. Thus, cable modems are unable to provide suitable ranges of pace or security for business functions.

Voice Over Internet Protocol (VOIP) Interview Questions
Question 18. Explain Tr98 And Tr133?

Answer :

TR-ninety eight and TR-133: Configuration and Management of Service differentiation (QoS) parameters within the CPE gadgets via TR-69 and TR-sixty four respectively.

Network Security Interview Questions
Question 19. How Does Dsl Compare To A T-1 Line?

Answer :

T-1 strains provide get right of entry to speeds of 1.544 Mbps. The choice between DSL and T-1 get admission to when DSL is simply available is a straightforward one because of pricing. Normally, for the same high bandwidth get admission to, a business pays notably greater each month for a T-1 line than it'd for DSL. Additionally, set up of a T-1 line is typically far greater costly than set up and setup of DSL services.

Question 20. What Is Purpose Of Tr-104, Tr-106, Tr-122, Wt-135, Wt-one hundred forty, And Wt-142 Protocols?

Answer :

TR-104 Data version for VoIP services is available for Video offerings too.
TR-106 defines the common records version template. Defines the baseline item structure and set of handy parameters for a TR-sixty nine device.
TR-122 defines Voice ATA Requirements.
WT-135 is the object version for the STB tool.
WT-140 is the Object Model Network Storage Device.
WT-142 is the framework for TR-069 enabled PON device.
Internet Protocol model 6 (IPv6) Interview Questions
Question 21. How Does Dsl Compare To Isdn?

Answer :

DSL will be the purpose of ISDN's death for several reasons:

ISDN is only available in two speeds: sixty four Kbps and 128 Kbps, each of which might be substantially slower than maximum DSL connections.
ISDN now and again gives devoted, constantly-on get right of entry to however not continually. Often, ISDN is challenge to extra in line with-minute costs. Monthly ISDN prices can without problems be inside the loads of greenbacks.
DSL is easier and less high priced to install than ISDN.
Question 22. What Type Of Backbone Equipment Are You Using To Provide Dsl Service?

Answer :

SYIX.COM uses an ATM (Asynchronous Transfer Mode) backbone and a DSLAM (Digital Subscriber Line Access Multiplexer) to supply your service. This equipment is located in Telephone Company Central Offices the DSLAM is synthetic through New Bridge.

Question 23. What Are The Services Offered By Dsl Home- Tr-sixty nine?

Answer :

The following offerings are offered via DSL Home TR-69:−

Remote management of the gadgets in a secure way (uses SSL/TLS based totally security)
Real-time provisioning of offerings through auto-configuration
Status and overall performance monitoring
Diagnostics
Access Control
Notification
Firmware improve
Mobile computing Interview Questions
Question 24. What Are The Services Offered By Tr-064?

Answer :

The following services are offered by using TR-064:

Adopts the UPnP v1.Zero structure and extends the UPnP IGD v1 specification (with some restrictions).
A control utility (TR-64 control point) runs on a PC and it pushes the service company and the patron specific configuration to a CPE. This takes place when the CPE adds to the network.
More useful at some stage in the initial installation of recent CPE devices and when there's WAN side connectivity problems.
Automobile Engineering Interview Questions
Question 25. Difference Between Tr69 And Snmp?

Answer :

SNMP stands for Simple Network Management Protocol. Use of SNMP requires starting of SNMP port via NAT as maximum of the house gateways use NAT and the devices being controlled can be at the back of NAT. In SNMP, the request to get/set any parameters is constantly initiated via the supervisor subsequently the port needs to be opened at the CPE to get the request. In TR-69, a TR-sixty nine session is initiated through CPE and the server makes use of the identical session to ship get/set requests. That does away with establishing of the port explicitly in NAT environment.

TR-sixty nine also defines a manner in which ACS can send the request to CPE and this component is taken care with the aid of TR-111 part2 transparently. Most of the SNMP implementations current nowadays do now not enforce SNMPv3, for this reason the messages exchanged over SNMP isn't very comfortable. In TR-69, the security is taken care thru the SSL/TLS or HTTP based authentication schemes. Most of the TR-sixty nine implementations as of today put in force SSL/TLS.

Question 26. What Are The Components Of The Dsl System?

Answer :

Following are the components of the DSL System:

Transport device
Local Access Network
Multi Service DSLAM
DSL Modem/ Router
POTS Splitters and Micro filters
Mobile Developer Interview Questions
Question 27. Explain The Local System In A Dsl System?

Answer :

The neighborhood get entry to network makes use of inter-CO nearby provider network as a foundation. To offer connectivity among more than one provider providers and users of a couple of services, additional hardware may be required. Frame Relay switches, ATM switches and / or routers can be provisioned in the access community for this cause.

Increasingly, ILECs and PTO are searching out ATM device to fulfill this position, and next era DSLAM encompass ATM switching to perform it.

Broadcast Interview Questions
Question 28. Explain The Multi Service Dslam In Dsl System?

Answer :

Residing inside the CO environment (or in a space of near digital collocation), the DSLAM is the cornerstone of DSL solution. Functionally, the DSLAM concentrates the statistics visitors from more than one DSL loops on the bottom community for connection to the relaxation of the network.

The DSLAM provides backhaul offerings for the packet, cell and / or circuit-primarily based applications thru concentration DSL ON 10Base-T strains, 100Base-T, T1 / E1, T3 / E3 ATM or outputs.

Question 29. Explain The Dsl Modem/ Router In Dsl System?

Answer :

The criterion for evaluation modem / DSL Router is the customer website online device to connect the provider user to DSL loop. The end point of DSL is typically 10/100Base-T, V.35, ATM, or T1 / E1, with new generations of purchaser merchandise additionally support methods together with USB, IEEE 1394 (Fire wire) and issue internal PCI form.

Additionally, CPE parameters are being evolved with extra ports designed to assist specific packages, including RJ11 ports for aid of voice (for e.G. IADs for provider VoDSL), ports Video for video offerings based totally on DSL, and new networking interfaces which includes Home Phone line Networking Alliance (HomePNA) or wireless network together with 802.11 wireless Ethernet interfaces.

Virtual Private Network (VPN) Interview Questions
Question 30. Explain The Pots Splitter In Dsl System?

Answer :

POTS splitters alternative lie in each CO and service user’s slots, allowing the copper loop to be used for media transmission concurrently for DSL high-speed statistics and the unmarried line telephone service, when the DSL version used these services.

Question 31. Explain The Micro Filter In Dsl System?

Answer :

Micro filter out is a filter out "low skip" that permits voice-band offerings to be transmitted whilst filtering the high frequencies utilized by DSL and eliminates interference.

Question 32. What Do You Understand By The Adsl Technology?

Answer :

The following factors give an explanation for what ADSL generation is:−

Discrete Multi-Tone (DMT) modulation used by all ADSL standards for bodily layer.
Divide the frequency band into many small channels.
QAM modulation on each channel.
Different bits assigned to each channel in phrases of SNR.
Dns Server Interview Questions
Question 33. What Do You Understand By The Radsl Standards?

Answer :

The running Group T1E1 ANSI established a fashionable referred to as ANSI TR59 RADSL. The FCC has mainly mentioned RADSL as a generation that is spectrally compatible with voice and other DSL technology inside the nearby loop.

Domain Name System(DNS) Interview Questions
Question 34. What Do You Understand By The Multimate Symmetric Dsl?

Answer :

Beyond the bandwidth of 144 Kbps furnished by IDSL, there are new technologies which have emerged that may be higher-categorised office / small workplace and residential home (SOHO) possibilities. These technology offer operating levels between 128 Kbps and a couple of.048 Mbps.

For symmetric packages, MultiMate SDSL (M / SDSL) has emerged as a precious technology to satisfy the necessities of carriers to deliver Time Division Multiple (TDM) offerings on an nearly ubiquitous base. Based at the single pair SDSL generation, M / SDSL supports converting charge of command line transceiver and accordingly the working distance of the transceiver.

This version of the CAP helps 8 separate costs for a service sixty four Kbps / 128 Kbps to 29 kft (eight.9 km) 24-gauge wires (5mm) and 15 kft (4.5 km) at a pace of two Mbps in complete. With a potential of AutoRate (much like RADSL), symmetric packages can now be universally deployed.

Question 35. What Are The Benefits Of Reach Dsl (rdsl)?

Answer :

Following are the advantages of RDSL:−

No POTS splitter is needed at the consumer premises.
In addition to ADSL systems, which can typically attain distances beneath 18 000 ft from the significant office, the Reach DSL structures make bigger properly beyond services 20,000 toes, with some strength flora above 30 000 feet.
Lower product fee – Since ReachDSL products make use of "off the shelf" in place of custom designed Digital Signal Processors (DSPs).
Dynamic bandwidth allocation – Allows the carrier to be custom designed for distinct applications.
Question 36. What Are The Benefits Of Adsl2?

Answer :

Following are the advantages of ADSL2:−

ADSL offers up to 8Mbps/800Kbps records price (possibly 12M/1.2M)
Reach of 18-20 kf 26 AWG (approximately 6000m)
No seamless charge alternate
No electricity saving mode whilst there's no user hobby
No 1-bit according to bin and partial byte according to image
Fixed 64Kbps overhead channel rate (Framing Structure three)
Network Engineer Interview Questions
Question 37. What Are The Benefits Of Adsl2+?

Answer :

Following are the benefits of ADSL2+:−

ADSL2+ presents as much as 24Mbps/1Mbps facts price
Seamless price model while SNR trade
Power Management substantially lessen power intake
1-bit in step with bin and partial byte in step with symbol improves attain
Reach of 20-22kf 26AWG (about 7000m)
Variable overhead channel fee meets person need
Loop diagnostic function for the duration of schooling
Question 38. Explain The Benefits Of Adsl2/2+?

Answer :

ADSL2 and ADSL2+ supply subsequent generation capabilities to enhance the DSL deployment commercial enterprise case:−

Higher Rates
Extended Reach
Improved Stability
Power Management
Enhanced Spectral Compatibility
Question 39. Explain The Features Of Adsl2+?

Answer :

The following points provide an explanation for the capabilities of ADSL2+:−

Doubles downstream spectrum from 1.1MHz to 2.2 MHz with downstream bin variety increased from 256 to 512.
Maximum downstream statistics price increase from 8Mbps to 24Mbps.
Improved performance at short loop duration (more in this under Spectrum Management topic).
Wider range for SRA and Power Management - from 32Kbps to 24Mbps.
Question 40. What Do You Understand By The Vdsl Access Technology?

Answer :

VDSL stands for Very High Bit Rate Digital Subscriber Line. It is the generation that has the very best charge of DSL. Operating at hurries up to 52Mbps, VDSL is the next generation of DSL technology with better throughput and necessities for imposing less complicated than ADSL.

VDSL started its existence being known as VDSL, however become renamed VDSL with the aid of the ANSI operating organization T1E1.Four. The most important reason T1E1.Four determined VDSL on ADSL changed into that, not like ADSL, VDSL is both symmetric and asymmetric. VDSL is sort of ten instances faster than ADSL and is over thirty times quicker than HDSL. The tradeoff for elevated speed loop length: VDSL has a shorter reach inside the loop.

Voice Over Internet Protocol (VOIP) Interview Questions
Question forty one. What Do You Understand By Asymmetric Vdsl?

Answer :

VDSL is designed to provide a multitude of asymmetric broadband offerings, which includes digital tv broadcasting, video on call for (VoD), excessive-pace Internet get right of entry to, distance mastering and telemedicine, to name some.

The shipping of those services calls for the downstream channel to have a higher bandwidth that the channel upstream and is asymmetrical. For example, HDTV calls for 18 Mbps for video content downstream. Upstream, however, it does not require the transmission of signaling statistics (e.G., exchange of channel or application selection), that is of the order of kbps.

Question forty two. What Do You Understand By Symmetric Vdsl?

Answer :

VDSL is likewise designed to offer symmetrical services for small and medium business customers, business corporation, excessive-speed information packages, video conferencing and tele-packages, and so on. Symmetric VDSL can be used to offer short-haul T1 replacements NXT1 charge and supports a number of other commercial enterprise applications.

Internet Protocol model 6 (IPv6) Interview Questions
Question forty three. What Are The Key Features Of Vdsl?

Answer :

Following are the key functions of VDSL2.

DMT modulation:−

Same as ADSL
Bandwidth expanded from 30 MHz (14x ADSL2+)
Up to 4096 tones (8x ADSL+!)
Worldwide Versatile Standard:−

eight Profiles defined for specific offerings
Different band plans for one of a kind regions
Variety of PSDs to optimize spectral compatibility
Support for a ramification of Services:−

Integrated Quality of Service features
ATM in addition to Ethernet payload
Channel bonding for prolonged reach or charge
Question 44. What Do You Understand By Dmt?

Answer :

Discrete Multi-Tone (DMT) is a method of keeping apart a Digital Subscriber Line (DSL) signal, in order that the usable frequency variety is separated into 256 frequency bands (or channels) of four.3125 KHz every.