Which two responses are examples of client error responses in SIP protocol? (Choose two.)
A. 302 Moved Temporarily
B. 404 Not Found
C. 503 Service Unavailable
D. 502 Bad Gateway
E. 604 Does Not Exist Anywhere
F. 408 Request Timeout
Answer: BF
Friday, 4 October 2019
Sunday, 7 October 2018
Better Buy: Arista Networks, Inc. vs. Juniper Networks
Arista Networks (NYSE:ANET) and Juniper Networks (NYSE:JNPR) are often overshadowed by Cisco (NASDAQ:CSCO) in the networking hardware market. But over the past three years, Arista's stock has surged more than 300% -- compared to Cisco's 90% gain and Juniper's anemic 10% growth.
Let's see why Arista constantly outperformed its industry peers as Juniper remained a laggard and whether that trend will continue in the future.
The key differences between Arista and Juniper.
Arista sells network switches that are optimized for software defined network (SDN) solutions. This means that their switches are less powerful than traditional Cisco switches, but they are cheaper and depend on their cloud-based EOS platform to do the heavy lifting. Arista also offers an open source version of EOS for "white box" networks, which use generic hardware.
SDN solutions and white box networks are cheaper, more flexible and more scalable than the hardware and software packages of companies such as Cisco, which ensure enterprise customers all-in-one solutions. Arista also believes that it can completely replace traditional routers with its FlexRoute software.
Juniper sells mainly traditional routers and switches. But like Arista, Juniper also expanded to the cloud market with its QFX switches for data centers. He also introduced new SDN solutions and launched optimized routers for SDN.
However, Juniper's transition from more expensive hardware to cheaper cloud-based hardware accelerated the growth of its revenue and profits in recent years. Meanwhile, the increase in virtualization (which requires less network hardware on the site), the growth of SDN players like Arista and the increasing adoption of white-box hardware exacerbated the pain.
How fast are Arista and Juniper growing?
Arista's participation in the global exchange market increased from 5.5% to 6.6% between the second quarter of 2017 and 2018, according to IDC. The firm contributed that growth to Arista's growth in hyperscale markets and public cloud providers. The company does not sell traditional routers.
During the same period, Juniper's share in the switching market fell from 4.3% to 3.8%. Their participation in the market of business routers and service providers also decreased from 14.6% to 12.8%. It seems that the company is getting lost in the confusion between the hardware players of larger traditional networks like Cisco and Huawei on one end, and the disruptive SDN players like Arista on the other.
That's why Arista's revenue and earnings growth consistently outpaced Juniper's numbers over the past year.
Let's see why Arista constantly outperformed its industry peers as Juniper remained a laggard and whether that trend will continue in the future.
The key differences between Arista and Juniper.
Arista sells network switches that are optimized for software defined network (SDN) solutions. This means that their switches are less powerful than traditional Cisco switches, but they are cheaper and depend on their cloud-based EOS platform to do the heavy lifting. Arista also offers an open source version of EOS for "white box" networks, which use generic hardware.
SDN solutions and white box networks are cheaper, more flexible and more scalable than the hardware and software packages of companies such as Cisco, which ensure enterprise customers all-in-one solutions. Arista also believes that it can completely replace traditional routers with its FlexRoute software.
Juniper sells mainly traditional routers and switches. But like Arista, Juniper also expanded to the cloud market with its QFX switches for data centers. He also introduced new SDN solutions and launched optimized routers for SDN.
However, Juniper's transition from more expensive hardware to cheaper cloud-based hardware accelerated the growth of its revenue and profits in recent years. Meanwhile, the increase in virtualization (which requires less network hardware on the site), the growth of SDN players like Arista and the increasing adoption of white-box hardware exacerbated the pain.
How fast are Arista and Juniper growing?
Arista's participation in the global exchange market increased from 5.5% to 6.6% between the second quarter of 2017 and 2018, according to IDC. The firm contributed that growth to Arista's growth in hyperscale markets and public cloud providers. The company does not sell traditional routers.
During the same period, Juniper's share in the switching market fell from 4.3% to 3.8%. Their participation in the market of business routers and service providers also decreased from 14.6% to 12.8%. It seems that the company is getting lost in the confusion between the hardware players of larger traditional networks like Cisco and Huawei on one end, and the disruptive SDN players like Arista on the other.
That's why Arista's revenue and earnings growth consistently outpaced Juniper's numbers over the past year.
Friday, 2 March 2018
Cisco 400-051 Question Answer
Which SIP response is considered a final response?
A. 183 Session in Progress
B. 199 Early Dialog Terminated
C. 200 OK
D. 180 Ringing
E. 100 Trying
Answer: C
Which two SDP content headers can be found in a SIP INVITE message? (Choose two.)
A. Expires
B. Contact
C. Connection Info
D. Media Attributes
E. Allow
F. CSeq
Answer: CD
A. 183 Session in Progress
B. 199 Early Dialog Terminated
C. 200 OK
D. 180 Ringing
E. 100 Trying
Answer: C
Which two SDP content headers can be found in a SIP INVITE message? (Choose two.)
A. Expires
B. Contact
C. Connection Info
D. Media Attributes
E. Allow
F. CSeq
Answer: CD
Monday, 1 January 2018
Cisco 400-051 Question Answer
To which SIP response class do the SIP response codes 300 to 399 belong?
A. Provisional
B. Client Failure
C. Server Failure
D. Successful
E. Redirection
Answer: E
Which SIP request method enables reliability of SIP 1xx response types?
A. ACK
B. PRACK
C. OPTIONS
D. CANCEL
E. REGISTER
Answer: B
A. Provisional
B. Client Failure
C. Server Failure
D. Successful
E. Redirection
Answer: E
Which SIP request method enables reliability of SIP 1xx response types?
A. ACK
B. PRACK
C. OPTIONS
D. CANCEL
E. REGISTER
Answer: B
Thursday, 14 September 2017
Cisco 400-051 Question Answer
Which device is the initiator of a StationInit message in a Cisco Unified Communications Manager SDI trace?
A. Cisco Unified Communications Manager
B. MGCP gateway
C. Cisco Music on Hold server
D. SCCP IP phone
E. SIP Proxy Server
Answer: D
You received this debug output to troubleshoot a Cisco IOS MGCP gateway problem at a customer site. Which statement about this endpoint on the Cisco MGCP gateway is true?
A. This endpoint is on a T1 Controller 0/1/0.
B. This endpoint is on an E1 Controller 0/1/0.
C. This endpoint is on a T1 Controller 0/1/1.
D. This endpoint is on an E1 Controller 0/1/2.
E. This endpoint is on an T1 Controller 0/1/2.
Answer: A
A. Cisco Unified Communications Manager
B. MGCP gateway
C. Cisco Music on Hold server
D. SCCP IP phone
E. SIP Proxy Server
Answer: D
You received this debug output to troubleshoot a Cisco IOS MGCP gateway problem at a customer site. Which statement about this endpoint on the Cisco MGCP gateway is true?
A. This endpoint is on a T1 Controller 0/1/0.
B. This endpoint is on an E1 Controller 0/1/0.
C. This endpoint is on a T1 Controller 0/1/1.
D. This endpoint is on an E1 Controller 0/1/2.
E. This endpoint is on an T1 Controller 0/1/2.
Answer: A
Monday, 12 June 2017
In Another Blow to NVIDIA, AMD Sets Its Sights on the High-End GPU Market
Advanced Micro Devices (NASDAQ: AMD) has made great progress in the graphics processing unit (GPU) market in recent months by taking part of NVIDIA (NASDAQ: NVDA). In fact, AMD grew its share of 20% in 2015 to 28% in 2016, seeing a large increase in sales of mid-range GPUs priced below $ 299, according to Mercury Research estimates.
Analysts, however, are now worried about profit margins, as gains from the company's market share come mostly from (price) hanging fruits. But investors should note that the company is targeting the upper end of the market with its next-generation GPU platform - the Vega.
Why AMD wants to go high-end?
Internal company estimates suggest that the high-end GPU market represents less than 15% of sales, but represents two-thirds of margins. The company failed to penetrate this segment with the Polaris GPUs, which are mainly aimed at mid-range desktop computers and below.
Therefore, the company is losing in the most lucrative segment of the GPU market, but believes that the Vega will help address this opportunity.
Bringing the game to NVIDIA
NVIDIA dominates the high-end GPU market, but AMD believes that its Vega GPUs are capable enough to compete against its rival's premium offerings. As a result, test results from the Baidu DeepBench Open Source benchmark indicate that the Vega can outperform the NVIDIA P100 Tesla GPU in auto-learning applications by a fair margin.
Now, NVIDIA claims that the Tesla P100 is one of its most advanced GPUs, with specifications to substantially increase the computing power of a data center, while reducing costs by 60% simultaneously. NVIDIA's Tesla GPUs have already made significant strides in the cloud computing market, with users like Microsoft and Tencent using them to advance their artificial intelligence capabilities.
But AMD can make a dent in this market if Vega manages to surpass NVIDIA's first-line offer in independent machine intelligence testing. In addition, AMD leaves nothing to chance as it has launched a number of open source software solutions for developers to take advantage of their GPU accelerators.
The company's Radeon Open Compute platform is designed to support a variety of AI frameworks including Facebook's Caffe and Google's TensorFlow machine learning library, among others. As such, it will not be surprising that the cloud computing GPU market plays a critical role in driving AMD's results, especially since cloud data center workloads could grow 26% annually up 2020.
The possible financial impact
AMD believes that its expansion in high-end markets such as cloud computing and machine intelligence will increase profit over time. The company expects gross margin to reach 36% in 2018, up from 31% last year. In addition, AMD expects further expansion of its margins - up to 40% or more - by 2020 due to improved product mix.
Of course, whether or not the company will enjoy this increased profitability depends on how their new products work in the real world. But as something to keep investors optimistic, AMD estimates that the data center market alone will be a $ 21 billion opportunity in just a few years.
Investors will have to wait until the end of this year before the launch of the new Vega GPU. If AMD can offer you an attractive offer to tackle the next generation of cloud computing, your top and bottom lines will get you shot in the arm by capturing only a small portion of this thriving market.
Analysts, however, are now worried about profit margins, as gains from the company's market share come mostly from (price) hanging fruits. But investors should note that the company is targeting the upper end of the market with its next-generation GPU platform - the Vega.
Why AMD wants to go high-end?
Internal company estimates suggest that the high-end GPU market represents less than 15% of sales, but represents two-thirds of margins. The company failed to penetrate this segment with the Polaris GPUs, which are mainly aimed at mid-range desktop computers and below.
Therefore, the company is losing in the most lucrative segment of the GPU market, but believes that the Vega will help address this opportunity.
Bringing the game to NVIDIA
NVIDIA dominates the high-end GPU market, but AMD believes that its Vega GPUs are capable enough to compete against its rival's premium offerings. As a result, test results from the Baidu DeepBench Open Source benchmark indicate that the Vega can outperform the NVIDIA P100 Tesla GPU in auto-learning applications by a fair margin.
Now, NVIDIA claims that the Tesla P100 is one of its most advanced GPUs, with specifications to substantially increase the computing power of a data center, while reducing costs by 60% simultaneously. NVIDIA's Tesla GPUs have already made significant strides in the cloud computing market, with users like Microsoft and Tencent using them to advance their artificial intelligence capabilities.
But AMD can make a dent in this market if Vega manages to surpass NVIDIA's first-line offer in independent machine intelligence testing. In addition, AMD leaves nothing to chance as it has launched a number of open source software solutions for developers to take advantage of their GPU accelerators.
The company's Radeon Open Compute platform is designed to support a variety of AI frameworks including Facebook's Caffe and Google's TensorFlow machine learning library, among others. As such, it will not be surprising that the cloud computing GPU market plays a critical role in driving AMD's results, especially since cloud data center workloads could grow 26% annually up 2020.
The possible financial impact
AMD believes that its expansion in high-end markets such as cloud computing and machine intelligence will increase profit over time. The company expects gross margin to reach 36% in 2018, up from 31% last year. In addition, AMD expects further expansion of its margins - up to 40% or more - by 2020 due to improved product mix.
Of course, whether or not the company will enjoy this increased profitability depends on how their new products work in the real world. But as something to keep investors optimistic, AMD estimates that the data center market alone will be a $ 21 billion opportunity in just a few years.
Investors will have to wait until the end of this year before the launch of the new Vega GPU. If AMD can offer you an attractive offer to tackle the next generation of cloud computing, your top and bottom lines will get you shot in the arm by capturing only a small portion of this thriving market.
Tuesday, 2 May 2017
Cisco 400-051 Question Answer
Which two SCCP call signaling messages are initiated by Cisco Unified Communications Manager to an IP phone? (Choose two.)
A. SoftKeyEvent
B. CloseReceiveChannelAck
C. CallState
D. KeypadButton
E. OpenReceiveChannel
F. Offhook
Answer: CE
Which two SCCP call signaling messages are sent by an IP phone to Cisco Unified
Communications Manager? (Choose two.)
A. SoftKeyEvent
B. OpenReceiveChannelAck
C. StartMediaTransmission
D. SelectSoftKeys
E. CloseReceiveChannel
F. StopTone
Answer: AB
A. SoftKeyEvent
B. CloseReceiveChannelAck
C. CallState
D. KeypadButton
E. OpenReceiveChannel
F. Offhook
Answer: CE
Which two SCCP call signaling messages are sent by an IP phone to Cisco Unified
Communications Manager? (Choose two.)
A. SoftKeyEvent
B. OpenReceiveChannelAck
C. StartMediaTransmission
D. SelectSoftKeys
E. CloseReceiveChannel
F. StopTone
Answer: AB
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