After reviewing UDLD status on switch ports, an engineer notices that the.” Which statement describes what this indicates about the status of the port?
A. The port is fully operational and no known issues are detected.
B. The bidirectional status of “unknown” indicates that the port will go into the disabled state because it stopped receiving UDLD packets from its neighbor.
C. UDLD moved into aggressive mode after inconsistent acknowledgements were detected.
D. The UDLD port is placed in the “unknown” state for 5 seconds until the next UDLD packet is received on the interface.
Answer: A
Pilot testing of the new switching infrastructure finds that when the root port is lost, STP immediately replaces the root port with an alternative root port. Which spanning-tree technology is used to accomplish backup root port selection?
A. PVST+
B. PortFast
C. BackboneFast
D. UplinkFast
E. Loop Guard
F. UDLD
Answer: D
Tuesday 14 April 2020
Friday 4 October 2019
Cisco 300-115 Questions Answers
After UDLD is implemented, a Network Administrator noticed that one port stops receiving UDLD packets. This port continues to reestablish until after eight failed retries. The port then transitions into the errdisable state. Which option describes what causes the port to go into the errdisable state?
A. Normal UDLD operations that prevent traffic loops.
B. UDLD port is configured in aggressive mode.
C. UDLD is enabled globally.
D. UDLD timers are inconsistent.
Answer: B
A. Normal UDLD operations that prevent traffic loops.
B. UDLD port is configured in aggressive mode.
C. UDLD is enabled globally.
D. UDLD timers are inconsistent.
Answer: B
Sunday 7 October 2018
Cisco to showcase power of AI at GITEX Tech Week
At GITEX, Cisco presents its latest set of technologies to support the Middle East path towards digital transformation. At a time of increasing pressure to adopt digitalisation, these innovations aim to help public and private providers in the region adopt cloud-based solutions. Cisco will exhibit its technologies under the theme "Secure and Intelligent Platform for Digital Businesses" at GITEX 2018, from October 14 to 18, 2018, at the World Trade Center in Dubai.
"Recent technological advances have significantly improved the capabilities of machine learning and artificial intelligence systems (ML / AI). "As a broad category of techniques and solutions, ML / AI has found many attractive applications: from chat-bots in customer service to personalized advertising in smart stores, even self-driven smart transport," said Shukri Eid, Managing Director for East. Region, Cisco Middle East.
"Cisco is providing the basis for digitization. Through our unique and comprehensive understanding of the data, we have the opportunity to completely unleash the power of the network, obtain useful information, protect our customers and accelerate innovation. "ML / AI technologies are already playing a key role in delivering the secure intelligent platform for digital businesses," concluded Shukri Eid.
The Markets and Markets research firm estimates that the AI market will have a value of $ 5.05 billion by 2020. From the data centers to blockchain, AI, IoT and big data, the world is undergoing a paradigm shift to digitalization . ICT solutions with the cloud and business computing in the core are the basis of this digital transformation.
At GITEX, Cisco will take customers on a connected journey based on its secure and intelligent platform for digital businesses where digital innovations come to life through five pillars that include:
• Reinventing the network: due to digitization, networks are more important than ever, but they have never been under such pressure. The network industry is facing a new era due to the introduction of networks driven by intention. ML gives us the possibility to analyze large amounts of network data, from telemetry to traffic patterns, and understand what is an anomaly and what is an optimal network configuration. This results in a network based on intention, which is always learning, adapting and protecting. The network will redirect traffic on its own and be cured of internal shocks, such as device malfunction and external shocks, such as cyber attacks. The network based on Cisco's intention is the result of years of research and development to reinvent networks for the future.
• Drive a world of multiple clouds: Cisco brings together networks, security, analysis and administration, and offers cloud solutions that span a world of multiple clouds. Whether it's a private, hybrid or public cloud, or any combination of these, Cisco allows customers to adopt a multi-cloud world by simplifying the way customers connect and protect their clouds.
With the help of ML, we aim to provide a unique user experience through the clouds, including a policy and a security instance by learning user preferences and application performance on public and private cloud platforms , for trouble-free operation and without complications.
• Unlock the power of data: Cisco provides visibility into network data and focuses on providing data and information to support use cases ranging from infrastructure optimization to security threat intelligence. We offer our clients the ability to obtain value from the data that is executed in their network at the moment they have more value.
• Enabling the experience of employees and customers: Cisco collaboration technologies have the ability to connect people, teams and customers. AI is integrated into our collaboration portfolio and the experiences of our employees and customers through simplicity, automation and optimization, with full contextual knowledge of what is happening on the network.
• Incorporation of security in the fabric of the network: security is fundamental for everything we do ... from the cloud to the final point and the network. The more variables we can see, the more correlations we can draw through ML, and the faster we can detect something unusual that happens, investigate and quarantine the actors, applications or bad devices.
Monday 26 March 2018
Cisco 300-115 Question Answer
A network engineer tries to configure storm control on an EtherChannel bundle. What is the result of the configuration?
A. The storm control settings will appear on the EtherChannel, but not on the associated physical ports.
B. The configuration will be rejected because storm control is not supported for EtherChannel.
C. The storm control configuration will be accepted, but will only be present on the physical interfaces.
D. The settings will be applied to the EtherChannel bundle and all associated physical interfaces.
Answer: D
What is the function of NSF?
A. forward traffic simultaneously using both supervisors
B. forward traffic based on Cisco Express Forwarding
C. provide automatic failover to back up supervisor in VSS mode
D. provide nonstop forwarding in the event of failure of one of the member supervisors
Answer: D
A. The storm control settings will appear on the EtherChannel, but not on the associated physical ports.
B. The configuration will be rejected because storm control is not supported for EtherChannel.
C. The storm control configuration will be accepted, but will only be present on the physical interfaces.
D. The settings will be applied to the EtherChannel bundle and all associated physical interfaces.
Answer: D
What is the function of NSF?
A. forward traffic simultaneously using both supervisors
B. forward traffic based on Cisco Express Forwarding
C. provide automatic failover to back up supervisor in VSS mode
D. provide nonstop forwarding in the event of failure of one of the member supervisors
Answer: D
Friday 2 March 2018
Cisco 300-115 Question Answer
An access switch has been configured with an EtherChannel port. After configuring SPAN to monitor this port, the network administrator notices that not all traffic is being replicated to the management server. What is a cause for this issue?
A. VLAN filters are required to ensure traffic mirrors effectively
B. SPAN encapsulation replication must be enabled to capture EtherChannel destination traffic.
C. The port channel can be used as a SPAN source, but not a destination.
D. RSPAN must be used to capture EtherChannel bidirectional traffic.
Answer: C
What is the result of the configuration?
A. The EtherChannels would not form because the load-balancing method must match on the devices.
B. The EtherChannels would form and function properly even though the load-balancing and EtherChannel modes do not match.
C. The EtherChannels would form, but network loops would occur because the load-balancing methods do not match.
D. The EtherChannels would form and both devices would use the dst-ip load-balancing method because Switch1 is configured with EtherChannel mode active.
Answer: B
A. VLAN filters are required to ensure traffic mirrors effectively
B. SPAN encapsulation replication must be enabled to capture EtherChannel destination traffic.
C. The port channel can be used as a SPAN source, but not a destination.
D. RSPAN must be used to capture EtherChannel bidirectional traffic.
Answer: C
What is the result of the configuration?
A. The EtherChannels would not form because the load-balancing method must match on the devices.
B. The EtherChannels would form and function properly even though the load-balancing and EtherChannel modes do not match.
C. The EtherChannels would form, but network loops would occur because the load-balancing methods do not match.
D. The EtherChannels would form and both devices would use the dst-ip load-balancing method because Switch1 is configured with EtherChannel mode active.
Answer: B
Monday 1 January 2018
Forget Cisco Systems, Ubiquiti Networks Is a Better Networking Stock
Cisco shares (NASDAQ: CSCO) have recovered nearly 30% this year, surpassing the 20% gain of the S & P 500. That was a surprising race for the 33-year-old network giant, which is expected to post low single-digit sales and earnings growth this year.
The 3% dividend yield from Cisco makes it a decent game for conservative investors. But for investors looking for a faster-growing game in the busy network industry, Ubiquiti Networks (NASDAQ: UBNT), which pays no dividend and has risen 22% this year, could be a better option for four simple reasons.
1. It's one of the growing WLAN players
Ubiquiti mainly sells wireless local area network (WLAN) products for service providers and business customers. Unlike larger WLAN players such as Cisco, Ubiquiti focuses on emerging and unattended markets with its UniFi family of access points, switches, gateways and IP cameras for enterprise customers and their airMAX and EdgeMAX products for service providers. .
That niche strategy boosted Ubiquiti's WLAN market share from 4.3% to 5.3% between the third quarter of 2016 and 2017, according to IDC. That makes Ubiquiti one of the top three WLAN players, along with Cisco and Huawei, which increased its market share annually.
Those gains came at the expense of latecomers such as Aruba of Hewlett-Packard Enterprise and Brocade-Ruckus of Broadcom.
2. It will benefit from the smart home revolution
Zion Market Research estimates that the global smart home market could grow from $ 24.1 billion in 2016 to $ 53.5 billion in 2022. That growth should boost demand for enterprise-class home WiFi solutions.
That's why Ubiquiti introduced AmpliFi, a $ 312 package of two automatically configured mesh antennas and a router that offers enterprise-class WLAN speeds without "dead zones" for home users. Following its launch, Gadget Review stated that the AmpliFi mesh network system offers "enough performance and scope to break all the speed records we have in the books".
But Ubiquiti lost control of the initial launch of AmpliFi earlier this year when a last-minute redesign and high shipping costs resulted in a loss of profitability during the second quarter. But if AmpliFi gains ground with conventional consumers and Ubiquiti fulfills its promise to extend the line to a family of products, the company could obtain a new flow of consumer income to complement its core business market.
Cisco offers mesh network solutions for enterprise customers, but it still does not offer a conventional home package like AmpliFi. Until that happens, Ubiquiti should enjoy an early advantage in space with rivals such as Netgear and Belys Linksys.
3. Greater growth of the upper and lower line
Ubiquiti's revenues increased 30% to $ 865.3 million last year, as its net income grew 21% and its diluted EPS increased 24%. That growth was supported by strong demand for its UniFi, airMAX and EdgeMAX products. For the current year, Ubiquiti expects its revenues and profits to increase by 18% and 25%, respectively, despite the hiccup mentioned above in its launch of AmpliFi.
Those growth figures seem much stronger than Cisco's 2% sales decline and 10% of profits last year. Revenue from Cisco's switching and routing businesses, which accounted for almost half of its top line, respectively, fell 5% and 4% due to the commoditization of both aging markets.
For the current year, analysts expect Cisco revenues and profits to increase 1% and 3% respectively, with the growth of its stronger wireless and security businesses offsetting lower demand for routers and switches.
That change is encouraging, but it does not fully justify Cisco's rally this year, which seems partly driven by investors seeking income in a low-yield market and the excitement of lower corporate tax rates that allow it to repatriate its mountain of cash abroad.
4. Reasonable ratings
Ubiquiti sells 22 times more than profits and 20 times the profits advanced, compared to the industry average P / E of 37 for communication equipment suppliers. Cisco has a final P / E of 20 and a direct P / E of 16.
Cisco has lower multiples, but it also has an anemic growth and a market limit that is almost 36 times higher than the $ 5.3 billion valuation of Ubiquiti. Therefore, Ubiquiti probably has much more room to run than Cisco, if it plays its cards well.
But mind the pitfalls...
Ubiquiti is an interesting niche player in the networking market, but investors must recognize the risks. The expansion of wireless cloud networking platforms, such as Cisco's Meraki, could accelerate Ubiquiti's growth in the enterprise market.
AmpliFi may not find a foothold if the smart home market fails or conventional consumers refuse to upgrade their existing home WiFi networks. Therefore, Ubiquiti is much riskier than Cisco, but it could offer much higher rewards in the long term.
10 actions that we like better than Cisco Systems
By investing geniuses, David and Tom Gardner have an inventory advice, you can pay to listen. After all, the bulletin that has been published for more than a decade, Motley Fool Stock Advisor, has tripled the market. *
David and Tom have just revealed what they think are the top ten stocks that investors can buy right now ... and Cisco Systems was not one of them! That's right, they believe that these 10 actions are even better purchases.
The 3% dividend yield from Cisco makes it a decent game for conservative investors. But for investors looking for a faster-growing game in the busy network industry, Ubiquiti Networks (NASDAQ: UBNT), which pays no dividend and has risen 22% this year, could be a better option for four simple reasons.
1. It's one of the growing WLAN players
Ubiquiti mainly sells wireless local area network (WLAN) products for service providers and business customers. Unlike larger WLAN players such as Cisco, Ubiquiti focuses on emerging and unattended markets with its UniFi family of access points, switches, gateways and IP cameras for enterprise customers and their airMAX and EdgeMAX products for service providers. .
That niche strategy boosted Ubiquiti's WLAN market share from 4.3% to 5.3% between the third quarter of 2016 and 2017, according to IDC. That makes Ubiquiti one of the top three WLAN players, along with Cisco and Huawei, which increased its market share annually.
Those gains came at the expense of latecomers such as Aruba of Hewlett-Packard Enterprise and Brocade-Ruckus of Broadcom.
2. It will benefit from the smart home revolution
Zion Market Research estimates that the global smart home market could grow from $ 24.1 billion in 2016 to $ 53.5 billion in 2022. That growth should boost demand for enterprise-class home WiFi solutions.
That's why Ubiquiti introduced AmpliFi, a $ 312 package of two automatically configured mesh antennas and a router that offers enterprise-class WLAN speeds without "dead zones" for home users. Following its launch, Gadget Review stated that the AmpliFi mesh network system offers "enough performance and scope to break all the speed records we have in the books".
But Ubiquiti lost control of the initial launch of AmpliFi earlier this year when a last-minute redesign and high shipping costs resulted in a loss of profitability during the second quarter. But if AmpliFi gains ground with conventional consumers and Ubiquiti fulfills its promise to extend the line to a family of products, the company could obtain a new flow of consumer income to complement its core business market.
Cisco offers mesh network solutions for enterprise customers, but it still does not offer a conventional home package like AmpliFi. Until that happens, Ubiquiti should enjoy an early advantage in space with rivals such as Netgear and Belys Linksys.
3. Greater growth of the upper and lower line
Ubiquiti's revenues increased 30% to $ 865.3 million last year, as its net income grew 21% and its diluted EPS increased 24%. That growth was supported by strong demand for its UniFi, airMAX and EdgeMAX products. For the current year, Ubiquiti expects its revenues and profits to increase by 18% and 25%, respectively, despite the hiccup mentioned above in its launch of AmpliFi.
Those growth figures seem much stronger than Cisco's 2% sales decline and 10% of profits last year. Revenue from Cisco's switching and routing businesses, which accounted for almost half of its top line, respectively, fell 5% and 4% due to the commoditization of both aging markets.
For the current year, analysts expect Cisco revenues and profits to increase 1% and 3% respectively, with the growth of its stronger wireless and security businesses offsetting lower demand for routers and switches.
That change is encouraging, but it does not fully justify Cisco's rally this year, which seems partly driven by investors seeking income in a low-yield market and the excitement of lower corporate tax rates that allow it to repatriate its mountain of cash abroad.
4. Reasonable ratings
Ubiquiti sells 22 times more than profits and 20 times the profits advanced, compared to the industry average P / E of 37 for communication equipment suppliers. Cisco has a final P / E of 20 and a direct P / E of 16.
Cisco has lower multiples, but it also has an anemic growth and a market limit that is almost 36 times higher than the $ 5.3 billion valuation of Ubiquiti. Therefore, Ubiquiti probably has much more room to run than Cisco, if it plays its cards well.
But mind the pitfalls...
Ubiquiti is an interesting niche player in the networking market, but investors must recognize the risks. The expansion of wireless cloud networking platforms, such as Cisco's Meraki, could accelerate Ubiquiti's growth in the enterprise market.
AmpliFi may not find a foothold if the smart home market fails or conventional consumers refuse to upgrade their existing home WiFi networks. Therefore, Ubiquiti is much riskier than Cisco, but it could offer much higher rewards in the long term.
10 actions that we like better than Cisco Systems
By investing geniuses, David and Tom Gardner have an inventory advice, you can pay to listen. After all, the bulletin that has been published for more than a decade, Motley Fool Stock Advisor, has tripled the market. *
David and Tom have just revealed what they think are the top ten stocks that investors can buy right now ... and Cisco Systems was not one of them! That's right, they believe that these 10 actions are even better purchases.
Wednesday 13 September 2017
Cisco 300-115 Question Answer
While working in the core network building, a technician accidently bumps the fiber connection between two core switches and damages one of the pairs of fiber. As designed, the link was placed into a non-forwarding state due to a fault with UDLD. After the damaged cable was replaced, the link did not recover. What solution allows the network switch to automatically recover from such an issue?
A. macros
B. errdisable autorecovery
C. IP Event Dampening
D. command aliases
E. Bidirectional Forwarding Detection
Answer: B
A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template. The SDM template is causing the CPU of the switch to spike during peak working hours. What is the root cause of this issue?
A. The VLAN receives additional frames from neighboring switches.
B. The SDM VLAN template causes the MAC address-table to overflow.
C. The VLAN template disables routing in hardware.
D. The switch needs to be rebooted before the SDM template takes effect.
Answer: C
A. macros
B. errdisable autorecovery
C. IP Event Dampening
D. command aliases
E. Bidirectional Forwarding Detection
Answer: B
A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template. The SDM template is causing the CPU of the switch to spike during peak working hours. What is the root cause of this issue?
A. The VLAN receives additional frames from neighboring switches.
B. The SDM VLAN template causes the MAC address-table to overflow.
C. The VLAN template disables routing in hardware.
D. The switch needs to be rebooted before the SDM template takes effect.
Answer: C
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