Thursday 31 December 2015

200-120 Exam Question No 34

Question No 34:

Which two link protocols are used to carry multiple VLANs over a single link? (Choose two.)

A.
VTP
B.
802.1q
C.
IGP
D.
ISL
E.
802.3u

Answer: B, D

Sunday 27 December 2015

Cisco launches code review after Juniper's spyware disclosure

However, it found any unauthorized code but continuously reviewing

Cisco Systems has launched an internal code revision after the disclosure last week of code Juniper unauthorized spying in our products the company firewall.

So far, "we have no indication of unauthorized code to our products," wrote Anthony Grieco, senior director of security and confidence Organization of Cisco, in a blog post Monday.

The code review was initiated by Cisco and not the result of contact with the police, Grieco wrote.

Juniper said Thursday an internal audit discovered that could allow the secret code and remote access VPN connections also undertake encrypted. The code has been found in some versions of an operating system called ScreenOS firewall devices powers.

 Juniper Research, but so far he has not said he suspects that the code was inserted. Frank admission of the company met with praise, but hoping to get more details are released.

Juniper The problem is the latest in a series of problems affecting major network providers, including routers and firewalls have deep access to Internet traffic in an organization. The devices are key points of launching espionage campaigns.

Leaked by former NSA contractor Edward Snowden in 2013 documents showed how Western intelligence agencies have tried to undermine the team by Juniper, Huawei and Cisco.

 Grieco wrote that Cisco development practices prohibit the inclusion of "back doors" in their products. Backdoors allow account credentials as secret access undocumented, clandestine channels of communication or tools undocumented trade diversion.

No similar to those discovered by Juniper have been found in code Cisco indicators Grieco wrote. Cisco processes include penetration testing and code reviews by network engineers and cryptography wrote.

"Despite our normal practices should detect unauthorized software, we recognize that any process can eliminate all risks," says Grieco.

Since Snowden was a public document, Cisco has worked hard at demystifying suspicions that he voluntarily worked with intelligence agencies like the NSA.

In May 2014, when Cisco CEO John Chambers has sent a letter to President Obama in May 2014, warning that intelligence operations interfering with his team of "undermining confidence in our industry."

Huawei was excluded from the main business in countries like the US and Australia on unfounded beliefs, working with Chinese intelligence agencies

Sunday 20 December 2015

Demystifying Cisco's Five Pillar Innovation Strategy

 Large companies that are leaders in their industry in general have difficulty maintaining the entrepreneurial spirit that has its leadership position in the first place. On the one hand it has a social "new" relatively few companies like Facebook FB -1.92% that keep growing and, secondly, with companies like Yahoo YHOO -3.13% struggling in the new era of mobility, and the emerging wave IoT. For a company with a market capitalization of more than $ 130 billion, it is difficult for a company like Cisco Systems CSCO + 0.00% and peers to continue to innovate as they did when they started. While innovation is not necessarily on the structure when it comes to big business, we have to have some order around and it seems that executives and employees to waste time and have fun. Pouf chairs, open office, Starbucks SBUX -1.74% and gastronomy at work should be balanced with clear objectives and accountability. That's why Cisco has developed an innovation strategy multifaceted and structured to ensure that the innovative spirit is kept alive while taking responsibility.

Cisco's strategy is structured around five pillars. These five pillars are what you expect, if you have been involved in any part of the product or business strategy to build, buy, partner, co-invest and develop. Although these pillars may not be unique, I think the shape and amplitude that Cisco Systems is performed on them. I spent some time delving into the engine of innovation Cisco and want to share some of my findings.

Build

Promote the culture of innovation, Cisco was the first to build products and create their own IP (Intellectual Property). Cisco has more than 70,000 employees and of these, 25,000 are engineers ending require $ 6.3 billion in R & D. While the success of innovation is not only determined by how much you spend, but rather so spend on it and what you do with it, $ 6.3B dwarfs its rival networks -3.57% JNPR Juniper Networks, Brocade Communications Systems, Palo Alto Networks and Arista Networks. The amount of R & D spending indicates that Cisco puts gravity to maintain market leadership and the creation of new and innovative products.

The company strives to enhance the culture of innovation by implementing certain practices that foster innovation. Some of these practices include having 35% of engineers working in an environment of agile development and generally work on smaller, more agile teams. They are also supporting the project called "Alpha" which facilitate new disruptive technologies that drive innovation. As a result of these efforts, the company was able to generate 19,000 patents worldwide, with 12,000 of those coming to the United States.

Cisco also operates a technology investment fund that has financed 18 projects. These efforts are common among large high-tech companies as a way to influence small new companies that could be potential acquisition targets and the drivers of demand for its existing products.

Thursday 17 December 2015

200-120 Exam Question No 33

Question No 33:

Why will a switch never learn a broadcast address?

A.
Broadcasts only use network layer addressing.
B.
A broadcast frame is never forwarded by a switch.
C.
A broadcast address will never be the source address of a frame.
D.
Broadcast addresses use an incorrect format for the switching table.
E.
Broadcast frames are never sent to switches.

Answer: C

Sunday 13 December 2015

To Creates A New World

To creates a new world of opportunities: Cisco official – ‘It’s about better education, healthcare and job opportunities

Dramatic changes are now gaining momentum in all sectors of the city, creating a new world of opportunities that are made possible by the Internet of Things (IoT), said a high level of Cisco. IO is defined as network devices that are connected to the Internet and can be controlled remotely.

"What we see now is the second generation of the Internet. It will transform the life of every person in the world. In the first generation, often had to be in the wrong country, the city and the right to participate with her "John Chambers, President and CEO of Cisco earlier, told the media during roundtable as part of the Internet The third Global Forum (IoTWF), held in Dubai from December 6 to December 8 The event was with more than 20 digital cities and implementations of the online industry solutions enabled by the IO.

In an interview with Kuwait Times, Inbar Lasser-Raab, vice president of Products and Marketing Solutions - corporate segment, Cisco Systems, he spoke network solutions, mobility, cloud technology and Internet Company of Things (IoT) products and solutions. Excerpts:

Thursday 10 December 2015

200-120 Exam Question No 32

Question No 32:

Which command enables RSTP on a switch?

A.
Spanning-tree uplinkfast
B.
Spanning-tree mode rapid-pvst
C.
Spanning-tree backbonefast
D.
Spanning-tree mode mst

Answer: B

Sunday 6 December 2015

Cisco ACI Adds Docker, OpFlex, Layer 4-7 Support


Docker support. OpFlex support. A greater emphasis on layer 4-7 services. These are some of the enhancements Cisco deploys the new version of software for infrastructure Centric, or TIA applications.

Meta larger image Cisco is enhancing its portfolio Defined Network (SDN) software built on open APIs, open standards and flexible ecosystem. The move could appease some critics Cisco accused the company of being too exclusive in the past.

"Customers tell me that only five to 10 percent of their networks are automated today," said Soni Jiandani, senior vice president of Cisco. "They are willing to take the full automation of their networks and network services through a single pane of management, while improving security applications east-west traffic, multi-cloud and bare metal flow coherence.

Looking for complete automation

 Cisco aims to offer its new software features, including heterogeneous virtualized environments including Microsoft Hyper-V and VMware VDS and microsegmentation for physical applications. The promise to deliver new automation capabilities across multiple data centers in multi-site environments.

The containers Docker integration technology is the ACI contributions to open source. This means that Cisco can now offer a model of coherent policy more flexibly with the AIT. Support for the integration of automated service for any third layer of third party services 7.4 could also make the company running.

"The policy-based automation, network security, and a central support compliance are essential to IT efficiency, business agility and competitive advantage," said Jiandani. "Several customers ACI achieve complete automation of the network and focus on automation in their 4-7 network services, security groups and applications layers as the next step".

Defying critics

 CliQr, DataTorrent Vnomic and already part of the 43 members of CREA Cisco ecosystem. The company just added Apprenda, KillerIT, convergence and ScienceLogic mix. These four new players offer Platform-as-a-Service (PaaS) that help organizations automate all of their applications and infrastructure equipment.

Besides all this, Cisco now supports ACI automation tools as OpenStack and VMware cloud automation and support vRealize OpFlex with Open vSwitch based on open standards.

We talk to Zeus Kerravala, principal analyst at ZK Research, to get his thoughts on the improved AIT. He said that this update the relevance of extending infrastructure.

"Cisco has a wide SDN-based standards approach. In the past, Cisco has been criticized for being closed and proprietary," Kerravala said. "What Cisco SDN includes success is really based on allowing an ecosystem of partners to work with you. That's what we focus on and there are a large part of this release. My research shows Cisco's SDN many more deployments than any other provider that does not exist. "