Welcome to the Thursday, July 24 edition of The Mastermind!
I've got a brand-new CCNA Security practice exam for you today, along with some other surprises ... so let's get started!
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Get Your Mind Clicking With These Cisco Certification Practice Exams!
Here's my latest practice exam, a 10-question set of CCNA Security questions:
CCNA Security: NTP, Telnet, SSH, And More!
The answers to those questions will be posted on that page later today. In the meantime, tackle these practice exams as well!
CCNA Certification: Frame Relay Questions
CCNA Certification: HDLC And PPP Questions
CCNA Certification: Static Routing And RIP Questions
The questions on static routing and RIP includes a tutorial on floating static routes that you CCNP candidates should read as well!
CCNA Certification Training Questions: RAM, ROM, Flash, And More!
I'll have more free practice exams, tutorials, and coming later this summer - free video training for your Cisco certification exams and home lab setup!
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Thought For The Day:
"You can be anything you want to be, if you only believe with sufficient conviction and act in accordance with your faith. Whatever the mind can conceive and believe, the mind can achieve." - Napoleon Hill
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Cisco Has Announced Three Additional CCNA Certifications!
But To Earn Them, You've Got To Be CCNA Certified, So Get Started Today!
Cisco has announced three brand-new CCNA-level Certifications:
CCNA Security
CCNA Voice
CCNA Wireless
Click those links to go to the new resource pages I've created for each new exam - I'll post practice questions, written tutorials, and video training on those pages in the weeks and months ahead.
There is a new CCNA Security tutorial on using SDM to configure one-step lockdown - the link is on the CCNA Security Resource page.
These new certifications are going to be a tremendous career boost to those who earn them.
Why? Just look at these statistics!
Security: Right now, 46% of companies included in the survey have a position dedicated to security - that's going to almost double over the next five years to 80%.
Voice: Currently, 40% of surveyed customers have a voice specialist. That number will rise to 69% in the next five years.
Wireless: While 33% of surveyed companies currently have a position dedicated to wireless, that value will double over the next five years to 66%.
(Stats were arrived at by Forrester Consulting during a study sponsored by Cisco. You can get a copy here.)
Those statistics tell a simple tale:
Network admins who have knowledge and certification in security, wireless, and voice will have a huge advantage over network admins who do not.
That's why Cisco is introducing these new certifications, and exactly why I'll be releasing Study Packages for all three of these specializations, beginning in September!
There's one detail you need to take care of now, though.
To earn any of these CCNA specialist certifications, you must earn your CCNA first, by either the one-exam (640-802) path or the two exam path (ICND 1 and 2).
This announcement by Cisco makes it more important than ever to be CCNA certified. Be ready to earn these new certifications by earning your CCNA now!
Just imagine how impressive your resume and reputation will be when you're CCNA certified and certified in security, voice, and wireless!
Personally, I'd hire you in a minute, and I've always been tough about who I hire. And if you already worked for me, you'd get the next promotion.
Get ready for these new certifications by starting on your CCNA now. Take five minutes to read this page - it's more important than ever.
The Ultimate CCNA Study Package
Starting this September, I'll be releasing Study Packages for CCNA Security, CCNA Voice, and CCNA Wireless. While I'm working on those, you need to be working on your CCNA to take advantage of these vital new certifications.
Click that link and let's get started!
The Ultimate CCNA Study Package
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Here are your Cisco practice exam questions for Thursday, July 24! All questions today are short answer.
CCNA Certification:
What command disables Proxy ARP on a Cisco router interface?
CCENT Certification:
What single word describes a major advantage of using UDP over TCP?
CCNA Security Certification / CCNP ISCW Exam:
In terms of network security, what purpose does a honeypot serve?
CCNP Certification / BSCI Exam:
In the following output, describe....
1. The meaning of "EX"
2. The value replaced by the question mark
3. The default setting of the value replaced by the question mark
4. The meaning of "2195456"
D EX 14.14.14.14 [ ? /2195456] via 172.12.123.1, 00:11:41, Serial0
CCNP Certification / BCMSN Exam:
What command resulted in the following output?
SW1#
Vlan33 is up, line protocol is up
Hardware is EtherSVI, address is 0012.7f02.4b42 (bia 0012.7f02.4b42)
Internet address is 30.1.1.11/24
CCNP / ONT Exam:
What modules allow you to extend NBAR capabilities without having to reload the router or update the IOS?
Answers right here on Friday!
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Get All Four Of My CCNP Study Packages With The CCNP Study Package Bundle - You Save $70 And Begin Studying For CCNP Exam Success Immediately!
My BSCI, BCMSN, ONT, and ISCW Study Packages have helped CCNP candidates just like you master the skills needed to earn your certification, and right now you can save $70 and start studying for CCNP exam success just a few minutes from now with my CCNP Study Package Bundle!
The Ultimate CCNP Study Package Bundle
"I passed the ISCW with a 989!" - Terry Vinson, CCNP
"I passed the BSCI with a 922. Your study materials have been great!" - Pablo Mariano
"The BCMSN Study Guide and lab time were just what I needed to pass the 642-812 exam on my first attempt! The study guide helped me understand things in plain English." - Bryan Bartik
"I passed the BSCI with a resounding 966/1000!" - Vincenzo Marraro
"I would like to update you on my progress on the CCNP scene but before that again I would like to thank you again personally for the great BSCI, BCMSN and ISCW guides.
"I have scored 968 for the composite exam (I figure that I would like to see if I could do both the BSCI and BCMSN in one shot using your guides and boy was I not disappointed ;-)). I scored a perfect 1000 in my ISCW exam, too!" -- Nickelby Thane
The road to the CCNP begins here - with a single click!
The Ultimate CCNP Study Package Bundle
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Here are the answers to yesterday's questions!
CCNA Certification:
In an OSPF hub-and-spoke NBMA network, which router(s) require the neighbor command?
A. The DR
B. The DROthers
C. The BDR
D. All of these
E. None of these
Answer: A. The DR requires the neighbor command. It will not hurt anything to have it configured on the DROthers in real-world networks, but I wouldn't put it there on exam day. There are no BDRs in an OSPF hub-and-spoke network.
CCENT Certification:
What mode is the following router in?
Router1(config)#
Answer: Global configuration mode.
CCNA Security Certification / CCNP ISCW Exam:
You're configuring IPS in SDM, and you just enabled the Fail Closed option. What's the net effect?
Answer: Here's the exact description of Fail Closed from SDM itself:
"By default, while IOS compiles a new signature for a particular engine, it allows packets to pass through without scanning for the corresponding engine. Enable this option to make IOS drop packets during the compilation process."
Fail Closed is disabled by default.
CCNP Certification / BSCI Exam:
Which of the following are Cisco recommendations for OSPF deployments?
A. No router in more than three areas.
B. No area should contain more than 50 routers.
C. No router should have more than 60 neighbors.
D. No ABR should run more than one OSPF process.
Answer: A, B, C, D. Those are all Cisco best practices for OSPF.
CCNP Certification / BCMSN Exam:
You're examining the lights on a Cisco Aironet card. The green light is blinking slowly, the amber light is off. What does this generally indicate?
Answer: Here's a quick review of what those lights are and what the different combinations indicate.
We have two lights on a Cisco Aironet card. The green light is the Status LED, and the amber light is the Activity LED. We've got quite a few combinations with those two lights, so let's take a look at what each of the following LED readouts indicates.
Status off, Activity off - Naturally, this means the card isn't getting power!
Status blinking slowly, Activity off - the adapter's in Power Save mode.
Status on, Activity off - adapter has come out of Power Save mode.
Both lights blinking in an alternating fashion - adapter is scanning for its network.
Both lights blinking slowly at the same time - adapter has successfully associated with an AP (or other client if you have an Ad Hoc network)
Both lights blinking quickly at the same time - adapter is associated and is sending or receiving data
CCNP / ONT Exam:
What is Global Synchronization? Is it a benefit or a detriment to network performance?
Answer: Here's a review of tail drop and how it can cause Global Synchronization. Usually synchronization is good, but this kind isn't!
When the queue is full, packets that are trying to queue up for transmission literally have nowhere to be put! These packets are then subject to tail drop, which is a fancy way of saying "you're being dropped because we have no place to put you".
You know that TCP has a detection and recovery scheme when it comes to missing segments, so tail drop is no big deal, right? Quite the opposite, it's a huge deal.
The problem starts innocently enough, as the senders realize their TCP packets are being dropped. As we'd expect, the senders then throttle back on their transmission speed. After doing so, the senders will then gradually speed their transmission rates back up.
As multiple senders increase their transmission rates, the queue will fill up again, and the senders will again almost simultaneously slow their tranmission rates, followed by another near-simultaneous increase.
As a result of this global synchronization, the links are perpetually in one of two states - congested or underused. Basically, the network ends up being either hammered or not being used to its full potential, and those are both circumstances we want to avoid.
One way to avoid global synchronization is though the use of Random Early Detection (RED).
Whew! That's it for today! Enjoy your day, keep working on these new CCNA opportunities, and I'll see you Friday!
To your success,
Chris Bryant
CCIE #12933
http://www.thebryantadvantage.com/
The Bryant Advantage, 9429 Apple Blossom Drive, Mechanicsville, VA 23116, USA
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