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Networking Quiz - Could YOU be a T-Mobile Sales Engineer?

AreaCode707

Lifer
Sep 21, 2001
18,447
133
106
Heya guys. I sit next to a recruiter who's constantly repeating these questions to her clueless candidates day after day during phone interviews, writing them off one after the other because they have no clue what she's talking about. How hard are they, exactly? There are a bunch of positions open - answer the questions for fun (by PM maybe, so other people don't borrow off your answers? not like they can't google them) or, if you have an interest in the positions, let me know. There are a whole bunch open in different locations.
But I don't know much about networking. Are these abnormally hard questions and our candidates are just morons? And yes, I have the answers that were supplied to my recruiter.


How many usable IP addresses in a "slash 24"

Explain the difference between UDP and TCP, and applications appropriate to
each?

Describe a VLAN ("vee lan") and its functions

What is Cisco's HSRP?

At a high level, explain the difference between OSPF and BGP?

Explain DHCP and its role?

What is a DOS ("dos") attack?

3 principles for a well designed and robust network?
 

Maximus96

Diamond Member
Nov 9, 2000
5,388
1
0
i can't answer any...i'm a civil...guess i can't be a T-Mobile sales engineer...
 

Ameesh

Lifer
Apr 3, 2001
23,686
1
0
Originally posted by: Adul
Wow those are not easy questions to answer either.

are you serious? anyone with basic networking knowledge should be able to answer all of those with no problem other then the cisco routing protocol question, and slash 24 is a bit vauge as to what the interviewer means but a simple clarification should lend it to a simple answer
 

BooGiMaN

Diamond Member
Jul 5, 2001
7,955
0
0
what does a sales engineer do exactly....is that the guy selling cell phones at the booth in the mall?
 

Adul

Elite Member
Oct 9, 1999
32,999
44
91
danny.tangtam.com
Originally posted by: Ameesh
Originally posted by: Adul
Wow those are not easy questions to answer either.

are you serious? anyone with basic networking knowledge should be able to answer all of those with no problem other then the cisco routing protocol question, and slash 24 is a bit vauge as to what the interviewer means but a simple clarification should lend it to a simple answer

I can answer most of them, except cisco the difference between OSPF and BGP.

 

AreaCode707

Lifer
Sep 21, 2001
18,447
133
106
Originally posted by: BooGiMaN
what does a sales engineer do exactly....is that the guy selling cell phones at the booth in the mall?

Join our growing Sales Engineering team in the San Francisco, CA region!

The Sales Engineer reports to the Manager of Sales Engineering and supports regional National Strategic Account sales teams with respect to voice and data products. The SE typically supports 5 - 6 sales account managers. As part of the sales team, the SE provides technical sales support and consulting to assure customer integration and implementation of established T- Mobile products and services.

Typical pre-sales activities include gaining an understanding of the customer's business and analyzing the customer's mobile communication requirements. Provides technical support in sales presentations, product demonstrations, installation, ongoing support of company products to ensure performance meets customer requirements, as well as providing answers to customer's technical inquiries. Responsible for architecting wireless solutions that meet customer needs and are deliverable over the T- Mobile network. The SE is the wireless data subject matter expert on current and future wireless technologies. Works closely with marketing and engineering in support of network development efforts, alpha and beta evaluation tests, as well as new product rollouts. Often leads cross- functional efforts of sales, engineering, operations and care to address customer issues and support customer needs.


QUALIFICATIONS:
6 - 8 years in telecommunications, IT administration or network engineering roles
Proven network and application troubleshooting skills
Understanding of and experience with the following:
· routing protocols
· remote access computing methods
· layered communication protocols
· system administration roles
· enterprise security architectures and principles
· hands- on experience with IP and ATM networks
· understanding of 802.11b (WiFi) networks and design
· ability to make technical presentations at senior executive management level
· ability to clearly present technical concepts in a non- technical way
· excellent written and oral communication skills

Strong goal attainment, organizational, time management, prioritization and people skills are essential. Ability and willingness to multi- task, manage, and work hard in a fast-paced, team environment. This position requires up to 40% travel. This position does not have direct supervisory responsibilities.

EDUCATION & EXPERIENCE:
BSEE or BSCSE preferred. MIS or MSEE desired. Professional track record of successful technical leadership. Professional certifications and/or practical knowledge in at least ONE of the following areas required:
(1) Security Administrator: experience in firewall design and administration, knowledge of Checkpoint, PIX, Nokia, PKI, RSA, DES, Encryption, security management, etc.
(2) UNIX Systems Administration: experience in Solaris, Linux, PERL, Shell scripting, RADIUS, DNS, DHCP, etc.
(3) Application Developer: experience writing and developing wireless data applications, ability to write programs using PERL, JAVA and/or C++.
(4) Windows Systems Administrator: experience in Exchange, Windows2000 Server, NT4.0, IIS, ISA, MIS, CHCP, DNS or equivalent experience in Domino server
(5) Corporate LAN Administrator: experience in routing and switching, LAN administration of 1k+nodes, certifications in MCP, MCP+1, MCSE, CNE, etc.
(6) WAN Network Engineering: experience routing and switching, designing, building and optimizing layer 2 and 3 networks, desired certifications include CCNA, CCNP, CCDA, CCDP or related vendor- specific training.
(7) Successful completion of wireless professional training in AMPS, TDMA, GSM, GPRS. 1XRTT or CDMA.
 

AreaCode707

Lifer
Sep 21, 2001
18,447
133
106
Originally posted by: Ameesh
Originally posted by: Adul
Wow those are not easy questions to answer either.

are you serious? anyone with basic networking knowledge should be able to answer all of those with no problem other then the cisco routing protocol question, and slash 24 is a bit vauge as to what the interviewer means but a simple clarification should lend it to a simple answer

That's kinda what I wondered... I mean, I recognize the terms and I'm a networking dunce. I was curious how hard the answers were. And yeah, I got the recruiter's okay to post here. In fact, she said if I came up with anyone good, let her know!
 

schizoid

Banned
May 27, 2000
2,207
1
0
T-mobile?

Instead of asking questions your average "I'm dipsh!t certified" tech can answer, why not ask real questions, like:

In a IS-95 or GSM MAP system, what is the function of GTT?

Where does the PSTN interface with the PCS network?

How many layers is MTP?

What facilitates PCS signaling?

Explain CDMA versus TDMA?

What's the difference betweeh the HLR and a VLR?

What 2.5G node handles mobility management for a GPRS compliant network?


I swear...most net tech's server the same function as an o'reily book (that is to say, not that much)

Sigh.

 

EyeMWing

Banned
Jun 13, 2003
15,670
1
0
I can answer everything but the Cisco question, and the OSPF and BGP question.

Interestingly, I know more about the list of questions that schizoid posted - I hang out with a lot of wireless junkies and logistics whores on IRC. All of those have come up in the past 24 hours alone.
 

Kadarin

Lifer
Nov 23, 2001
44,296
16
81
These questions are not difficult, and should be easily answerable by anyone looking for a technical position in the network engineering field.
 

AreaCode707

Lifer
Sep 21, 2001
18,447
133
106
Originally posted by: Astaroth33
These questions are not difficult, and should be easily answerable by anyone looking for a technical position in the network engineering field.

I think that's *sorta* the point... It's a prescreen, not a hiring interview, to see if the candidates are even worth passing on to the hiring managers. Kind of an "if you can't even answer..." situation.
 

dmcowen674

No Lifer
Oct 13, 1999
54,889
47
91
www.alienbabeltech.com
Originally posted by: schizoid
T-mobile?

Instead of asking questions your average "I'm dipsh!t certified" tech can answer, why not ask real questions, like:

In a IS-95 or GSM MAP system, what is the function of GTT?

Where does the PSTN interface with the PCS network?

How many layers is MTP?

What facilitates PCS signaling?

Explain CDMA versus TDMA?

What's the difference betweeh the HLR and a VLR?

What 2.5G node handles mobility management for a GPRS compliant network?


I swear...most net tech's server the same function as an o'reily book (that is to say, not that much)

Sigh.

Thanks schizoid,

Thats's more like it for a Cellular Sales Engineer, the other questions are for the Backhaul IP Infrastructure.

Most of what you just said applies to the Switch side (Home Resource Vs Visitor) except for the Radio Mods of Code Multiplexing Vs Time Division Multiplexing over the air.

Are you running Edge yet?

 

Shockwave

Banned
Sep 16, 2000
9,059
0
0
A bit hard for me, but then again I'm a ATM engineer and not IP based so..... I dont rightly give 2 shytes about your IP packet, I'll shove whatever you want into my atm cell and put it anywhere in the world in 100 ms flat ;)
 

Linux23

Lifer
Apr 9, 2000
11,374
741
126
Open Shortest Path First and Border Gateway Protocol are the only two i'm not 100% familar with. Would I still get a chance if I screwed that one up?
 

schizoid

Banned
May 27, 2000
2,207
1
0
Originally posted by: dmcowen674
Originally posted by: schizoid
T-mobile?

Instead of asking questions your average "I'm dipsh!t certified" tech can answer, why not ask real questions, like:

In a IS-95 or GSM MAP system, what is the function of GTT?

Where does the PSTN interface with the PCS network?

How many layers is MTP?

What facilitates PCS signaling?

Explain CDMA versus TDMA?

What's the difference betweeh the HLR and a VLR?

What 2.5G node handles mobility management for a GPRS compliant network?


I swear...most net tech's server the same function as an o'reily book (that is to say, not that much)

Sigh.

Thanks schizoid,

Thats's more like it for a Cellular Sales Engineer, the other questions are for the Backhaul IP Infrastructure.

Most of what you just said applies to the Switch side (Home Resource Vs Visitor) except for the Radio Mods of Code Multiplexing Vs Time Division Multiplexing over the air.

Are you running Edge yet?

Edge? P-shaw.

3G is dead before it ever lifted off.

But no...I actually have sorta given up on Telephony. It's neat, but it's too unwieldy (in terms of research, I mean). I'd like to do more 4G stuff (IP based signaling, VoIPoCellular etc) but I doubt i'll have time.

But yes, I did write my MS thesis on mobility management optimization/signaling infrastructure in PCS (2G and beyond) networks. I'd imagine my PhD thesis will be on Sensornets, but we'll see.


 

MagicianBdotCom

Senior member
Nov 30, 2002
610
0
0
Wow, didn't think taking the Cisco class in HS would be useful at all. I can answer all those questions. Is having a CCNA certfication useful at all? I got it just so I could put it on my college app but I have no interest in doing networking stuff. My friend is getting his CCNP. Our high school has one of the best teaching centers for cisco certifcation my teacher told me constantly 2 years ago, I believe him too. Got like 30 routers and our school gets new computers every year. Damn... they should pay teachers more :p
 

Ausm

Lifer
Oct 9, 1999
25,213
14
81
Originally posted by: Ameesh
Originally posted by: Adul
Wow those are not easy questions to answer either.

are you serious? anyone with basic networking knowledge should be able to answer all of those with no problem other then the cisco routing protocol question, and slash 24 is a bit vauge as to what the interviewer means but a simple clarification should lend it to a simple answer

I agree

Ausm