Certification Questions

Q:

What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?

A) Application B) Host-to-Host
C) Internet D) Network Access
 
Answer & Explanation Answer: B) Host-to-Host

Explanation:

The four layers of the TCP/IP stack (also called the DoD model) are Application/process, Host-to-Host, Internet, and Network Access. The Host-to-Host layer is equivalent to the Transport layer of the OSI model.

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Filed Under: CCNA

4 10493
Q:

Acknowledgments, sequencing , and flow control are characteristics  of which OSI layer?

A) Layer 2 B) Layer 3
C) Layer 4 D) Lawer 7
 
Answer & Explanation Answer: C) Layer 4

Explanation:

A reliable Transport layer connection uses acknowledgments to make sure all data is transmitted and received reliably. A reliable connection is defined by a virtual circuit that uses acknowledgments, sequencing, and flow control, which are characteristics of the transport layer.

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Filed Under: CCNA

1 10275
Q:

Availability Management is responsible for

A) Components and Business Processes B) Services and Components
C) Services, Components and Business Processes D) Services and Business Processes
 
Answer & Explanation Answer: B) Services and Components

Explanation:

Availability Management is the practice of identifying levels of IT Service availability for use in Service Level Reviews with Customers.

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4 10228
Q:

Why are CPM, GERT, and PERT not considered sufficient to create a project schedule?

A) All three are tools and techniques of schedule development, not the actual schedule B) As mathemetical analysis tools, they simply provide the dates that are posible, and do not consider resource pool limitations
C) They are sufficient. Each calculates early and late start and finish dates for each activity D) They are Monte Carlo techniques used to provide what-if analysis for adverse external factors on a project
 
Answer & Explanation Answer: B) As mathemetical analysis tools, they simply provide the dates that are posible, and do not consider resource pool limitations

Explanation:

Answer A is tempting because it is true by definition, but Answer B is correct because it properly answers the question, in that these techniques do not take into account resource pool constraints. Answer C is incorrect because it provides possible early and late start and finish dates, but not the actual schedules. Answer D is incorrect because none of the the three are simulation techniques. 

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Filed Under: PMP Certification

2 10142
Q:

If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to?

A) 172.16.45.0 B) 172.16.45.4
C) 172.16.45.8 D) 172.16.45.12
 
Answer & Explanation Answer: D) 172.16.45.12

Explanation:

A/30, regardless of the class of address, has a 252 in the fourth octet. This means we have a block size of 4 and our subnets are o,4,8,12,16, etc. Address 14 is obviously in the 12 subnet.

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Filed Under: CCNA

5 9977
Q:

How many joining conditions are required to join 4 tables in SQL?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:

To join 'n' tables 'n-1' conditions should be satisfied.

So to join 4 tables 3 conditions should be satisfied.

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4 9896
Q:

The spell check module of a word-processing software package contains a number of errors. The Development department has corrected these errors in a new version. Which process is responsible for ensuring this updated version is tested?

A) Configuration Management B) Incident Management
C) Problem Management D) Release Management
 
Answer & Explanation Answer: D) Release Management

Explanation:
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Filed Under: ITIL Certification

0 9626
Q:

 The main objective of Availability Management is?

A) To monitor and report availability of services and components B) To guarantee availability levels for services and components
C) To ensure that all targets in Service Level Agreements (SLAs) are met D) To ensure that service availability matches or exceeds the agreed needs of the business
 
Answer & Explanation Answer: D) To ensure that service availability matches or exceeds the agreed needs of the business

Explanation:
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Filed Under: ITIL Certification

2 9480