What is the minimum header size of an IP packet?

Options: 16 bytes B. 10 bytes             C. 20 bytes D. 32 bytes

Ans:– C ,

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More Computer Networks Related questions:

Error detecting code is
Options: an error-detecting code based on a summation operation performed on the bits to be checked,    a check bit appended to an array of binary digits to make the sum of all the binary digits.,    a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the error is detected.,    the ratio of the data units in error to the total number of data units

Ans:C ,C

A data structure where elements can be added or removed at either end but not in the middle
Options: a. Linked lists b. Stacks c. Queues d. Deque

Ans:- d,- d

. Taskbar is used for
Options: a. Navigation program b. Switching between program c. Start a program d. All of above

Ans: d, d

Analog and digital controllers:
Options: cost the same to build,    accept the same input signals,    can be changed with equal case,    All of the above

Ans:E ,E

The rule(s) to follow in constructing decision tables is (are):
Options: a decision should be given a name,    the logic of the table is independent of the sequence in which conditions rules are written, but the action takes place in the order is which the events occur.,    standardized language must be used consistently.,    All of the above

Ans:D ,D

A goal of data mining includes which of the following?
Options: To explain some observed event or condition,    To confirm that data exists,    To analyze data for expected relationships,    To create a new data warehouse

Ans:A ,A

Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?
Options: Layer 2,    Layer 3,    Layer 4,    Layer 7

Ans:C ,C

We combine hardware, software, people, procedures, and data to create an _____
Options: people,    icons,    information system,    on-line

Ans:C ,C

Bit map terminal
Options: support displays containing multiple windows,    requires considerable amount of video RAM,    requires tremendous amount of copying and hence low performance,    All of the above

Ans:D ,D

What command is used to change the working directory?
Options: cdir,    chdir,    changedir,    cd

Ans:D ,D

. The advantage of COM are its __ and __
Options: A) Compact size; speed readability B) Compact size, speed C) Readability; speed D) Low cost; readability


5. you can copy command.com to your disk from hard disk
Options: a. true b. false    

Ans:Correct Answer: a ,Correct Answer: a

. To show/hide the grid lines in Microsoft Excel 2007
Options: a. Page Layout -> Grid lines -> View b. Insert -> Grid lines -> View c. View -> Grid lines -> View d. Edit -> Grid lines -> View

Ans:– a,– a

What does the acronym RTS represent?
Options: Required to save,    Ready to start,    Request to send,    Right to separate

Ans:C ,C

If you want all of the white cats grouped together in the database, you need to sort by ________.
Options: Color, then Gender B. Pet Type, then Color C. Pet Type, then Gender D. Color, then Pet Name

Ans:– B ,

Which one of the following is a statement of Kirchhoffs current law?
Options: The current through a resistance is proportional to the value of resistance and the IR drop across it,    The total current in a parallel circuit is less than the value of the smallest current,    The algebraic sum of currents in a loop is equal to zero,    The algebraic sum of currents entering and leaving a point is equal to zero

Ans:C ,C

Which of the following are likely to jam the read/write head of a disk pack?
Options: Dust,    Smoke particle,    Finger print smudge,    All of the above

Ans:D ,D

The personnel which deal with the computer and its management put together is known as
Options: Firm ware,    Human ware,    Software,    Hardware

Ans:B ,B

The intersection of a column and row in a spreadsheet is called a bon or
Options: Key,    Field,    Cell,    Menu

Ans:C ,C

Super computers are primarily useful for
Options: Input-output intensive processing,    Data-retrieval operations,    Mathematical-intensive scientific applications,    All of the above

Ans:C ,C

In which of the following can many entity instances of one type be related to many entity instances of another type?
Options: One-to-One Relationship,    One-to-Many Relationship,    Many-to-Many Relationship,    Composite Relationship

Ans:C ,C

Which of the following is not an advantage of the structured approach to system development?
Options: it focuses on the physical aspects of the system,    the system specification is very graphic,    the user area is studied thoroughly,    the documentation is Cumulative

Ans:A ,A

What are the three options available in Insert >> Picture menu?
Options: a. Clipart, Pictures, Shapes b. Clipart, From File, Shapes c. Clipart, From Files, AutoShapes d. Clipart, Pictures, AutoShapes

Ans: – C , – C

When applying a square waveform to a capacitor, the circuit tends to:
Options: peak the voltage and round off the current waveforms,    peak the current and round off the voltage waveforms,    round off both the voltage and current waveforms,    peak both the voltage and current waveforms

Ans:B ,B

Conversion of a hexadecimal number 3D16 to binary number is
Options: 1111012,    1100112,    110001102,    1100012

Ans:A ,A

A search value can be an exact value or it can be
Options: a. Logical Operator b. Relationship c. Wild card character d. Comparison operation

Ans:ndash; c,ndash; c

. Which of the following memory unit that processor can access more rapidly
Options: a. Main Memory b. Virtual Memory c. Cache memory d. Read Only Memory

Ans:6 – c ,6 – c

In this world of fast changing computer technology, one of the most important factor to be considered while purchasing a PC is, it should have a provision for
Options: high level integration,    self upgradability,    intelligent sensors,    faster data access

Ans:B ,B

. Which is not a command that is selectable from right click menu of a field column?
Options: a. Hide columns b. Rename columns c. freeze columns d. sort descending

Ans:– b,– b

How can you see the address of the DHCP server from which a client received its IP address?
Options: By using Advanced Properties of TCP/IP,    By using IPCONFIG/ALL,    By using DHCPINFO,    By pinging DHCP

Ans:B ,B

Administrate supervision of database activities is the responsibility of the
Options: Database administrator,    DP Manager,    DB Manager,    DP administration

Ans:A ,A

What is the name of the temporary data storage area between a peripheral device and the CPU which compensates for the difference between their speeds?
Options: Backing storage,    Buffer,    Main storage,    Temporary storage

Ans:B ,B

. Unicode standard is
Options: a. Keyboard layout b. Software c. Font d. Character encoding system

Ans:5 – d ,5 – d

. What type of controls are text boxes when data from the recordset is visible?
Options: a. Align b. Bound c. Calculated d. Unbound

Ans:3 – b ,3 – b

. Which of the following have the fastest access time?
Options: Semiconductor Memories B. Magnetic Disks C. Magnetic Tapes D. Compact Disks

Ans: – A ,

. Which one of the following is not a layer of operating system?
Options: a. Kernel b. Shell c. Application program d. Critical selection

Ans:2 – d ,2 – d

Visual clues that are helpful in computer vision include:
Options: colour and motion,    depth and texture,    height and weight,    a and b above

Ans:D ,D

Which of the following is not a font style?
Options:  A) Bold, B) Italics, C) Regular, D) Superscript, 


. Which of the following is a standard file format language for web documents?
Options: a. HTML b. XML c. XSD d. XSL

Ans:3 – a ,3 – a

Transistorized computer circuits were introduced in the
Options: first generation,    second generation,    thir4 generation,    fourth generation

Ans:B ,B

. The contents of information are stored in
Options: A) Memory data register B) Memory address register C) Memory arithmetic registers D) Memory access register


Which standard govern parallel communications?
Options: RS232,    RS-232a,    CAT 5,    IEEE 1284

Ans:D ,D

The system unit of a personal computer typically contains all of the following except:
Options: microprocessor,    disk controller,    serial interface,    modem


Which term is used to describe RAM?
Options: Dynamic RAM (DRAM),    Static RAM (SRAM),    Video RAM (VRAM),    All of the above

Ans:D ,D

. Which statement is valid?

Options: A) 1KB = 1024 bytes B) 1 MB=2048 bytes C) 1 MB = 1000 kilobytes D) 1 KB = 1000 bytes


. A __________ enables you to view data from a table based on a specific criterion
Options: a. Form b. Query c. Macro d. Report

Ans:0 – b ,0 – b

A distributed data processing configuration in which all activities must pass through a centrally located computer is called a:
Options: ring network,    spider network,    hierarchical network,    data control network

Ans:B ,B

Which type of display is the latest to be used for portable computer?
Options: LED display,    LCD display,    Plasma display,    Electroluminescent display

Ans:D ,D

Which of the following is directry controlled from a keyboard.
Options: Card punch,    Punched paper tape,    Magnetic disk,    Magnetic tape

Ans:A ,A

Trend analysis:
Options: is used only in financial planning,    can improve control system response,    requires a very expensive system to implement,    is a brand new concept

Ans:B ,B