[discussion_vu] Check out "CS502 Quiz No.2 Dated DEC03 2012" on VU Cafe

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[discussion_vu] Today Online Quran & Online Hadith 04 December 2012 (19th Muharram 1434)

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[discussion_vu] Check out "CS302 - Digital Logic Design CS302 fall 2012 Assignment No. 2 Due Date: 03 Dec, 2012." on Virtual University of Pakistan

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[VUSR] 66119 CS610 Quiz No.2 Dated DEC 03, 2012

CS610  - Computer Network

Quiz No.2 Dated Dec 03, 2012

 

Routing table is used to keep the information about…………….

Destination

Medium of transmission

Routers used in network

All of the above

 

 

Which of the following statement is true regarding Jitter?

Jitter is used for variance in transmission delays.

Jitter can occur when a packet is delayed.

Jitter is significance for voice, video and data.

All of the above

 

The maximum cable length of a LAN is _____

Fixed

Unlimited

Fixed and Unlimited in different conditions

None of these

 

Jitter is significance for ------------------

Voice

Video

Data

All of above

 

The routing table contains information about the ………………immediately around it.

topology of the network

destination

both of the above

none of the above

 

Which of the following is called virtual channel?

Connection in VCI

Connection in ATM

Connection in virtual circuit

None of the above

 

If a bridge builds up address list for each segment that consists of physical addresses of the computer attached to that segment. So, when the bridge boots, the size of list will be__ for each segment.

3

2

1

0

 

Asynchronous Transfer Mode uses small fixed size cell. Each cell consist of ----------- octets.

55

53

52

51

 

Which of the following statement is true regarding ATM?

ATM is a single technology that is designed to meet the goals of both LANs and WANs.

ATM uses the concept of connection-oriented networking.

Both (a) and (b)

None of the above

 

 

Frame forwarding of a bridge is based on _________.

Select correct option:

Layer 3 source address

Layer 3 destination address

Layer 2 destination address

Layer 2 Source address

 

The process of forwarding the packets of information is called…………….

Routing

Switching

Communication

None of the above

 

Which one of the following is a property of static routing?

It is inflexible

It is done at boot time

It has low network overload

All of the above

 

According to a bridges

Performance, if both the sauces and destination are on the same segment

It forward the frame to the other segment

It does not forward the frame to the other segment

It does not forward the frame to the same segment

It forwards the frame to every other segment

 

What will be the bandwidth rate for future (possibly 10 Gigabyte) Ethernet?

500 MHz

550 MHz

600 MHz

650 MHz

 

Asynchronous Transfer Mode uses the concept of …………..

Connection-less network

Connection-oriented network

The fiber-modem converts data into _________ then transmits cover the optional fiber

Pulses of light

Electrons

Electromagnetic signals

None of these

 

 How many methods exist for computing routing table?

5

4

3

2

 

To span long distance or many computers, networks must replace shared medium with ………..

Segment transformation

Fiber optics

Packet switches

None of the above

 

Which of the following statement is true regarding Distance-vector routing?

It is very simple to implement.

Packet switch updates own routing table first

It is used in RIP

All of the above

 

What will be the bandwidth rate for 1000Base-T Gigabyte or ATM?

100 MHz

150 MHz

200 MHz

250 MHz

 

 

CBR stands for…………….

Constant Byte Rate

Constant Bit Rate

Connection break Recovery

None of the above

 

The routing table in interior and exterior switches has which one of the following?

It should have next hop for each possible destination

The next hop in table must be on shortest path to destination

Both (a) and (b)

None of the above

 

Which one of the following is a method for computing routing table information?

Manual entry

Static routing

Boot time routing

None of the above

Which one of the following is the responsibility of Djikstra' algorithm?

To compute the shortest path between two nodes

To extract next hop information from path information

To insert next hop information into routing table

All of the above

 

Routing table is used to keep the information about…………….

Destination

Medium of transmission

Routers used in network

All of the above

 

Frame relay is………………….

Connection oriented service

Connectionless service

It is typically ranges from 5Mbps to 1000Mbps.

None of the above

 

Which of the following is not a guided medium?

Twisted-pair

cable Fiber-optic cable

Atmosphere

Coaxial cable

 

Which of the following statement is wrong regarding PVC?

PVC last as long as the customer pay the periodic fee for its use.

Forwarding tables are automatically restored after power of equipment failure.

Forwarding table entries for PVC's are dynamically configured.

All of the above are wrong

 

Which of the following statement is true regarding ATM?

ATM is a single technology that is designed to meet the goals of both LANs and WANs.

ATM uses the concept of connection-oriented networking.

Both (a) and (b)

None of the above

 

Djikstra's algorithm is used to compute the……………….

shortest path between two nodes

number of nodes used in the network

distance between different nodes

none of the above

 

If a link or a packet switch fails then which one of the following would possibly be happened?

Link would be reestablished

Request to change failed hardware would appear

The packet switch will modify the tables

None of the above

 

 

The routing contains information about immediately around it

Topology of the network

Destination

Both of the above

None of the above

 

SMDS is ……………………

Connectionless service

Connection oriented service

Used for delivering blocks of data

None of the above

 

The process of forwarding the packets of information is called

Routing

Switching

Communication

None of the above

 

The sharing of a medium and its link by two or more devices is called

modulation

encoding

line discipline

multiplexing

 

 

 

Which multiplexing technique transmits analog signals?

FDM

TDM

WDM

(a) and (c)

 

Which multiplexing technique transmits digital signals?

FDM

TDM

WDM

None of above

 

Which multiplexing technique shifts each signal to a different carrier frequency?

FDM

TDM

Both (a) and (b)

None of above

 

In synchronous TDM, for n signal sources of the same data rate, each frame contains _______ slots.

n

n+1

N-1

O to n

 

Which multiplexing technique involves signals composed of light beams?

FDM

TDM

WDM

None of above

 

_________ Utilization is the use of available bandwidth to achieve specific goals.

Frequency

Bandwidth

Amplitude

None of the above

 

________ can be achieved by using multiplexing; ______ can be achieved by using spreading.

Efficiency; privacy and antijamming

Privacy and antijamming; efficiency

Privacy and efficiency; antijamming

Efficiency and antijamming; privacy

 

________ is the set of techniques that allows the simultaneous transmission of multiple signals across a single data link.

1; n

1:1

n;1

n;n

 

 

The word ______ refers to the portion of a _______ that carries a transmission.

channel; link

link; channel

line; channel

line; link

 

 ______ can be applied when the bandwidth of a link (in hertz) is greater than the combined bandwidths of the signals to be transmitted.

TDM

FDM

Both (a) or (b)

Neither (a) or (b)

 

FSM is an _________technique.

Analog

Digital

Either (a) or b)

None of the above

 

____ is designed to use the high bandwidth capability of fiber-optic cable.

FDM

TDM

WDM

None of the above

 

 

_____ is a digital multiplexing technique for combining several low-rate channels into one high-rate one.

FDM

TDM

WDM

None of the above

 

____ is designed to use the high bandwidth capability of fiber-optic cable.

FDM

TDM

WDM

None of the above

 

______ is an analog multiplexing technique to combine optical signals.

FDM

TDM

WDM

None of the above

 

_____ is a digital process that allows several connections to share the high bandwidth of a link.

FDM

TDM

WDM

None of the above

 

_____ is a digital multiplexing technique for combining several low-rate channels into one high-rate one.

FDM

TDM

WDM

None of the above

 

Djikstra's algorithm is used to compute the……………….
shortest path between two nodes
number of nodes used in the network
distance between different nodes
none of the above

 

 

 

The routing table in interior and exterior switches has which one of the following?
None of the above

 

Which one of the following is the responsibility of Djikstra' algorithm

To compute the shortest path between two nodes

To extract next hop information from path information

To extract next hop information from path information

None of above

What will be the bandwidth rate for short distance 10Base-T

16mhz

20mhz

100mhz

150mhz

 

What will be the bandwidth rate for older, low-speed network, and analog telephones

16

20

24

30

 

How many methods exist for building routing table?

1

2

3

4

 

Which of the following statement is wrong regarding ATM?

It is a single technology for voice, video and data

it has low jitter and high capacity.

it uses fixed size, small cells, 48 octet's data

None of the above

 

In Asynchronous Transfer Mode VPI/VCI fields indentify the cells

Source

Destination

port@

none

 

The physical addressing in a WAN is similar as in LAN in the way................

The data is transmitted in packets equivalent to frames.

Each packet has a format with header.

The packet header includes destination and source addresses.

All of the above

 

 

 

In Asynchronous Transfer Mode VPI/VCI fields indentify the cells--------------

Which one of the following is a method for computing routing table information?

Manual entry

Boot time routing

 Static routing

None of the above

 

All destinations on same switch have same

Router

Information

Next hop

None of the above

 

Which of the following statement is wrong regarding ATM?

It is a single technology for voice, video and data

It has low jitter and high capacity.

It uses fixed size, small cells, 48 octet's data

None of the above

 

Which one of the following is the responsibility of Djikstra' algorithm?

To compute the shortest path between two nodes

To extract next hop information from path information

To insert next hop information into routing table

All of the above

 

Which of the following statement is true regarding Link-state routing?

Network topology is separated from route computation.

Each switch builds its own routing tables.

Link-state routing uses Djikstra's algorithm.

All of the above

 

Jitter is significance for ------------------

Voice

Video

Data

All of above

 

The routing table contains information about the ………………immediately around it.

topology of the network

destination

both of the above

none of the above

 

 

 

 

Which one of the following is a property of dynamic routing?

Select correct option:

It is inflexible

It has low network overload

It can work around network failure

All of the above

 

An exterior switch is one with which ………………….

Select correct option:

Computers are attached

No computer is attached

hubs are attached externally

None of the above

 

Which of the following statement regarding ATM is true?

Select correct option:

Connections in ATM are called virtual channels

The VC is identified by a 24-bit value formed from the VPI

Both (a) and (b)

None of the above

 

The fiber-modem coverts digital data into _______ then transmits over the optical fiber

Select correct option:

Pulses of light

Electrons

Electromagnetic signals

None of these

 

 

_______network topology is a bus but wiring topology is a star

Select correct option:

 10Base-T

 Ring

 10Base-W

 Star

 

Which of the following is not a guided medium?

Select correct option:

Twisted-pair cable

Fiber-optic cable

Atmosphere

Coaxial cable

 

 

A system with redundant bridges might have a problem with_______ in the system.

Select correct option:

Filters

Spanning Trees

Addressing

Loop

 

Repeaters are used when ______ communication is carries out

Select correct option:

Optical fiber

Twisted Pair

Copper wire

All type of

 

The mechanism of extending the optical fiber across several kilometers is very successful because delays on optical fiber are very _____ and bandwidth is very _____

Select correct option:

Low, High

High, Low

High, High

Low, Low

 

To span long distances or many computers, networks must replace shared medium with............

Select correct option:

 segment transformation

 fiber optices

 packet switches

 None of the above

 

Which one is incorrect statement?

Select correct option:

Hub wiring centralizes electronics and connections. It makes management easier

No Transceiver allows computers to be powered off or disconnected from network without distracting other communication

Transceiver may be located in an inconvenient place in any situation

None of these

 

An interior switch is one with which ………………….

Select correct option:

Computers are attached

No computer is attached

Computers are attached internally

None of the above

--

Zindagi mein 2 Logo ka buhat khayal rahkoooo
Ist woh jiss ney tumhari jeet ke Liye buhat kuch hara hoo

(Father)

2nd woh jiss ko tum ney har dukh me pukaara hoo (Mother)

Regards,

Umair Saulat Mc100403250

--
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