CS610 Computer Network MidTerm Solved Papers

CS610 Computer Network Midterm Solved Papers

Question 1
No error detection scheme is perfect because transmission errors can affect the additional information as well as the data.
A
True
B
False
Question 2
_________ Program sends a message to a remote computer and reports whether the computer responds.
A
Ping
B
Traceroute
C
ICMP
D
None of the given
Question 3
_________ was especially concerned about the lack of high powered computers.
A
ARPA
B
IEEE
C
EIA
D
None of the given
Question 4
The term _________ is used to denote the definition of a packet used with a specific type of network.
A
Packet
B
Frame
C
Data
D
None of the given
Question 5
Computer networks are often called _________ because they use packet technology.
A
Ethernet
B
Switch networks
C
Packet networks
D
None of the given
Question 6
_________ have advantages arisen from the size and ease of computation.
A
CRC
B
Parity
C
Checksums
D
None of given
Question 7
Most LANs that employ ring topology use an access mechanism known as _________.
A
CSMA/CD
B
CSMA/CA
C
TOKEN PASSING
D
None of the given
Question 8
IEEE LLC/SNAP header is _________, which is used to specify the type of data.
A
8 octets
B
8 bytes
C
8 bits
D
None of the given
Question 9
Formally named _________ informally known as the twisted pair Ethernet or TP Ethernet.
A
10 Base 2
B
10 Base 5
C
10 Base T
D
None of the given
Question 10
An interface for twisted pair Ethernet must have an _________ connector, and must generate signals according to the_________ specification.
A
RJ-45, 10 Base T
B
RJ-45, 10 Base 5
C
BNC, 10 Base 2
D
BNC, 10 Base T
Question 11
A bridges function in the _________ layers(s).
A
Physical (MAC)
B
Data link
C
Network
D
Physical (MAC) and Data link
Question 12
A Bridge can _________.
A
Filter a frame
B
Forward a frame
C
Extend a LAN
D
Do all the above
Question 13
A Bridge forwards or filters a frame by comparing the information in its address table to the frame’s _________.
A
Layer 2 source address
B
Source node’s physical address
C
Layer 2 destination address
D
Layer 3 destination address
Question 14
_________ computes shortest paths in a graph by using weights on edges as a measure of distance.
A
Greedy algorithm
B
Distance vector algorithm
C
Dijksta’s algorithm
D
None of the given
Question 15
_________ is used for audio and video, since these have predefined maximum data rates.
A
Constant Bit Rate (CBR) service
B
Variable Bit Rate (VBR) service
C
Available Bit Rate (ABR) service
D
None of the given
Question 16
Unlike Frame Relay and ATM, SMDS (Switched multi-megabit Data service) offers_________.
A
Connectionless service paradigm
B
Connection oriented service paradigm
C
Both Connectionless and Connection-oriented service paradigm
D
None of the given
Question 17
A network with throughput T and delay D has a total of _________ bit in transit at any time.
A
T / D
B
T x D
C
T + D
D
None of the given
Question 18
ATM is designed to work on _________.
A
Twisted Pair
B
Coaxial
C
Radio Frequency
D
Fiber
Question 19
Computers attached to an Ethernet use _________ in which a computer waits for the ether to be idle before transmitting a frame.
A
CSMA/CD
B
CSMA/CA
C
TOKEN PASSING
D
None of the given
Question 20
FDDI can transmits data at a rate of _________.
A
100 million bits per second
B
10 million bits per second
C
1000 million bits per second
D
None of the given
Question 21
In Point-to-Point topology there are two topologies.
A
Star and Tree
B
Tree and Ring
C
Star and Ring
D
Star and Tree
E
None of the given
Question 22
_________ has no way to determine the cause of the problem.
A
ICMP
B
Ping
C
Trace route
D
None of the given
Question 23
The term _________ refers to the general concept of a small block of data.
A
Packet
B
Frame
C
Data
D
None of the given
Question 24
_________scheme, which is designed to help detect transmissions errors, send one extra bit of information with each character.
A
Parity
B
Checksums
C
CRC
D
None of given
Question 25
Local Talk is a LAN technology that employs _________.
A
Bus topology
B
Ring topology
C
Star topology
D
None of the given
Question 26
Ethernet uses a _________ bit static addressing scheme in which each device is assigned a unique address by the manufacturer.
A
64
B
48
C
32
D
8
Question 27
Formally named _________informally known as the thick wire Ethernet or Thick net.
A
10 Base 2
B
10 Base 5
C
10 Base T
D
None of the given
Question 28
The maximum size of an Ethernet segment is _________.
A
250 meters
B
500 meters
C
700 meters
D
None of the given
Question 29
_________ is used for compressed audio and video where the data rate depends on the level of compression that can be achieved.
A
Constant Bit Rate (CBR) service
B
Variable Bit Rate (VBR) service
C
Available Bit Rate (ABR) service
D
None of the given
Question 30
Basic LAN technologies such as Ethernet, Token Ring, and FDDI use a _________.
A
Connectionless service paradigm
B
Connection-oriented service paradigm
C
Both Connectionless and Connection-oriented service paradigm
D
None of the given
Question 31
The product of delay and throughput measures the _________ of data that can be present on the network.
A
Area
B
Volume
C
Length
D
None of the given
Question 32
One repeater _________, two repeaters _________ the maximum cable length limitation.
A
doubles, triple
B
square roots, cude roots
C
and, triple
D
doubles, cancel
Question 33
A network uses a _________ if all computers attach to a central point.
A
Star Topology
B
Ring Topology
C
Bus Topology
D
None of the given
Question 34
A typical port on an ATM switch operates at __________ or higher.
A
OC-2 speed (155Mbps)
B
OC-3 speed (100Mbps)
C
OC-3 speed (155Mbps)
D
OC-3 speed (155Gbps)
Question 35
Which of the following is a connecting device?
A
Bridge
B
Repeater
C
Hub
D
All the given
Question 36
The third field of the header consists of _________ bit Ethernet frame type.
A
48
B
32
C
16
D
8
Question 37
An _________ method, the network hardware designers specify how type information is included in the frame and the value use to identify various frame types.
A
Explicit frame type
B
Ideal frame type
C
Implicit frame type
D
None of the given
Question 38
The Fast Ethernet hardware operates at a rate of _________.
A
10 Mbps
B
100 Mbps
C
1000 Mbps
D
None of the given
Question 39
In _________, network occupies larger areas like cities & countries.
A
LAN
B
WAN
C
MAN
D
None of the given
Question 40
In _________, network occupies the smaller area like a room a floor or a building.
A
LAN
B
WAN
C
MAN
D
None of the given
Question 41
_________ has a jitter zero.
A
None of the given
B
Virtual Private Network
C
Isochronous Network
D
Asynchronous Network
Question 42
ATM assigns each VC a _________ identifier that is divided two parts to produce a hierarchy.
A
21-bit
B
22-bit
C
23-bit
D
24-bit
Question 43
Most WAN systems include a mechanism that can be used to eliminate the common case of duplication routing is called _________.
A
Hierarchal address
B
Default route
C
Shortest path
D
None of the given
Question 44
The next hop to which a packet is sent depends only on __________.
A
Packet’s destination
B
Packet’s original source
C
Path the packet has taken
D
None of the given
Question 45
When an application _________ data, it makes a copy of the data available to all other computers on the network.
A
Broadcasting
B
Multicasting
C
Unicasting
D
None of the given
Question 46
A _________ provide a mechanism that a customer can use to set a physical address.
A
Static addressing scheme
B
Configurable addressing scheme
C
Dynamic addressing scheme
D
None of the given
Question 47
Computers attached to an ether use _________ in which a computer waits for the ether to be idle before transmitting a frame.
A
CSMA/CD
B
CSMA/CA
C
TOKEN PASSING
D
None of the given
Question 48
A network that uses _________ usually consists of a single long cable to which computer attach.
A
Star Topology
B
Ring Topology
C
Bus Topology
D
Bus and Ring Topology
Question 49
No error detection scheme is perfect because transmission errors can affect _________.
A
Data
B
Additional Information
C
Additional information & data
D
Transmission medium
Question 50
Star topology is the kind of _________.
A
Tree topology
B
Point-to-point topology
C
Broadcast topology
D
Ring topology
Question 51
The Gigabit Ethernet hardware operates at a rate of _________.
A
10 Mbps
B
100 Mbps
C
1000 Mbps
D
1000 Gbps
Question 52
Fixed network is a type of networks which is classified with respect to the _________ factor.
A
Size
B
Connectivity
C
Medium
D
Mobility
Question 53
A network uses _________ to arrange computers to be connected in a single closed loop.
A
Star Topology
B
Dual Ring Topology
C
Ring Topology
D
Bus Topology
Question 54
Hardware that calculates a CRC uses two simple components.
A
AND unit and XOR unit
B
Shift register and XOR unit
C
Shift register & AND unit
D
Shift register and shift XOR unit
Question 55
_________ is also called self healing network.
A
ATM
B
FDDI
C
Token Ring
D
None of the given
Question 56
Some applications have large data transfer. In this way they hold the network for long time. This problem can be eliminated by _________.
A
Divide the application into small block or chunks called ‘Packets’.
B
Divide the application into small block or chunks called ‘Segments’.
C
Divide the data into small block or chunks called ‘Segments’.
D
Divide the data into small block or chunks called ‘Packets’.
Question 57

For how much time would other computers be in wait while one computer was transferring 56MB file with packet size of 1000 bytes and transmission speed of 56 Kbps _________.

A
0.143 sec
B
0.243 0.343
C
0.343 0.343
D
0.443 0.343
Question 58

LAN that use ATM technology have a _________.

A
Bus topology
B
Star topology
C
Ring topology
D
Mesh topology
Question 59

The Ethernet standard specifies that frames are sent using the _________.

A
Differential Manchester
B
Not Return to Zero (NRZ)
C
Manchester Encoding
D
Return to Zero (RZ)
Question 60

LAN interface may use _________ to copy frame data directly from main memory.

A
DMA
B
FDDI
C
CSMA/CD
D
None of the given
Question 61

LAN and WAN are classified according to their _________.

A
Size
B
Connectivity
C
Medium
D
Mobility
Question 62

For how much time would other computers be in wait while one computer was transferring 56 MB file with transmission speed of 56 Kbps _________.

A
10 Sec
B
11 Sec
C
12 Sec
D
13 Sec
Question 63

_________ network topology is a bus but wiring topology is a star.

A
10Base-T
B
Ring
C
10Base-W
D
Star
Question 64

ATM is also called _________.

A
Label rewriting
B
Label switching system
C
Label rewriting and label switching system
D
All of above
Question 65

The most important task a bridge performs is _________.

A
Packet switching
B
Line controlling
C
Noise controlling
D
Frame filtering
Question 66
ABR stands for_________.
A
Asynchronous Bit Rate
B
Asynchronous Byte Recovery
C
Asynchronous Bit Redundancy
D
Available Bit Rate
Question 67

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

A
16 MHz
B
20 MHz
C
100 MHz
D
150 MHz
Question 68

The maximum cable length of a LAN is _________.

A
Fixed
B
Unlimited
C
Fixed and Unlimited in different conditions
D
None of these
Question 69
SMDS is _________.
A
Connectionless service
B
Connection oriented service
C
Used for delivering blocks of data
D
None of the above
Question 70
All destinations on same switch have same ___________.
A
Router
B
Information
C
Next hop
D
None of the above
Question 71

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

A
Link would be reestablished
B
Request to change failed hardware would appear
C
The packet switch will modify the tables
D
None of the above
Question 72

_________ is effectively a very short Ethernet with very long AUI cables. It can be connected into larger Ethernet.

A
RJ-45
B
HUBS
C
10Base-T
D
None of these
There are 72 questions to complete.
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