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Intro to data comm midterm review Flashcards | StudBud
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Intro to data comm midterm review
Intro to data comm midterm review
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Questions
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Answers
1
________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation
Timing
Semantics
Syntax
All correct
2
Which type of data flow is shown in the image?
None
Duplex
Simplex
Half duplex
3
What was the networking model that was developed by DARPA?
DODNET
TCP/IP
OSI
HTTP/FTP/SMTP/UDP
4
With a bridge, 2 computers form LAN 1 and 3 form LAN 2. What is the bandwidth on LAN 1 at 10 Mbps?
10/3
10/4
None are correct
10/2
5
A repeater functions at which layer?
Transport layer
Physical layer
Network layer
Data Link layer
6
Frequency of failure and network recovery time after a failure are measures of the _______ of a network
Reliability
Performance
Feasibility
Security
7
The use of bridge reduces collisions
True
False
8
How many layers are in TCP/IP model?
Not listed
5
10
7
9
What are the types of Network?
LAN, MAN, WAN, PAN.
MAN, PAN, VLAN, LAN.
VLAN, PAN, Ethernet, Internet.
LAN, Ethernet, MAN, VLAN.
10
In a _______ connection, more than two devices can share a single link.
Primary
Point-to-point
Multipoint
Secondary
11
Value added to the header which is used to confirm that all information sent has been received
Data link layer
Checksum
Logical connection
Winsock
12
Which of the following provides the most reliable communication?
UDP
All correct
TCP
IP
13
Two computers connected with an Ethernet cable and playing the same game is an example of a ______?
MAN
LAN
PAN
WAN
14
How many characters are included in the MAC address?
10
16
12
6
15
Which of the following is not a network topology?
Ring
Bus
Loop
Star
16
Which is a
mathematical algorithm that totals all bits in transmitted data to detect errors.
None
Checksum
ARP
Both
17
Which topology requires a central controller or hub?
Ring
Bus
Mesh
Star
18
Which organization has authority over interstate and international commerce in the communications field?
ITU-T
ISOC
IEEE
FCC
19
Which one the fastest topology?
Bus
Mesh
Star
Ring
20
What do bridges do?
Reduce collision
Slow down network
Error detection
Increase collision
21
Which best describes a network spanning more than one building?
DAN
PAN
LAN
MAN
22
What is the name of the windows API for network applications that use TCP/IP protocols?
windock.dll
wintcpapi.dll
winsock.dll
winipcfg.dll
23
What does the term MAC Address stand for?
Multi Access Control
Media Access Control
Media Address Control
Multi Address Control
24
Which one of these standards are used by wireless?
803
None are correct
802.11
802.5
25
Which layer provides services to the user and acts as a bridge between the software and transport layer?
Application
Data Link
Physical
Network
26
In which topology is each node connected to every other node
Mesh
Bus
Ring
Star
27
Which of the following translates host names to IP addresses?
Gateway
Hub
Router
DNS
28
What protocol can be used to discover a MAC address?
ARP
HTTP
Telnet
SMTP
29
MCSE is certification established by
Internet Explorer
Firefox
Microsoft
Google chrome.
30
Which cable is the most expensive?
Twisted pair
Fibre optic
Co-axial cable
31
The goals of Fast Ethernet are:
To keep the same 48-bit address
Upgrade the data range to 100Mbps
To be compatible with standard Ethernet
All are correct
32
IEEE's Physical layer standards for wireless networking are established by which IEEE committee?
802.3
802.5
802.2
802.11
33
What does CRC stand for?
Cyclic Redundancy Check
Control Redundancy Circuit
Circuit Round trip Control
Cyclic Redundancy Control
34
A computer circuit board installed in a computer so that it can be connected to a network?
RJ45
Hub
Switch
NIC
35
What are the areas within an OS for protocol layer?
Device area, BASH area, SHELL area
User area, kernel area, device area
User area and device area
Kernel area, popcorn area, butter area
36
Which of the following devices is a PC component that connects the computer to the network
Gateway
Bridge
NIC
DNS Server
37
Hubs segment a network
False
True
38
In networking an agreed upon set of rules for how devices should communicate
Winsock
OSI
Protocol
Frame
39
_______ refers to two characteristics: when data should be sent and how fast it can be sent.
None are correct
Syntax
Semantics
Timing
40
What are the necessary components of data communication?
Channel, Router, Network, Message, Sender.
Switch, Sender, Message, Medium and Receiver.
Sender, Receiver, Message, Protocol.
Sender, Receiver, Message, Transmission media, Protocol.
41
The ____ is the physical path over which a message travels?
Protocol
Signal
Medium
All correct
42
The packet is the PDU at which layer?
Physical Layer
Application Layer
Data Link Layer
Network Layer
43
The set of rules for how we communicate is
Protocol
Logical
Protocol Layering
Application Layer
44
A television is an example of which transmission?
Full duplex
Half-duplex
Simplex
Automatic
45
The _______ is the physical path over which a message travels
All correct
Medium
Signal
Protocol
46
What does added Autonegotiation do?
It auto-negotiates with the network provider to give the highest speed
Both station/router to negotiate the mode and the range of operation
It allows the router to negotiate the data range of operation
It allows the station to negotiate the mode of operation
47
Which was the first network?
CSNET
ANSNET
ARPANET
NSFNET
48
What does VLAN do?
Separate networks within a network.
Combines separate networks
Send message by baseband
None of above
49
The PDU that is created at the data link layer. Contains information about the destination and host MAC address.
OSI
TCP
Protocol
Frame
50
What data object is sent through the Data Link layer?
Frames
Bits
Packets
Segments
51
A television broadcast is an example of _______ transmission
Half-duplex
Simplex
Automatic
Full-duplex
52
HUB is also known as?
Multiport repeater.
Denver international Application.
Data link interface Application
Single port listener.
53
Which address is used in the Physical layer?
IP address
MAC address
Port number
None are correct
54
What type of devices is typically used to create a VLAN? (extension/outside of slides)
Bridge
Hub
Router
Switch
55
A l
arge network designed to provide access to a specific geographic area, such as a large city is a
______
LAN
WAN
MAN
PAN
56
Which layer has messages as a data object PDU?
Network
Application
Transport
Data link
57
Which of the following is not a property of wave/signal?
Phase
Wavelength
Jitter
Amplitude
58
Which topology requires a central controller or hub?
Mesh
Bus
Ring
Star
59
Which cabling letter refers to fibre optic cable standards
X
E
All correct
L
60
Which of these layers uses MAC address?
Application
Data link
Physical
Network
61
On which layer does a Bridge work?
Layer 2 (data-link)
Application
Layer 4 (transport)
Layer 1 (physical)
62
Winsock is best described
Provides API connectivity for windows
Provides physical address for ARP
Provides Information
provides IP address for network layer
63
What does ARP stand for?
Address resolution Processor
Address Resolution Protocol
Account Resolution Protocol
Address Repeated protocol
64
What is throughput?
Measures amount of data transmitted
Make data suitable for transmission
Accomplish transmission
Measures difference between highest and lowest frequency
65
This layer of the TCP/IP model does not have a specific address
Physical
Data-link
Application
Network
66
With which layer is repeater associated?
Data-link
Network
Transport
Physical
67
Repeater operates in which layer of the OSI model?
Data Link layer
Physical layer
Network layer
Transport layer
68
Which network component connects a network to the broader internet? Known as the backbone of the internet
NIC
Modem
Gateway
Router
69
The following are the different API’s
Socket interface, transport layer interface, STREAM
LAN, Socket interface, ROUTERS
AP, ARP, OSP
RARP, TCP/IP, transport Layer interface
70
Which one is not a component of data communication?
Transmission media
Code
Protocol
Message
71
Responsible for creating a connection and moving packets over the internet?
Physical Layer
Data Link Layer
Transport Layer
Network Layer
72
_______ is the protocol suite that allows computers to internetwork together
TCP/IP
OSI
NCP
UNIX
73
What data object (PDU) is in the application layer?
Message
Bits
Frame
Segment/user datagram
74
What is the effective bandwidth of a 10 Mbps bus topology with 5 computers using CSMA/CD?
2
0.2
10
10/6
75
The unique number assigned to a network adapter by the manufacturer is referred to as the ________ address.
MAC
Network
SSID
IP
76
CSMA/CD stands for?
Carrier Sense Multiple Access /Collision Detection
Common Sense Multiple Access /Collision Detection
Carrier Sense Multiple Access /Collision Design
Common Sense Multiple Access /Collision Detective
77
How many layers does the OSI model have?
5
4
7
3
78
Which agency developed standards for physical connection interfaces and electronic signaling specifications?
ISO
ANSI
ITU-T
EIA
79
What is an example of a PAN?
Router and modem
Hub and switches
Netflix
Bluetooth device
80
Which devices modulate digital signals into analog signals that can be sent over traditional telephone lines?
Router
Modem
DNS
Gateway
81
Device that forwards data packets between computer networks is a ___________
Switch
Router
Hub
Repeater
82
What type of address do bridges read, and to which layer of the TCP/IP do bridges belong to?
IP addresses; the Data Link layer
IP addresses; the Network layer
MAC addresses; the Network layer
MAC addresses; the Data Link layer
83
A _____ connection provides a dedicated link between two devices?
Point to point
Primary
Secondary
Multipoint
84
Which of the following layer of TCP/IP model is an end to end layer
Physical
Transport
Data-Link
None are correct
85
Which of the following is NOT a component of data communication?
Receiver
Message
Sender
Program
86
The information to be communicated in a data communications system is the _______.
Message
Transmission
Medium
Protocol
87
A physical arrangement of computers, peripherals, and media is known as
Installation Diagram
Topology
Server
Roadmap
88
Which layer is responsible for creating a connection between a source computer and a destination computer via internet
Data Link Layer
Physical Layer
Network Layer
Application Layer
89
In _______ transmission, the channel capacity is shared by both communicating devices at alltimes.
Half-duplex
Half-simplex
Simplex
Full-duplex
90
An unauthorized user is a network _______ issue.
Security
All correct
Reliability
Performance
91
What command is used to view the MAC address of your NIC?
ipconfig all
Ping
ip config
config all
92
Communication between a computer and a keyboard involves ______________ transmission.
Automatic
Full-duplex
Simpelx
Half-duplex
93
A _______ connection provides a dedicated link between two devices.
Point-to-point
Primary
Multipoint
Secondary
94
Which of the following creates separate collision domain to reduce network traffic?
Repeater
Bridge
HUB
NIC
95
What address is used by Ethernet?
MAC address
Logical address
IP address
Port Address
96
What does a protocol define?
What data is communicated
How data is communicated
All are correct
When data is communicated
97
_______ refers to the structure or format of the data, meaning the order in which they are presented.
All correct
Syntax
Timing
Semantics
