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WorksheetsECE 2112B Data Communications Final Exam - Set B
Total questions: 50
Worksheet time: 25mins
Which of the following is a PAN?
WiFi
zigbee
2G
FHSS
A class 3 bluetooth can reach a distance of 100 meters.
True
False
Bluetooth Low Energy is also known as WiBree.
True
False
The standard for Zigbee is ________.
IEEE 802.3
IEEE 802.11
IEEE 802.15.2
IEEE 802.15.4
Advanced Mobile Telephone Systems (AMTS) was used in the 1st generation of Mobile Network Technologies.
True
False
The main drawback of the 1G Mobile Network Technologies is interoperability with different countries.
True
False
A Mobile Network technology that uses TDMA to multiplex up to 8 calls per channel in the 900 and 1800 MHz bands.
AMTS
TACS
CDMA
GSM
It enables cellular network operators to provide internet access, instant messaging, and multimedia messaging using second generation of Mobile Networks.
TACS
AMTS
GPRS
FHSS
HSDPA is a 3G packet based data service in W CDMA downlink with data transmission up to 8 to 10 Mbit/s over a 5 MHz bandwidth in WCDMA downlink.
True
False
4G uses network wide based IP based packet switching.
True
False
________ is a type of malware that takes control over a device without user knowledge.
Virus
Trojan horse
Worm
Man-in-the-middle
________ is a technique to improve a malicious website's ranking through increasing traffic to the malicious website.
Phishing
Vulnerability exploitation
DDoS
SEO poisoning
Which of the following is a good practice to protect devices and networks?
Use antivirus and antispyware
Keep firewall on
Update OS
All of the choices
________ is a type of firewall that hides private addresses of hosts in a local area network.
Host-based firewall
Proxy server
NAT firewall
Network layer firewall
________ is a type of hacker that tests systems with permission in order to identify system vulnerabilities.
White Hat
Gray Hat
Black Hat
Red Hat
________ is a type of hacker that compromises systems without permission.
White Hat
Gray Hat
Black Hat
Red Hat
When using port scanners, a port will be shown as ______ if there is no reply from the host?
open
closed
filtered
half open
______ is a stage in the cyber defense kill chain where attacker gains remote access to the equipment.
Reconnaissance
Weaponization
Delivery
Command and Control
It has the ability to block traffic based on a positive rule or signature match.
IPS
IDS
IDPS
ILD
An open standard protocol that allows an end user's credentials to access third party applications without exposing the user's password.
AAuth 2.0
OAuth 2.0
Google Authenticator
Two Factor Authenticator
Which of the following is true about CDM?
Each user is assigned a pseudo random code, which should be orthogonal to all the other codes.
The receiver has prior knowledge of the orthogonal code
The orthogonal code spreads the signal such that the resulting signal will have higher bandwidth.
All of the choices
______ is a method that transmits digital information which are cut into smaller pieces of information that may take different routes.
Circuit switching
Packet switching
Message switching
______ is a packet switching approach wherein each packet takes different routes and is routed depending on the identifiers in the packet.
Virtual circuit
Packet switching
Store and forward
Hold and forward
In circuit switching, ______ is a method wherein paths are separated spatially and requires interconnection in a grid to complete the end-to-end physical link.
Crossbar switch
TSI Incorrect
TDM Bus
None of the choices
In circuit switching, ______ is a method wherein a path between an output and input is managed by a control unit depending on the allotted time slot.
Crossbar switch
TSI incorrect
TDM Bus
None of the choices
Which of the following is an example of a copper guided transmission medium?
Waveguide
Coaxial cable
Fiber optic cable
All of the choices
Which of the following is used to transmit electrical signals?
Coaxial cable
Fiber optic cable
Waveguide
All of the choices
Which of the following is used to transmit radio waves?
Coaxial cable
Fiber optic cable
Waveguide
None of the choices
Which of the cables was used for 10Base2 Ethernet?
RG59
RG58
RG11
RJ45
Which of the cables was used for 10Base5 Ethernet?
RG59
RG58
RG11
RJ45
______ is a frame relay field used to inform the destination when there is congestion.
DLCI
DE
FECN
BECN
Which of the following is true about ATM technology?
It uses statistical time division multiplexing
It is a connectionless protocol.
Its frame contains 53 bytes for payload.
All of the choices
Which of the following is true about ISDN?
It integrates speech and data on the same line of the PSTN.
It is a packet switched network that provides digital transmission of voice and data over telephone copper lines.
It can be used on optical fiber cables.
All of the choices
______ refers to one of the addresses in an ATM cell that indicates the channel number in the current path.
VPI
VCI
PTI
CLP
Which of the following ISDN channels is used for voice and data only?
B
D
H
All of the choices
What is the data rate of 1 DSO channel?
4 kbps
8 kbps
56 kbps
64 kbps
______ is a frame relay field that serves as the address of the frame relay connection.
DLCI
MAC
FECN
BECN
Which type of equalization is used in leased lines that automatically adjusts the frequency response?
Adaptive Equalization
Preset Equalization
Reset Equalization
Parametric Equalization
What is the data rate of E0 line?
4 kbps
8 kbps
56 kbps
64 kbps
A ______ satellite has an orbital period that is the same as the rotation rate of the Earth.
Geosynchronous
Geosynchronous
Geochronous
Geoplesiochronous
ETSI is the European Standards Organization which is a recognized regional standards body dealing with telecommunications, broadcasting and other electronic communications networks and services. (acronym)
ETSI
IEEE
ISO
ITU
IETF is a technical advisory group of the Internet Society which oversees the architecture and procedures used in Internet.
True
False
RFC are documents maintained by IETF containing information about Internet Protocols. (acronym)
RFC
TCP
HTTP
DNS
An organization that promotes long term research of importance to the evolution of the future internet.
IETF
IRTF
IAB
IEEE
It is non treaty organization whose membership is comprised mainly of standards organizations of various countries and responsible for Open Systems Interconnect OSI model.
IEEE
IETF
ITU
ISO
It is the United Nations specialized agency for information and communication technologies ICTs.
IEEE
IETF
ITU
ISO
An ITU series of standards that covers the global information infrastructure, Internet protocol aspects, next generation networks, Internet of Things and smart cities.
W
X
Y
Z
In Ethernet, it is an alternating pattern of ones and zeros that tells receiving stations that a frame is coming, and that provides a means to synchronize the frame reception portions of receiving physical layers with the incoming bit stream.
Start Frame Delimeter
Preamble
Pad
FCS
How many bytes are allocated for the Ethernet address?
4
5
6
8
IEEE 802.15.1 is the equivalent standard for Bluetooth.
True
False
