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ECE 2112B Data Communications Final Exam - Set B

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

Which of the following is a PAN?

a)

WiFi

b)

zigbee

c)

2G

d)

FHSS

2.

A class 3 bluetooth can reach a distance of 100 meters.

a)

True

b)

False

3.

Bluetooth Low Energy is also known as WiBree.

a)

True

b)

False

4.

The standard for Zigbee is ________.

a)

IEEE 802.3

b)

IEEE 802.11

c)

IEEE 802.15.2

d)

IEEE 802.15.4

5.

Advanced Mobile Telephone Systems (AMTS) was used in the 1st generation of Mobile Network Technologies.

a)

True

b)

False

6.

The main drawback of the 1G Mobile Network Technologies is interoperability with different countries.

a)

True

b)

False

7.

A Mobile Network technology that uses TDMA to multiplex up to 8 calls per channel in the 900 and 1800 MHz bands.

a)

AMTS

b)

TACS

c)

CDMA

d)

GSM

8.

It enables cellular network operators to provide internet access, instant messaging, and multimedia messaging using second generation of Mobile Networks.

a)

TACS

b)

AMTS

c)

GPRS

d)

FHSS

9.

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.

a)

True

b)

False

10.

4G uses network wide based IP based packet switching.

a)

True

b)

False

11.

________ is a type of malware that takes control over a device without user knowledge.

a)

Virus

b)

Trojan horse

c)

Worm

d)

Man-in-the-middle

12.

________ is a technique to improve a malicious website's ranking through increasing traffic to the malicious website.

a)

Phishing

b)

Vulnerability exploitation

c)

DDoS

d)

SEO poisoning

13.

Which of the following is a good practice to protect devices and networks?

a)

Use antivirus and antispyware

b)

Keep firewall on

c)

Update OS

d)

All of the choices

14.

________ is a type of firewall that hides private addresses of hosts in a local area network.

a)

Host-based firewall

b)

Proxy server

c)

NAT firewall

d)

Network layer firewall

15.

________ is a type of hacker that tests systems with permission in order to identify system vulnerabilities.

a)

White Hat

b)

Gray Hat

c)

Black Hat

d)

Red Hat

16.

________ is a type of hacker that compromises systems without permission.

a)

White Hat

b)

Gray Hat

c)

Black Hat

d)

Red Hat

17.

When using port scanners, a port will be shown as ______ if there is no reply from the host?

a)

open

b)

closed

c)

filtered

d)

half open

18.

______ is a stage in the cyber defense kill chain where attacker gains remote access to the equipment.

a)

Reconnaissance

b)

Weaponization

c)

Delivery

d)

Command and Control

19.

It has the ability to block traffic based on a positive rule or signature match.

a)

IPS

b)

IDS

c)

IDPS

d)

ILD

20.

An open standard protocol that allows an end user's credentials to access third party applications without exposing the user's password.

a)

AAuth 2.0

b)

OAuth 2.0

c)

Google Authenticator

d)

Two Factor Authenticator

21.

Which of the following is true about CDM?

a)

Each user is assigned a pseudo random code, which should be orthogonal to all the other codes.

b)

The receiver has prior knowledge of the orthogonal code

c)

The orthogonal code spreads the signal such that the resulting signal will have higher bandwidth.

d)

All of the choices

22.

______ is a method that transmits digital information which are cut into smaller pieces of information that may take different routes.

a)

Circuit switching

b)

Packet switching

c)

Message switching

23.

______ is a packet switching approach wherein each packet takes different routes and is routed depending on the identifiers in the packet.

a)

Virtual circuit

b)

Packet switching

c)

Store and forward

d)

Hold and forward

24.

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.

a)

Crossbar switch

b)

TSI Incorrect

c)

TDM Bus

d)

None of the choices

25.

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.

a)

Crossbar switch

b)

TSI incorrect

c)

TDM Bus

d)

None of the choices

26.

Which of the following is an example of a copper guided transmission medium?

a)

Waveguide

b)

Coaxial cable

c)

Fiber optic cable

d)

All of the choices

27.

Which of the following is used to transmit electrical signals?

a)

Coaxial cable

b)

Fiber optic cable

c)

Waveguide

d)

All of the choices

28.

Which of the following is used to transmit radio waves?

a)

Coaxial cable

b)

Fiber optic cable

c)

Waveguide

d)

None of the choices

29.

Which of the cables was used for 10Base2 Ethernet?

a)

RG59

b)

RG58

c)

RG11

d)

RJ45

30.

Which of the cables was used for 10Base5 Ethernet?

a)

RG59

b)

RG58

c)

RG11

d)

RJ45

31.

______ is a frame relay field used to inform the destination when there is congestion.

a)

DLCI

b)

DE

c)

FECN

d)

BECN

32.

Which of the following is true about ATM technology?

a)

It uses statistical time division multiplexing

b)

It is a connectionless protocol.

c)

Its frame contains 53 bytes for payload.

d)

All of the choices

33.

Which of the following is true about ISDN?

a)

It integrates speech and data on the same line of the PSTN.

b)

It is a packet switched network that provides digital transmission of voice and data over telephone copper lines.

c)

It can be used on optical fiber cables.

d)

All of the choices

34.

______ refers to one of the addresses in an ATM cell that indicates the channel number in the current path.

a)

VPI

b)

VCI

c)

PTI

d)

CLP

35.

Which of the following ISDN channels is used for voice and data only?

a)

B

b)

D

c)

H

d)

All of the choices

36.

What is the data rate of 1 DSO channel?

a)

4 kbps

b)

8 kbps

c)

56 kbps

d)

64 kbps

37.

______ is a frame relay field that serves as the address of the frame relay connection.

a)

DLCI

b)

MAC

c)

FECN

d)

BECN

38.

Which type of equalization is used in leased lines that automatically adjusts the frequency response?

a)

Adaptive Equalization

b)

Preset Equalization

c)

Reset Equalization

d)

Parametric Equalization

39.

What is the data rate of E0 line?

a)

4 kbps

b)

8 kbps

c)

56 kbps

d)

64 kbps

40.

A ______ satellite has an orbital period that is the same as the rotation rate of the Earth.

a)

Geosynchronous

b)

Geosynchronous

c)

Geochronous

d)

Geoplesiochronous

41.

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)

a)

ETSI

b)

IEEE

c)

ISO

d)

ITU

42.

IETF is a technical advisory group of the Internet Society which oversees the architecture and procedures used in Internet.

a)

True

b)

False

43.

RFC are documents maintained by IETF containing information about Internet Protocols. (acronym)

a)

RFC

b)

TCP

c)

HTTP

d)

DNS

44.

An organization that promotes long term research of importance to the evolution of the future internet.

a)

IETF

b)

IRTF

c)

IAB

d)

IEEE

45.

It is non treaty organization whose membership is comprised mainly of standards organizations of various countries and responsible for Open Systems Interconnect OSI model.

a)

IEEE

b)

IETF

c)

ITU

d)

ISO

46.

It is the United Nations specialized agency for information and communication technologies ICTs.

a)

IEEE

b)

IETF

c)

ITU

d)

ISO

47.

An ITU series of standards that covers the global information infrastructure, Internet protocol aspects, next generation networks, Internet of Things and smart cities.

a)

W

b)

X

c)

Y

d)

Z

48.

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.

a)

Start Frame Delimeter

b)

Preamble

c)

Pad

d)

FCS

49.

How many bytes are allocated for the Ethernet address?

a)

4

b)

5

c)

6

d)

8

50.

IEEE 802.15.1 is the equivalent standard for Bluetooth.

a)

True

b)

False