ecee midterm reviewer

Duplex arrangement

A cordless telephone using separate frequencies for transmission in base and portable units is known as. Duplex arrangement Half duplex arrangement Either (a) or (b) Neither (a) nor (b)

Digital Subscriber Line

DSL

Wired phone access and ISP

DSL telcos provides which of the following services? Wired phone access ISP Wired phone access and ISP Network routing and ISP

distribution switch unit

DXU

Data link layer

The physical layer translates logical communication requests from the __ into hardware specific operations. Data link layer Network layer Transport layer Application layer

Router

Which of the following devices forwards packets between networks by processing the routing information included in the packet? Firewall Bridge Hub Router

combining and distribution unit

CDU

Cyclic redundancy check

CRC stands for __. Cyclic redundancy check Code repeat check Code redundancy check Cyclic repeat check

The gauge of the twisted-pair line and degree of electrical interference

Which of the following factors affect transmission rate in DSL? The gauge of the twisted-pair line Degree of electrical interference Shadow fading The gauge of the twisted-pair line and degree of electrical interference

Personal area network

Which of the following is an example of bluetooth? Wide area network Virtual private network Local area network Personal area network

Modem

Which of the following is used for modulation and demodulation? Modem Protocols Gateway Multiplexer None of the above

Layer 7 protocols

Which of the following layer protocols are responsible for user and the application program support such as passwords, resource sharing, file transfer, and network management? Layer 7 protocols Layer 6 protocols Layer 5 protocols Layer 4 protocols None of the above

Error control

Which one of the following is not a function of network layer? Routing Inter networking Congestion control Error control

Optical fiber

Which transmission media provides the highest transmission speed in a network? Coaxial cable Twisted pair cable Optical fiber Electrical cable

Dynamic routing

is known as adaptive routing which changes routing table according to change in topology

Static Routing

is known as non-adaptive routing which doesn't change routing table unless network administrator changes them manually

transceiver unit

TRU

Consists of software being run on the computer connected to the network

The application layer at a network: Establishes, maintains, and terminates virtual circuits Defines the user's part into the network Consists of software being run on the computer connected to the network All of the above None of the above

Network layer

The data link layer takes the packets from __ and encapsulates them into frames for transmission. Network layer Physical layer Transport layer Application layer

Packets

The network layer is concerned with __. Bits Frames Packets Bytes

Internet protocol

The network layer protocol for internet is Ethernet Internet protocol Hypertext transfer protocol File transfer protocol

Bit-by-bit delivery

The physical layer is concerned with __. Bit-by-bit delivery Process to process delivery Application to application delivery Part to part delivery

All of the mentioned

The physical layer provides __. Mechanical specifications of electrical connectors and cables Electrical specification of transmission line signal level Specification for IR over optical fiber All of the mentioned

battery fuse unit

BFU

base transceiver station

BTS

Digital modulation

Bits can be sent over guided and unguided media as analog signal by __. Digital modulation Amplitude modulation Frequency modulation Phase modulation

Upper layers: -network processes to applications -data representation -inter host communication Transport layer: -end-to-end connection -charge of reliable/unreliable transport of data Network layer: -data delivery -provides connectivity & path selection between 2 host systems Data link layer: -access to media -create, transmit, & receive packets Physical layer: -binary transmission -defines electrical, mechanical, procedural, & functional specifications for activating, maintaining, and deactivating the physical link

Define each layers of OSI model

energy control unit

ECU

Enhanced Data rates for GSM Evolution

EDGE

equipment identity register

EIR

Network layer

IPSec is designed to provide security at the __. Transport layer Network layer Application layer Session layer

Wireless networks

Extensible authentication protocol is authentication framework frequently used in __. Wired personal area network Wireless networks Wired local area network Wired metropolitan area network

gateway mobile switching center

GMSC

General Packet Radio Service

GPRS

Global System for Mobile Communications

GSM

home location register

HLR

All of the mentioned

Header of a frame generally contains __. Synchronization bytes Addresses Frame identifier All of the mentioned

A, B, C

Home internet access is provided by __. DSL Cable Cable A, B, C

7

How many layers are there in the ISO OSI reference model? 7 5 4 3

Long-Term Evolution

LTE

Media Access Control

MAC

Multiple Input, Multiple Output

MIMO

mobile station

MS

mobile switching center

MSC

Open Systems Interconnection

OSI

operation subsystem; maintenance

OSS

Optical Time Domain Reflectometer

OTDR

Plesiochronous Digital Hierarchy

PDH

public land mobile network

PLMN

power supply unit

PSU

Topology

Physical or logical arrangement of network is __. Topology Routing Networking Control

Synchronous Digital Hierarchy

SDH

subscriber identity module

SIM

trans-coding rate & adaptation unit

TRAU

Satellite access

StarBand/Starlink provides __. FTTH internet access Cable access Telephone access Satellite access

Process to process communication

Transport layer protocols deals with __. Application to application communication Process to process communication Mode to mode communication Man to man communication

User Datagram Protocol

UDP

Unshielded Twisted Pair

UTP

Overlay network

Which of the following computer network is built on the top of another network? Overlay network Prime network Prior network Chief network

Virtual Local Area Network

VLAN

visitor location register

VLR

Wideband Code Division Multiple Access

WCDMA

Wi-fi

WPA2 is used for security in __. Ethernet Bluetooth Wi-fi Email

Application Presentation Session Transport Network Data link Physical

What are the 7 layers of the OSI model?

All of the mentioned

What are the nodes in a computer network? The computer that routes the data The computer that terminates the data The computer that originates the data All of the mentioned

A collection of interconnected computers and devices that can communicate and share resources

What is a computer network? A device used to display information on a computer screen A collection of interconnected computers and devices that can communicate and share resources A type of software used to create documents and presentations The physical casing that protects a computer's internal components

A network of interconnected local area networks

What is internet? A network of interconnected local area networks A collection of unrelated computers Interconnection of wide area networks A single network

Open system interconnection

What is the full form of OSI? Optical service implementation Open service internet Open system interconnection Operating system interface

Simplex

What type of transmission is involved in communication between a computer and a keyboard? Half duplex Full duplex Simplex Automatic

Distributed system

When a collection of various computers appears as a single coherent system to its clients, what is this called? Mail system Networking system Computer network Distributed system

All of the mentioned

Which component is included in IP security? Authentication header (AH) Encapsulating security payload (ESP) Internet key exchange (IKE) All of the mentioned

Application

Which layer of OSI determines the interface of the system with the user? Network Application Data-link Session None of the above

All of the mentioned

Which of the following are gigabit ethernets? 1000 base-LX 1000 base-CX 1000 base-SX All of the mentioned

TCP and UDP

Which of the following are transport layer protocols used in networking? TCP and FTP UDP and HTTP TCP and UDP HTTP and FTP

All of the mentioned

Wireless transmission of signals can be done via __. Radio waves Microwaves Infrared All of the mentioned

router: -to connect various networks simultaneously -works in network layer -used by lan & man -data is sent in form of packets -less collision taking place switch: -connect various devices simultaneously -works in data link layer -used by only lan -data is sent in form of frame -no collision taking place

differentiate router and switch

Subscriber identity module (SIM)

electronic microchip for storing information

Mobile equipment

terminal used by user