Computer Science 108: Introduction to Networking (part 2)

What Ethernet Standard Specification is suitable for a network requiring 100 Mbps speed and 2000 max cable distance?

100 Base - FX. Explanation: 100 Base - FX Multi-mode 412 meters - 2000 meters (Half-Duplex/full-duplex) and speed 100Mbps

An office operates on 3 floors of a building. It comprises 4 different departments. Which of the following network implementation will most suit the office needs?

4 VLANs on 4 switches with trunk link connections.

Which of the following is NOT a standard Wi-Fi communications standard?

802.11x.

Which of these statements is NOT true about a NIC?

A NIC only allows for either a wired or wireless connection, not both.

Which of the following is FALSE about LAN cards?

A computer can only have one LAN card.

What is a server?

A computer equipped with software and hardware to offer services to other computers connected to it.

If you wanted to connect a WAN (Wide Area Network) with a high-level of resiliency, what technique would you use?

A full mesh design.

If you didn't have access to a highly-skilled IT network team, what would be a good option for a WAN (Wide Area Network)?

A fully carrier managed WAN.

What type of hardware device is a WiFi card?

A network interface card to establish a wireless connection.

How does the use of a router differ from a bridge in telecommunication?

A router is a communication device that is used to connect two different networks, while a bridge is networking device that divides the network into different segments to manage the amount of traffic.

What is Ethernet?

A standard for computer networking technologies.

What is WiFi?

A type of wireless network connection.

A hardware device that has a built-in network adapter, antenna and radio for Wi-Fi is a(n) _____.

Access Point.

Which of the following is a transmission mode that transmits in two directions, but only in one direction at a time?

Asynchronous.

What unit of data measurement is used with synchronous transmissions?

Block (Blocks can range in size from a few to several thousand bytes).

What category of LAN card do laptops typically support?

Both wired and wireless cards.

What type of connections does a NIC control?

Both wired and wireless connections.

In WANs, which of the following is NOT a characteristic of mesh topology?

Broadcasts are transmitted over a backbone which is accessible and seen by all connected sites.

Which of the following is an example of network topology?

Bus topology.

A data measurement unit that contains 8 bits of information is known as which of the following?

Byte.

Which of the following technologies use microwaves?

Cellular.

Which of the following wireless technologies would fit under the WAN category?

Cellular.

Individuals and social networking platforms have the ability to store Terabytes of data away from local devices by the use of the _____.

Cloud

In a cable network environment, what is the name of the cable type that connects from the wall outlet to the modem?

Coaxial.

Which of the following statements about a VLAN environment is TRUE?

Computers or nodes by default are not VLAN aware.

Which of the following is not a typical application of Bluetooth wireless communication?

Connecting several devices to the wireless Internet.

What type of bit is used with an asynchronous transmission to signal the beginning and end of a byte of data?

Control. Explanation: A control bit is placed at the beginning and end of a byte as a marker for computer systems to know when the byte starts and stops. Control bits consist of start bits and stop bits.

What is one of the major differences between a DSL network and a cable network?

DSL only worked well if the modem was close to the main service area, cable does not have such restrictions.

Ethernet usually permits each node in the network to transmit data packets at any time which can cause _____

Data collision.

In WANs, what advantage does the ring topology have over the bus topology?

Data transmission is multidirectional.

The Frame Check Sequence (FCS) within an Ethernet frame serves to _____

Detect corrupted data.

What are the benefits of a DSL network over the previous method known as dial-up?

Dial-up was the origin of the consumer home network, but DSL was the next step after that. All of the answers listed played an essential role in what made DSL unique and why it was such a significant move forward regarding technical achievements.

Select the most appropriate option: Wireless communication uses _____ to transmit a signal.

Electromagnetic waves

What is the approximate distance between devices when establishing a connection using short-range wireless communication?

From a few centimeters to several meters.

The software or hardware used to connect two different networks is known as _____

Gateway.

Which of the following devices can be used to interface computer networks that use different communication protocols?

Gateway.

A single Wi-Fi Access Point can cover a geographic area as large as a(n) _____.

House

What are two common WAN (Wide Area Network) design types?

Hub and spoke; Full mesh topology.

Which of the following wireless communication technologies does not travel through walls and needs line-of-sight to communicate?

Infrared.

A PCMCIA LAN card typically goes where?

Inside a laptop.

Which of the following best describes the connection tool for a new smartphone that can connect to Wi-Fi?

Integrated Wi-Fi.

Science and engineering orbital data are made accessible to the general public by use of the _____

Internet-to-orbit.

What makes the symmetric DSL network type so different from the asymmetric type?

It has an equal balance between download and upload speeds.

What is a single point of failure in a hybrid network topology?

It is a basic topology that has failed.

Internet of Things (IoT) differs from the Internet in that _____.

It is the ability for every electronic device to connect via the internet while the Internet is the medium by which they connect.

What is a star-wired ring hybrid topology?

It's set of star topologies are connected by a ring topology as the adjoining topology.

Ethernet is the ______

LAN technology that dictates the technical specifications of hardware for connectivity.

Relative to other technologies such as Bluetooth, WiFi and cellular, Zigbee provides wireless communication that provides _____.

Lower cost and longer battery life.

Of the options listed, which is the most used WAN (Wide Area Network) carrier?

MPLS.

In star-wired ring hybrid topology, a failure in one of the nodes of the main ring topology can lead to a breakdown of the entire hybrid network. What can be done to ensure the network does not fail in such a case?

Making the ring topology to be bidirectional.

What type of coverage does Wi-Fi provide?

Medium range wireless communication.

Four types of WAN topologies are _____

Mesh, star, ring, bus topologies.

Which network topology would be used to directly connect every computer in an office to every other computer in the office, using a one-to-one cabling method?

Mesh.

Which of the following is a feature of 5G?

Multiple device support.

Which of the following wireless communication technologies has the shortest range?

Near Field Communication.

What does NIC stand for?

Network interface card or controller.

Which of the following is true with respect to below statements? I. An Ethernet card is necessary for a wireless connectivity through a Wireless Access Point. II. The devices that are connected using a Wireless Access Point communicate using radio signals or Infrared waves.

Only II is true.

How do signals travel between a GPS satellite and an on-the-ground GPS receiver?

Only from the satellite to the receiver.

In the context of wireless computing devices, the term PDA stands for _____ _____ _____ ?

Personal Digital Assistant

_______ is NOT a type of server.

Redundant power supply server

Consider a number of computers are in a network, and one computer crashes. In which of the following network topologies will the entire network also go down?

Ring topology.

A _____ network cannot be applied at enterprise level due to its high susceptibility to faults.

Serial backbone

Four types of backbone networks are _____.

Serial, Distributed, Collapsed and Parallel networks.

A device that you can use to make and receive calls using a wireless connection and also contain some of the functionality of a computer is called a _____.

Smartphone

Which network topology uses a central hub or controller?

Star topology.

What is a unique downside that consumers face with a traditional cable network connection versus that of DSL?

Surrounding neighbors can affect the network bandwidth during peak hours.

Which of the following contains a large number of ports to connect network segments and sends the data it receives only to specific ports?

Switch.

Which type of network transmission mode transmits data in both directions simultaneously?

Synchronous.

What is network switching?

The process of channeling data messages or data packets received from any number of input ports to another designated port that will transmit the data to its desired destination.

Which network topology uses concentration routers to interconnect star network WANs?

Tiered topology.

Which of the following is NOT a major reason why we should consider implementing a hybrid network topology as opposed to a basic topology?

To conform to standard ISO requirements.

What is the primary function of a LAN card?

To create a connection to a network.

Which of the following is NOT a difference between regular mobile phones and satellite phones?

Two-way wireless communication.

What is a WAN topology?

WAN topology describes the arrangement by which components within the WAN are organized.

How are the inherent weaknesses of star, ring, and bus topologies addressed in a hybrid topology?

When a combination of two or more of the basic topologies is made into a hybrid network topology, the weaknesses of a given topology is addressed by another.

Which of the following is/are true?

Wireless Access Points connect devices that have WI-FI or Bluetooth connectivity.

What is a backbone network?

a high capacity connectivity infrastructure that forms the main link to the different sub networks connected to it.

A VLAN is defined as _____.

a logical implementation of a LAN.

What is(are) the principal difference(s) between a smartphone and a tablet? a) screen size b) ability to make and receive video calls c) use of touchscreen technology d) processing speed

a only.

In MPLS switching, the routing decision is made _____.

by the first routing device and forms the predefined path for subsequent routers.

Parallel backbone networks differ from collapsed backbone networks in that parallel backbone components are implemented with _____.

duplicate concurrent connections to the high level backbone routers.

Padding data is required within an Ethernet frame to _____

fulfill minimum field length requirement.

The label in multi-protocol label switching contains _____.

information on the predefined path for the packets to reach their destination.

A specially built server:

is built with redundant power supplies to maintain constant availability.

The _____ of a network describes how the connections appear to the end user or how signals are passed across the network.

logical topology

VLAN identifiers are _______.

managed by switch ports and used to identify each VLAN.

A wireless network for Internet access in a large building is typically connected in a _____ topology.

mesh

The term modem is short for _____.

modulator-demodulator.

An advantage of VLAN over LAN is _____.

nodes within the same VLAN need not be in the same physical location.

A specially designed server operating system can serve

numerous concurrent clients connections.

The _____ topology of a network describes how devices are connected via actual cabling, wireless connectivity, etc.

physical

One characteristic of MPLS switching is that it _____.

prevents network congestion.

A computer can be a web server if it:

services web page requests by clients connecting to it.

Ethernet is an example of which kind of signal topology?

shared media access.

In a _____ topology network, all the devices are connected back to a central hub or switch.

star

The tree network topology is a special type of _____ topology.

star bus hybrid

One of the main disadvantages of the collapsed backbone is the _____.

susceptibility to complete system failure if the backbone router fails.

The wireless access points have a _____ that help share connections

switch

The internet is defined as ______.

the network of networks consisting of millions of devices communicating globally

The difference between circuit switching and packet switching is _____.

with circuit switching the whole message is transmitted as one using a dedicated path, while with packet switching the message is broken down into small components called packets.