ISDS 4120 Quiz 2

Which of the following can increase latency on a network?

Adding 50 meters to the length of the network

The goal of ____ is to establish international technological standards to facilitate the global exchange of information and barrier free trade.

ISO

Which standards organization developed the OSI model?

ISO

. ____ oversees the IAB (Internet Architecture Board).

ISOC

____ oversees the IAB (Internet Architecture Board).

ISOC

Which statement accurately describes the OSI model?

It describes a theoretical representation of what happens between two nodes communicating on a network

What is the purpose of cladding in a fiber-optic cable?

It reflects the signal back to the core.

Which Data Link sublayer manages flow control?

LLC

What are the sublayers of the Data Link layer as defined in the IEEE 802 standards?

Logical Link Control sublayer and Media Access Control sublayer

You have just installed a new NIC in your computer and see the following stamped on it: 000A5E1A8DA2. This unique identifier is an example of what kind of address?

MAC address

In which OSI model layer does IP operate?

Network

An IP address is an example of what type of address?

Network layer

At what OSI model layer do protocols manage data delivery priorities?

Network layer

Suppose your network is connected to another network via a router. Which OSI model layer provides the information necessary to direct data between the two networks?

Network layer

In which OSI model layer do hubs operate?

Physical

In which OSI model layer(s) do NICs operate?

Physical and Data Link

In which two layers of the OSI model do NICs belong?

Physical and Data Link layers

Which OSI model layer generates and detects voltage so as to transmit and receive signals carrying data?

Physical layer

Under what circumstances would the Transport layer use segmentation?

When the destination node cannot accept the size of the data blocks transmitted by the source code

In which of the following situations would it be most desirable to use a connectionless Transport layer protocol?

When viewing a movie on the Web

Which technology does the IEEE 802.11 specification describe?

Wireless networks

Standards define the ____ performance of a product or service.

minimum acceptable

One of the most common transmission flaws affecting data signals is ____.

noise

The ____ is a fixed number associated with a device's NIC

physical address

The ____ is a fixed number associated with a device's NIC.

physical address

You have just installed a new NIC in your computer and see the following stamped on it: 000A5E1A8DA2. This unique identifier is an example of what kind of address?

. MAC address

What is the purpose of the trailer field added to a frame in the Data Link layer?

. To mark the end of a frame

A wave with which of the following frequencies would have the longest wavelength?

100GHz

Which IEEE standard describes specifications for wireless transmissions?

802.11

Which IEEE standard describes Ethernet?

802.3

You are configuring clients to communicate over an Ethernet LAN. Which of the following IEEE specifications will identify which frame type your client should use?

802.3

In which of the following network links might you use SC connectors?

A fiber-optic connection between a server and router.

Which OSI model layer initiates the flow of information?

Application

The serial interface on the back of the connectivity device is often labeled "____."

Console

Which layer of the OSI model encapsulates Network layer packets?

Data Link layer

Which technology does the IEEE 802.3 specification describe?

Ethernet LANs

You are helping to install a cable broadband system in your friend's home. She wants to bring the signal from where the service provider's cable enters the house to a room on another floor, which means you have to attach a new cable to the existing one. What type of cable should this be?

RG-6

____ is the process of reconstructing segmented data.

Reassembly

Which of the following network transmission media offers the highest potential throughput over the longest distances?

SMF

_____ is a unit of data that results from subdividing a larger protocol data unit.

Segment

Transport layer protocols break large data units into ____.

Segments

Which OSI model layer is responsible for keeping open a communications path between your computer and the server when you dial in to a remote access server?

Session layer

What part of a cable protects it against environmental damage?

Sheath

Which of the following standards organizations has established guidelines for installing network cables in commercial buildings?

TIA/EIA

Which part of a MAC address is unique to each manufacturer?

The block ID or OUI Correct

Which of the following would be found in a Data Link layer header?

The source's physical address

In which OSI model layer does TCP operate?

Transport

Which layer of the OSI model is responsible for issuing acknowledgements (ACKs)?

Transport layer

Which term describes the hardware that makes up the enterprise-wide cabling system?

cable plant

Which type of protocol is useful when data must be transferred quickly?

connectionless

The points where circuits interconnect with other circuits is known as ____.

cross-connect facilities

Ethernet relies on which of the following transmission types?

full-duplex

Many network problems can be traced to poor cable ____ techniques.

installation

The process of determining the best path from Point A on one network to Point B on another is known as ____.

routing

. Transport layer protocols break large data units into ____.

segments

Which term identifies a room containing connectivity for groups of workstations in its area?

telecommunications closet

Each network node has ____ types of addresses

two