Intro to Network: Home and Peer to Peer (NCTI)

Which of the following is the portion of a network that connects other segments or networks to one another?

Backbone

The overall data-carrying capacity of a bus is represented by the unit's

Bandwidth.

The lowest layer of a protocol stack communicates with which one of the following?

Binary bits.

Which network topology requires a terminator at its end cable to prevent reflections of transmitted signals?

Bus topology

What media access control (MAC) method do wireless local area networks (WLAN) use?

Carrier sense multiple access with collision avoidance (CSMA/CA).

What media access control (MAC) method does Ethernet use?

Carrier sense multiple access with collision detection (CSMA/CD).

The unit of information used by an asynchronous transfer mode (ATM) network is the:

Cell.

The section of a computer that executes the instructions in a program and directs the flow of information within the computer is which of the following?

Central processing unit (CPU).

A significant difference between T1 line and a fractional T1 (FT1) line is

Control over the physical endpoints

The original Ethernet operated at which of the following speeds?

10 Mbps.

The fiber-optic links that usually connect asynchronous transfer mode (ATM) switches operate at which of the following speeds?

155 Mbps.

Most wireless office local area networks (LAN) currently operate in what frequency band?

2.4 GHz.

Ethernet's carrier sense multiple access with collision detection (CSMA/CD) method is defined by what Institute of Electronics Engineers (IEEE) standard?

802.2.

The central point of a star topology is usually

A Hub

Which of the following acts as a receptionist or security guard for a network and allows access based on permissions?

A Remote Access Server.

Which of the following is a characteristic of an asynchronous transfer mode (ATM) cell?

A cell is always the same size.

When the internal workings of a network are unknown to the user, it is commonly called:

A cloud.

Which one of the following statements describes encapsulation?

A computer adding headers to outbound data.

A frame relay service is?

A connection-oriented packet-switched network service.

In a building entrance, incoming telephone company cables are generally terminated in which of the following?

A cross-connect device.

In a strictly peer-to-peer network,

A dedicated server is not used.

Workstations can request to download application software and data files from which of the following?

A file server.

When a process in one computer operates at the same layer as a process in another computer, it is considered

A peer

Dedicated servers and a full client/server network operation system (NOS) are often required when

A peer-to-peer network grows.

A steady increase in user traffic will eventually degrade network performance when

A peer-to-peer network outgrows its architecture.

Bottom-layer protocols can only support communications between devices that are somehow physically connected. This connection can be described as:

A point-to-point connection.

Data added to a message, that provides information about the message, is called which of the following?

A protocol header.

The Client for Microsoft Networks is an application that

Allows computers to communicate with their peers over a network.

Computer busses have two parts:

An address bus and a data bus.

In what two ways is the gateway used?

As a router and a protocol converter.

Asynchronous transfer mode (ATM) operates at which layers of the Open Systems Interconnection (OSI) Model?

Data Link and Physical Layers.

A network interface card (NIC), aka media access control (MAC) address, resides at the _________ Layer and a logical address resides at the ___________ Layer.

Data Link/Network.

If a network administrator connects two hubs together with a switch they are most likely

Dividing the network into two logical collision domains.

To make it easier for people to read and understand IP addresses, the addresses are often written as four decimal numbers, each separated by a dot. Which of the following formats does this describe?

Dotted decimal notation.

Which is often the most convenient place to run vertical cabling in a multistory building?

Elevator shafts.

The Typical user of Network management and utility software are

Information Systems Personal and network administrators

The IP address 192.168.1.xxx:

Is reserved for local networks not connected to the Internet, and "xxx" identifies the host portion of this address

The Physical Layer is responsible for transmitting and receiving

Signals that represent data bits.

Which statement describes a bottom layer protocol?

It communicates over direct physical links.

Why is the public switched telephone network (PSTN) typically used to connect local area networks (LAN) with a wide area network (WAN)?.

It is prohibitively expensive to install the physical link between LANs and the PSTN is already installed.

Random access memory (RAM) is volatile, which means that

It loses stored data when power is lost.

T3 and synchronous optical networks (SONET) are considered

Leased wide area technologies.

Built-in support for peer-to-peer networking can be found in

Most desktop operating systems (OS).

Which of the layers below is most concerned with getting a packet through a network from a source, through intermediate nodes, to the final destination?

Network.

What is formed at the Network Layer after header data is added to the data passed down from the layer above (Transport Layer)?

Packets.

A server is a computer that

Provides resources to other computers.

Besides data rates, what is the difference between the Institute of Electrical and Electronics Engineers (IEEE) 802.11a and 802.11b wireless standards?

The 802.11a uses the 5.8 GHz range, and the 802.11b uses the 2.4 GHz range.

A bridge normally operates at which of the following layers of the Open Systems Interconnection (OSI) Model?

The Data Link Layer.

A switch normally operates at which of the following layers of the Open Systems Interconnection (OSI) Model?

The Data Link Layer.

What happens if a sending node wants to transmit data that is longer than the maximum packet size?

The Network Layer splits the data into more than one packet.

A router normally operates at which layer of the Open Systems Interconnection (OSI) Model?

The Network Layer.

Which of the following represents the basic definition of a collision domain?

The area of a network where all nodes receive all frames transmitted.

In a client computer, what program is responsible for determining whether a requested resource is local or located across the network?

The client redirection software.

When several nodes share the same transmission medium (hub, switch, or radio channel), each node will receive the frame transmitted between client and server, and vice versa. Which node will process the information inside the frame?

The node with a network interface card (NIC) address that matches the destination address in the Ethernet frame header.

Basic computer functions such as reading and writing files, and managing input/output (I/O) requests are performed by which one of the following?

The operating system.

Which of the following describes how protocol layers work together?

The receiving protocol layer uses the services of the layer below it and provides services to the layer above it.

What does the term "binary" indicate about a signal?

The signal only has two values representing the digital bits one and zero.

What purpose do protocols serve in computer networking?

They provide rules for communications.

Which of the following is a function of the Session Layer?

To facilitate a step-by-step interaction between two entities.

The primary purpose of a Network Layer protocol is to

Transmit packets between source and destination nodes that may not be connected by the same physical link.

Which of the following describes the generally accepted function of a broadband network?

Transports multiple concurrent signals on the same physical medium.

Which of the following operating systems (OS) has reliability, functionality, and stability beyond question?

UNIX

The Open Systems Interconnection (OSI) Model was developed so that

Users could connect to the Internet using hardware manufactured by any company.

Which of the following is an advantage of a switched service over a point-to-point service?

Variable capacity is available with switched services.

Which of the following describes the process of frequency modulation (FM)?

Vary the signal frequency and hold the signal amplitude constant

A frame relay network uses a process known as bandwidth-on-demand. Which of the following describes this concept?

When there is data to be sent, the bandwidth is used.

How is a collision detected in carrier sense multiple access with collision detection (CSMA/CD)?

While transmitting, the node listens to the bus, comparing the received frame to what was transmitted. If the received frame is different than what was transmitted, a collision is assumed.

Which operating system (OS) was the first to support the Plug-and-Play standard?

Windows 95.

The layer of the OSI Model that controls the way information flows between processes is which of the following?

Session.

Which of the following is used by bridges to make bridging decisions?

Frame addresses.

A Layer 2 switch is used to switch:

Frames.

The Data Link Layer perceives bits as logical groupings called

Frames.

The most complex internet working device is the:

Gateway.

Compared to logical topologies, physical topologies

Give more details about a network's connectors, cabling, and wide area links.

The classification of software used for telecommuters is referred to as:

Remote access.

Decapsulation means that each layer in the protocol stack does which of the following?

Removes its protocol header and passes the whole message up the protocol stack.

Because the primary job of the OSI Presentation Layer is to deal with the format of computing information, the Presentation Layer would be better named the:

Representation layer.

What distinguishes routers from switches and bridges?

Routers operate on packets; switches and bridges operate on frames.

What unit of information does a bridge operate on?

Segment.

What Application/Presentation Layer protocol is used by a Windows client retrieving files from a file server?

Server Message Block (SMB).