Networking FBLA SLC

Router

-This device sends and receives information about the Network layer

-This device can measure the distance to a remote network

-a networking device that forwards data packets between computer networks

-perform the traffic directing functions on the Internet (breaks up collision domains and broadcast domains)

Transport

-The layer that creates a virtual circuit before transmitting between two end stations

-This layer supports flow control and sequencing

Bridge or Switch

-This device uses hardware addresses to filter a network

-This device creates many smaller collision domains, but the network is still one large broadcast domain

Network

Logical addressing is used at this layer

Data Link (Mac Sublayer)

Hardware addresses are defined at this layer

Hub

-This device creates one big collision domain and one large broadcast domain

-a common connection point for devices in a network

-devices commonly used to connect segments of a LAN

-A network device used to connect several computers to a network. Commonly used in a twisted-pair LAN. A cable runs from each computer's NIC to the hub. The hub is often connected to a router.

What advantage does a switch have over a hub?

A switch recognizes frame boundaries and pays attention to the destination MAC address of the incoming frame as well as the port on which it was received.

Which device is used to segment a network?

A switch.
Hubs don't segment a network; they just connect network segments together. Repeaters don't segment the network; they repeat a signal and allow the distance covered to be increased.

Which of the following devices can work at both Layers 2 and 3 of the OSI model?

A switch is typically just a Layer 2 device segmenting the network by using MAC addresses. However, some higher‐end switches can provide Layer 3 services

What is an advantage of using DHCP in a network environment?

Remember that DHCP servers assign IP addresses to hosts. Thus DHCP allows easier administration than providing IP information to each host by hand (called static IP addressing)

Which device should be used if you need to send incoming packets to one or more machines that are hidden behind a single IP address?

A load balancer uses a little trickery and sends incoming packets to one or more machines that are hidden behind a single IP address. Modern load-balancing routers can use different rules to make decisions about where to route traffic, which can be based on least load, fastest response times, or simply balancing request

What role does the "A" record in a Domain Name Service (DNS) server have in your network?

DNS translates human names to IP addresses for routing your packet through the Internet.

What is the most common use for a web proxy?

Web cache, of course! Most proxy programs provide a means to deny access to certain URLs in a blacklist, thus providing content filtering, usually in corporate environments.

Which is not an advantage of network segmentation?

The first 3 options all aid in boosting network performance, so the only option left is broadcast storms. Increased traffic will increase LAN congestion

Which device creates separate collision domains and a single broadcast domain?

Switches create separate collision domains, but a single broadcast domain. Remember that routers provide a separate broadcast domain for each interface.

Which device by default does not forward any broadcast or multicast packets?

Routers don't forward any broadcast or multicast packets by default, but they do have plenty of other functions like using the logical address, using access lists, and providing Layer 2 bridging functions.

Which type of server in your network uses pointer and A records?

A DNS server uses many types of records. An "A" record is a hostname to IP address record and a pointer record is an IP address to hostname record.

Users on your network are saturating your bandwidth because they are using too many nonwork related sites. What device would limit the availability of the types of sites that users on a LAN have access to while providing granular control over the traffic between the local LAN and the Internet?

A proxy server can provide many functions. A proxy server can use a caching engine so repeated access request for web information would accelerate repeated access for users, and they can also limit the availability of web sites

Windows NT

Which network operating system was developed from the VMS platform?

UNIX

Operating system was originally developed by Bell Labs and has multitasking, multiuser, and built in networking capabilities?

Novell NetWare

Which of the following are network operating systems and not simply operating systems that will communicate on a network?

Protocol

What do networks use to communicate with each other that is sometimes known as a language that networked computers use?

IPX

-Which network protocol was developed by Novell for use in its network operating system?

-Which network layer protocols can Serial Line Internet Protocol use during a dial-up session?

Disk Duplexing

When multiple disk controllers are used in a drive mirroring scenario, it is known as which of the following?

Data Transmission

Which of the following is NOT a layer in the OSI model?

RJ-45

Which of the following is NOT a common type of medium used in networking?

Full Duplex

When data is able to travel in both directions on a cable, it is known as which of the following?

Peer-to-Peer

In what type of network is there no dedicated server and each mode on the network is an equal resource for sharing and receiving information?

Gateway

-In order for differing networks to communicate with each other, we need to use which of the following to translate between the networks?

-Software/hardware that allows connection to other networks

Which of the following types of hubs does NOT regenerate the signal when transmitting over the normal specified distance?

Passive

Repeater

What network component is used to extend the distance of the signal when transmitting over the normal specified distance?

DMA

Which of the following must be set to enable a device to directly access memory on the system, without the CPU's intervention.

Erasable Programmable Read Only Memory

What does EPROM stand for?

Switching Hub

What type of network component enables each device to have the full bandwidth of the medium when transmitting?

Hybrid

What type of hub enables more than one type of cable or media to connect to it?

The route with the fewest number of hops will be used

What will happen if we have a routing table with the same route to the same destination network?

They cannot be configured with static routes

Which of the following is NOT true regarding dynamic routers?

The packet will not be sent

What will happen if the default gateway is not specified on your computer and you try to reach another network?

A bulletin board and an answering machine

Which of the following are the best examples of a mailslot?

NetBIOS

The LMHOSTS file is a static file to resolve what types of names?

ARP

Address Resolution Protocol; a TCP/IP function for translating an IP address to an Ethernet (link-level MAC address).

Broadcast and WINS server

In what ways can a computer with a NetBIOS name register its services on the network?

Netstat

Which utility is used to display TCP/IP specific protocol and interface statistics?

FTP

-Which utility is used to facilitate file transfers between two remote hosts?

-File Transfer Protocol. FTP, which is based on TCP/IP, enables the fetching and storing of files between hosts on the Internet. See also TCP/IP.

Ping

Which utility is used to verify network connectivity of a remote host?

NSLOOKUP

Which utility is used to verify the DNA database on a DNS server?

network control protocol and link control protocol

Which components are part of Point-to-Point Protocol?

Firewall

-What technology provides a secure communications channel between an internal network and a public network such as the Internet?

-the first line of defense for an Internet-connected network

-if a network was directly connected to the Internet without a firewall, an attacker could theoretically gain direct access to the computers and servers on that network with little effort

Software Firewall

protect a single computer

-less expensive

EINS

Which type of NetBIOS name resolution is used to resolve Windows computer names to TCP/IP addresses on a local area network?

The replication service

What does Windows NT use to distribute logon scripts to multiple servers?

Service Packs

Network operating systems, such as NetWare and Windows NO/2000/XP, use which of the following to update the operating system itself?

Local Scanner

If you want to scan local or mapped network drives with InoculateT, which of the following options should you choose?

The Knowledge Base contains fixes to known problems and the Resource Kit contains self education material

What is the difference between a Resource Kit and a Knowledge Base?

A time domain reflectometer

What is the best tool to determine where abreak has occurred in a cable?

MSBACKU.EXE

What is the name of the executable for Microsoft Backup for DOS?

CSMA/CD LAN

another name for IEEE 802.3

PGP

What is the public key encryption system that can verify the authenticity of an e-mail sender and encrypt e-mail data in transmission?

Proxy Serve

What device on a network acts as an intermediary between a client and server and evaluates the requests according to rules

What is the net bit rate (maximum) as specified by 802.11n?

6000 Mbit/s

ipconfig /registerdns

At AAA Tool and Die, Larry supports a Windows 2000 Professional client using dynamic update
for name resolution. He can't ping the client using its hostname and would like to force DNS
registration from a command prompt. What is the command for this?

OS/2

What operating system was a joint venture between IBM and Microsoft and was eventually
released as an IBM operating system?

Appletalk

What protocol suite has Macintosh primarily used historically?

Terminal Adapter

Which is a specialized gateway for ISDN?

WINS

Windows Internet Name Service

-Microsoft's implementation for NetBIOS Name Service (NBNS), a name server and service for NetBIOS computer names

-a central mapping of host names to network addresses to NetBIOS

Host Files

-used to map host names to IP addresses (Windows 10/8/7)

Internet Services

-organization that provides services accessing and using the Internet

AppleTalk

-proprietary suite of networking protocols developed by Apple Inc. for their Mac computers

-allows local area networks to be connected with no prior setup or the need for a centralized router or serve of any sort

TCP/IP

Transmission Control Protocol/Internet Protocol

-a protocol for communication between computers

-used as a standard for transmitting data over networks ad as the basis for standard Internet protocols

-protocol used on the Internet to give each computer a unique address

IPX/SPX

Internetwork Packet Exchange/Sequence Packet Exchange

-networking protocols used primarily on networks using the Novell NetWare operating systems

NETBEUI

NetBIOS Extended User Interface

-program that lets computers communicate within a local area network

-arranges info in a data transmission

IEEE

Institute of Electrical & Electronic Engineers (IEEE)

-global association & organization of professionals working toward the development, implementation and maintenance of technology-centered products & services

ISO

International Organization for Standardization

-international standard-setting body composed of representatives from various national standards organizations

NIC

Network Interface Card

-contains electronic circuitry required to communicate using a wired connection or a wireless connection

MAC

Media Access Control

-responsible for the transmission of data packets to and from the network-interface card, and to and from another remotely shared channel

Shielding

-help reduce interference to network signals

Crosstalk

-occur in microcircuits within computers & audio equipment as well as within network circuits

Attenuation

-refers to any reduction in the strength of a signal

-occurs with any type of signal, whether digital or analog

-a natural consequence of signal transmission over long distances

Broadband

-high-speed Internet access that is always on and faster than the traditional dial-up access

-a method of transmitting data in the form of several analog signals at the same time

ISDN

Integrated Services Digital Network

-a set of communication standards for simultaneous digital transmission of voice, video, data, & other network services over the traditional circuits of the public switched telephone network

SMDS

Switched Multimegabit Data Service

-public, packet-switched service aimed at enterprises that need to exchange large amounts of data with other enterprises over the wide-area network on a nonconstant basis

ATM

Asynchronous Transfer Mode

-a switching technique used by telecommunication networks that uses asynchronous time-division multiplexing to encode data into small, fixed-sized cells

-A high-speed, packet-switching technique that uses short fixed-length packets called cells, and can transmit voice, video, and data over a variable-speed LAN and WAN connections, is best described by which one of the following?

RJ45 & RJ11

-RJ11 is wired for two lines

-RJ45 jack is rarely used but commonly refers to any 8P8C modular connector for application in computer networking (ethernet

ST

Straight Tip Connector

-a fiber-optic cable connector that uses a bayonet (spear like) plug and socket

SC

Standard Connector

-a fiber-optic cable connector that uses a push-pull latching mechanism similar to common audio and video cables

LC

Lucent Connector

-a miniaturized version of the fiber-optic SC connector

MT-RJ

-a fiber-optic cable connector that is very popular for small form factor devices due to its small size

USB

Universal Serial Bus

-common interface that enables communication between devices and a host controller such as a personal computer (PC)

-it connects peripheral devices such as digital cameras, mice, keyboards, printers, scanners, media devices, external hard drives and flash drives

Modems

-a device or program that enables a computer to transmit data over

-Ex: telephone or cable lines

DSL/CSU

Channel Service Unit/Data Service Unit

-a digital-interface device used to connect data terminal equipment (DTE), such as a router, to a digital circuit, such as a Digital Signal 1 (DS1)

Bridge

-a type of computer network device that provides interconnection with other bridge networks that use the same protocol

-In telecommunication networks, a ______ is a product that connects a local area network (LAN) to another local area network that uses the same protocol.

-The primary function of a bridge is to keep traffic separated on both sides of the bridge, breaking up collision domains

switch

-a computer networking device that connects devices together on a computer network by using packet switching to receive, process, & forward data to the destination device

RAID

Redundant Array of Inexpensive Disks

-storage that uses multiple disks in order to provide fault tolerance, to improve overall performance, and to increase storage capacity in a system

Blades

a blade server needs a blade enclosure, which can hold multiple blade servers, providing services such as power, cooling, networking, various interconnects and management

SMP

Symmetric Multiprocessing

-involves a multiprocessor computer hardware and software architecture where two or more identical processors are connected to a single, shared main memory, have full access to all input and output devices

-are controlled by a single operating system

SCSI

-a set of parallel interface standards developed by the American National Standards Institute (ANSI) for attaching printers, disk drives, scanners and other peripherals to computers

Wi-Fi

-a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections

WiMax

Worldwide Interoperability for Microwave Access

-a wireless industry coalition dedicated to the advancement of IEEE 802.16 standards for broadband wireless access (BWA) networks

GSM

Global System for Mobile Communications

-a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks

Analog

signal that is one in which a base carrier's alternating current frequency is modified in some way

(such as by amplifying the strength of the signal or varying the frequency, in order to add information to the signal)