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Midterms (3rd YR) > ITEC51 (Sir Anda) > Flashcards

ITEC51 (Sir Anda) Flashcards

1
Q

are networking hardware used to connect one
network device to other network devices or to connect two or more
computers to share printers, scanners etc.

A

Networking cables

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2
Q

these cables are essentially the carrier or media through which data
flows. Twisted pair cable is used in many ethernet networks.

A

Networking cables

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3
Q

the most common network cabling

A

unshielded twisted pair (UTP).

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4
Q

Types of Network Cable

A

Coaxial Cable
Fiber Optic Cable
Twisted Pair Cable

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5
Q

is another type of copper cable which has an inner conductor
surrounded by foam insulation, symmetrically wrapped by a woven braided
metal shield, then covered by in a plastic jacket.

this unique design allows coaxial cable runs to installed next to metal
objects such as gutters without the power losses that occur in other types of
transmission lines.

this kind of cable is mainly adopted in feedlines connecting radio
transmitters and receivers with their antennas, computer network
connections, and distributing cable television signals.

A

Coaxial Cable

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6
Q

cable consists of a bundle of glass threads, each of which is capable
of transmitting messages modulated onto light waves.

has a complicated design and structure. This type of cable has an
outer optical casing that surrounds the light and traps it within a
central core.

the inside of the cable (the core) must configured in two different
ways – Single-mode and multi-mode; although the difference may
seem small, it makes a tremendous difference to the performance and
the usage of fiber optic cables.

A

Fiber Optic Cable

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7
Q

cable is a type of ordinary wiring which connects home and many business
computers to the telephone company.

is made by putting two separate insulated wires together in a twisted
pattern and running them parallel to each other, which helps to reduce
crosstalk or electromagnetic induction between pairs of wires.

A

Twisted Pair Cable

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8
Q

two common types of twisted pair cables:

A

shielded twisted pair (STP) cable
unshielded twisted pair (UTP) cable.

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9
Q

is available for Token Ring networks,

A

STP shielded twisted pair

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10
Q

is more suitable for Ethernet networks.

A

UTP unshielded twisted pair

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11
Q

used to connect computing devices together directly.

used to connect to PCs directly together, also used for
connecting networking devices together like Switch to Switch
etc.

A

Cross-over (T568A )

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12
Q

refers to cables that have the pin assignments on each end of
the cable. In other words, Pin 1 connector A goes to Pin 1 on
connector B, Pin 2 to Pin 2, etc.

are most commonly used to connect a host to a client.

are primarily used for connecting unlike devices.

A

Straight Through(T568B )

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13
Q

have opposite Pin assignments on each end of the cable

sometimes referred to as Yost cables are most commonly used to
connect to a device’s console port to make programming changes
to the device. Unlike crossover and straight-wired cables, rollover
cables are not intended to carry data but instead create an interface
with the device.

A

Roll over

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14
Q

is a large network of information that is not tied to a single location

can facilitate communication, the sharing of information and much more between devices from around the world through a WAN provider

operates beyond the geographic scope of a LAN

A

Wide Area Network (WAN)

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15
Q

are telecommunications services provided by telecommunications and long-distances carriers that route packets of data between LAN in diverse geographical locations to form a WAN

A

Packet Switch Services

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16
Q

is a telecommunications service provided to businesses by telecommunications and long-distance carriers

is an umbrella term describing any service that provides switched connections between a consumer and a provider

A

Circuit Switch Services

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17
Q

is associated with Asynchronous Transmission Mode (ATM) which is considered to be a high speed switching technology that attempted to overcome the speed problems faced by the shared media like Ethernet and FDDI

uses a connection-oriented packet-switched network

A

Cell Switch Services

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18
Q

this methodology uses a fixed length of packets of 53 bytes out of which 5 bytes are reserved for header

breaks the information into smaller packets of fixed length and thereby ensuring guaranteed delays

A

Cell Switch Services

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19
Q

is done through the Public Switched Telephone Network (PTSN), which is composed of multiple telephone carriers from around the world

can be used access the Internet by connecting a computer to a computer to a modem, connecting the modem to an analog phone line, and dialing in to a service provider

A

Dial-up modems

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20
Q

is an always-on internet access method available in areas that have digital cable television

connectivity is achieved by using a device called a cable modem. it has a coaxial connection for connecting to the provider’s outlet and an unshielded twisted pair (UTP) connection for connecting directly to a system or to a hub, switch, or router

A

Cable modems

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21
Q

Other WAN services

A

Dial-up modems
Cable modems

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22
Q

guide and direct network data, using packets that contain various kinds of data such as files, communications, and simple transmission like web interactions.

are responsible for receiving, analyzing, and forwarding data packets among the connected computer networks. When a data packet arrives, the router inspects the inspects the destination address, consults its routing tables to decide the optimal route and then transfers the packet along this route

A

Routers

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23
Q

common router manufacturers:

A

cisco
D-link
HP
3Com
Juniper
Asus
TP-Link
Huawei
LinkSys
Nortel

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24
Q

Types of Routers

A

Wireless Router
Broadband Router
Core Router
Edge Router
Virtual Router

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25
Q

They provide WiFi connection WiFi devices like laptops, smartphones.

They can also provide standard Ethernet routing. For indoor connections, the range is 150 feet while its 300 feet for outdoor connections

A

Wireless Router

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26
Q

They are used to connect to the internet through telephone and to use voice over Internet Protocol (VoIP) technology for providing high-speed internet access. They are configured and provided by the Internet Service Provider (ISP)

A

Broadband Router

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27
Q

They can route data packets within a given network, but cannot route the packets between the networks. They helps to link all devices within a network thus forming the backbone of network. It is used by ISP and communication interfaces.

A

Core Router

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28
Q

are specialized routers that act as gateways at the network edge

they enable connectivity between an enterprise network and an external network

A

Edge Router

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29
Q

are pieces of software that allow some router functions to be virtualized in the cloud and delivered as a service

these routers are ideal for large businesses with complex network needs. They offer flexibility, easy scalability, and a lower entry cost.

A

Virtual Router

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30
Q

WAN Topologies

A

Point to point topology
Ring topology
Hub and Spoke topology
Mesh topology
Tiered topology
Hybrid topology

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31
Q

employs a point-to-point circuit between two endpoints

provides a Layer 2 transport service through the service provider network.

packets sent from one site are delivered to the other site and vice versa.

is transparent to the customer network, as if there was a direct physical link between two endpoints

A

Point to point topology

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32
Q

a ring-shaped WAN constructed with point-to-point transmission facilities can be used to interconnect a small number of sites and provide route redundancy at a potentially minimal incremental cost

can use dynamic routing protocols

A

Ring topology

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33
Q

if a private network connection between multiple sites is required, a point-to-point topology with multiple point-to-point circuits is one option.

This interface can be expensive. A less expensive option is a point-to-multipoint topology

spokes sites are connected to each other via Hub sites

the network communication between two spokes always travel through the hub

A

Hub and Spoke topology

34
Q

any sites can communicate directly with any other sites

is highly redundant

is the most desirable WAN topology

A

Mesh topology

35
Q

is a modified version of the basic hub and spoke topology

constructed with dedicated facilities offers improved fault tolerance over the simple star topology without comprising scalability

A

Tiered topology

36
Q

is useful in larger, more complex networks

may be developed in a multitiered WAN by using a fully meshed topology for the backbone nodes only.

A

Hybrid topology

37
Q

Router Components

A

Input ports
Routing processor

38
Q

it performs the physical layer functionality of terminating an incoming physical link to a router

it performs the data link layer functionality needed to interoperate with the data link layer functionality on the other side of the incoming link

it also performs a lookup and forwarding function so that a datagram forwarded into the the switching fabric of the router emerges at he appropriate output port

A

Input ports

39
Q

computes the forwarding table, implements routing protocols, and runs the software to configure and manage the router

it also handles any packet whose destination address cannot be found in the forwarding table in the line card

A

Routing processor

40
Q

connects the router’s input ports to its output ports

is completely contained with the router - a network inside of a network router

A

Switching Fabrics

41
Q

3 Switching Fabrics

A

Switching Via a Memory
Switching Via a Bus
Switching Via a Crossbar

42
Q

Router Modes

A

User Execution Mode
Privileged Mode
Global Configuration Mode
Interface Configuration Mode
ROMMON Mode

43
Q

is the first mode a user has access to after logging into the router.

this mode allows the user to execute only the basic commands

A

User Execution Mode

44
Q

allows users to view the system configuration, restart the system, and enter router configuration mode.

#

A

Privileged mode

45
Q

we type configure terminal to the user mode

commands enter in these modes are called global commands and they affect the running-configuration of the router

different configuration like making local database on router by providing username and password

A

Global Configuration Mode

46
Q

in this mode, only configuration of interfaces are done.

assigning an IP address to an interface, bringing up the interface are the common tasks done in this mode

A

Interface Configuration Mode

47
Q

stands for ROM monitor

we can enter in this mode when we interrupt boot process of the router. Generally, we enter in this mode while password recovery process or Backing up of IOS on device like TFTP server

it is like BIOS mode of a PC. / bootstrap

A

ROMMON Mode

48
Q

the unique number of ID assigned to one host or interface in a network

A

Address

49
Q

a portion of a network that shares a particular subnet address

A

Subnet

50
Q

a 32-bit combination used to describe which portion of an address refers to the subnet and which part refers to the host

A

Subnet Mask

51
Q

a network connection

A

Interface

52
Q

Helps you know which portion of the address identifies the network and which portion of the address identifies the host.

A

Network Mask

53
Q

was introduced in order to improve both address space utilization and routing scalability in the internet

it was needed because of the rapid growth of the internet and growth of the IP Routing tables held in the internet routers

A

CIDR (Classless Interdomain Routing)

54
Q

is an interactive CLI mode that prompts you for information needed to build an initial configuration for a cisco networking device.

provides help text at each prompt.

A

System Configuration Dialog

55
Q

this command verifies that the interfaces are operating correctly and that they and the line protocol are in the correct state: up or down

A

show interfaces

56
Q

this command displays a summary status of the interfaces configured for IP

A

show ip interface brief

57
Q

this command verifies that the correct hostname and password were configured

A

show configuration

58
Q

is a distributed database in which you can map hostnames to IP address through the DNS protocol from a DNS server

A

Domain Name System (DNS)

59
Q

to keep track of domain names

refers to the server component of the domain name system, one of the two principal namespaces of the internet

A

Name servers

60
Q

to speed the process of converting names to addresses, the name server maintain a database

stores the results from previous responses

A

Cache

61
Q

are widely used in networks in today

can be used to define an exit point from a router when no other routes are available or necessary

A

Static Routing

62
Q

can manually configure a static route to reach a specific network

A

network administrator

63
Q

can be used to define an exit point from a router when no other routes are available or necessary

A

default route

64
Q

help the network administrator manage the time consuming and exacting process of configuring and maintaining static routes

they are scalable and automatically determine better routes if there is a change in the topology

A

Dynamic Routing

65
Q

is a collection of routers under a common administration such as a company or an organization.

also known as a routing domain

A

Autonomous System (AS)

66
Q

used for routing within an AS.

companies, organization, and even service providers uses this on their internal networks

A

Interior Gateway Protocols (IGP)

67
Q

used for routing between autonomous systems

A

Exterior Gateway Protocols

68
Q

is the only currently viable EGP and is the official routing protocol used by the internet

A

Border gateway protocol

69
Q

identifies how far it is to the destination network and is based on a metric such as the hop count, cost, bandwidth, delay, and more.

A

Distance

70
Q

specifies the direction of the next-hop router or exit interface to reach the destination

A

Vector

71
Q

First generation legacy protocol

A

RIPv1

72
Q

Simple distance vector routing protocol

A

RIPv2

73
Q

First generation cisco proprietary protocol

A

IGRP

74
Q

advanced version of distance vector routing

A

EIGRP

75
Q

Is performed by every switching node in the network

a complex routing protocol that shares information with other routers in order to determine the best path

A

Link-State Routing Protocols

76
Q

Popular standards-based routing protocols

A

OSPF

77
Q

Popular in provider networks

A

IS-IS

78
Q

DO NOT send subnet mask information in their routing updates

A

Classful Routing Protocols

79
Q

DO send subnet mask information in their routing updates

A

Classless Routing Protocols

80
Q
A

Midterms (3rd YR) (6 decks)

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