DSL Dialup Satellite Leased line Cable modem Converged network Reliability Scala

Question

DSL

Dialup

Satellite

Leased line

Cable modem

Converged network

Reliability

Scalability

QoS

Console connection

telnet connection

Commands to configure an interface (including prompts)

Where are they stored?

Running-config:

Startup-config:

IOS:

Banner motd

SVI (what is it and how is it configured)

Message encoding

TCP

Benefits of a layered model

Segmentation

Encapsulation

Subnet mask

OSI layers (this is a big one) know the layers, their purpose, encapsulation, addressing

Bandwidth vs throughput

UTP cable types and their purposes

Data link sublayers and what they do

Functions of a switch

Cut-through switching

Store-and-forward switching

IP vs. MAC addressing from device to device

NVRAM

IP addressing & default gateway

ANDing

Private address ranges

A:

B:

C:

IPv6 link local address range

Ping vs. tracert

Subnetting (big one)

# of networks, # of hosts

VLSM (concept and process)

TCP vs. UDP

Windowing (also called sliding window)

Protocols (know what they are, port#, & which layer)

Peer-to-peer operation

HTTP messages

Network packet captures

Device security commands

Logical vs physical topology

Media types

Parts of routing table and how it functions

DSL

Dialup

Satellite

Leased line

Cable modem

Converged network

Reliability

Scalability

QoS

Console connection

telnet connection

Commands to configure an interface (including prompts)

Where are they stored?

Running-config:

Startup-config:

IOS:

Banner motd

SVI (what is it and how is it configured)

Message encoding

TCP

Benefits of a layered model

Segmentation

Encapsulation

Subnet mask

OSI layers (this is a big one) know the layers, their purpose, encapsulation, addressing

Bandwidth vs throughput

UTP cable types and their purposes

Data link sublayers and what they do

Functions of a switch

Cut-through switching

Store-and-forward switching

IP vs. MAC addressing from device to device

NVRAM

IP addressing & default gateway

ANDing

Private address ranges

A:

B:

C:

IPv6 link local address range

Ping vs. tracert

Subnetting (big one)

# of networks, # of hosts

VLSM (concept and process)

TCP vs. UDP

Windowing (also called sliding window)

Protocols (know what they are, port#, & which layer)

Peer-to-peer operation

HTTP messages

Network packet captures

Device security commands

Logical vs physical topology

Media types

Parts of routing table and how it functions

Explanation / Answer

Answer:

DSL:

A digital subscriber line (DSL) modem is a device used to connect a computer or router to a telephone line which provides the digital subscriber line service for connectivity to the Internet, which is often calledDSL broadband.

Dialup:

Dial-up Internet access is a form of Internet access that uses the facilities of the public switched telephone network (PSTN) to establish a connection to an Internet service provider (ISP) by dialing a telephone number on a conventional telephone line.

Satellite:

Satellite is a connection that makes high-speed internet accessible to areas where DSL and cable connections are not yet available. Data is downloaded (received) about 10 times faster than dial-up through a satellite dish attached to your home. Some satellite systems have slower uploading times (sending data) because data must travel over phone lines through a modem. Other systems use the satellite both ways for uploading and downloading.

Leased line:

An Internet leased line is a premium internet connectivity product, normally delivered over fiber, which provides uncontended, symmetrical speeds with full duplex. It is also known as an ethernet leased line, dedicated line, data circuit or private line.

cable modem:

A cable modem is a device that enables you to hook up your PC to a local cable TV line and receive data at about 1.5 Mbps. ... A cable modem can be added to or integrated with a set-top box that provides your TV set with channels for Internet access.

converged networks:

The converged networks or multiservice networks refer to the integration of voice, data and video over a single IP-based network

Scalability:

Scalability  is a characteristic of a system, model or function that describes its capability to cope and perform under an increased or expanding workload. A system that scales well will be able to maintain or even increase its level of performance or efficiency when tested by larger operational demands.

QOS:

Quality of Service (QoS) is an advanced feature that prioritizes internet traffic for applications, online gaming, Ethernet LAN ports, or specified MAC addresses to minimize the impact of busy bandwidth.

Console connection:

Console management - reverse Telnet, reverse SSH: In console management terminology, users can use reverse Telnet or SSH to connect to a serial device. They run Telnet or SSH on their client (PC) and attach to the terminal server, then connect to the serial device.

telnet connection:

Telnet is a protocol that allows you to connect to remote computers (called hosts) over a TCP/IP network (such as the Internet). Using telnet client software on your computer, you can make a connection to a telnet server (i.e., the remote host).

Banner motd:

A banner is a message presented to a user who is using the Cisco switch. ... You can configure three main types of banners on your Cisco switch, as shown here: Message of the Day (MOTD): This type of logon message has been around for a long time on Unix and mainframe systems.

->Defines a customized banner to be displayed when there is an incoming connection to a terminal line from a host on the network. banner login. Defines a customizedbanner to be displayed before the username and password login prompts. banner motd. Defines a customized message-of-the-day banner

SVI:

A Switched Virtual Interface (SVI) is a virtual LAN (VLAN) of switch ports represented by one interface to a routing or bridging system. There is no physical interface for the VLAN and the SVI provides the Layer 3 processing for packets from all switch ports associated with the VLAN.

Message encoding:

Encoding, is the process of creating a message for transmission by an addresser to an addressee. The complementary process – interpreting a message received from an addresser – is called decoding.

TCP:

he Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite. It originated in the initial network implementation in which it complemented the Internet Protocol (IP). Therefore, the entire suite is commonly referred to as TCP/IP.

Benefits of a layered model:

There are benefits to using a layered model to describe network protocols and operations. Using alayered model:

Assists in protocol design, because protocols that operate at a specific layer have definedinformation that they act upon and a defined interface to the layers above and below.

Fosters competition because products from different vendors can work together.

Prevents technology or capability changes in one layer from affecting other layers above andbelow.

Provides a common language to describe networking functions and capabilities.

Segmentation:

Network segmentation in computer networking is the act or profession of splitting a computer network into subnetworks, each being a network segment. Advantages of such splitting are primarily for boosting performance and improving security.

Encapsulation:

When referring to networking, encapsulation is the process of taking data from one protocol and translating it into another protocol, so the data can continue across a network. For example, a TCP/IP packet contained within an ATM frame is a form ofencapsulation.

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