Comptia Network + (157)

Imported without edits

Used to prevent Data loops between switches operating at layer 2 of the OSI

Also prevents Bridge loops

STP (Spanning Tree Protocol)

Wide Area Network (WAN) technology that supports 1.544 Mbps

T1 line

DNS Record type used for IPv6 address resolution

AAAA

LC Connector

Small Form Factor of SC connector

Used to locate a break in coaxial cable as quickly as possible

Time Domain Reflectometer (TDR)

OSI layer that VLANs operate

OSI Layer 2

How to mitigate a Smurf Attack

Block ICMP requests

Performance Statistics captured to be compared to future statistics. Used for tuning, optimizations and troubleshooting

Baseline Analysis

Record organizational assets including personnel and other non-computer resources.

Asset Management

Topology where every host device is directly connected to every other through a common cable.

BUS

Layer 3 device that connects different subnets

Router

Diagram detailing

-IP Addresses

-Static vs. Dynamic

-Physical Locations,

-Cabling type,

-protocol,

and -speed

of connections

Physical Network Diagram

Exchange routing information with autonomous networks

Interior Gateway Protocol (IGP)

Packet Switching Technology

-Breaks data into packets for transmission

-Assign label for routing

-Packets routed individually

Internet and Ethernet networks use Packet Switching

MPLS

Multiplexing protocol use to transmit data of optical cabling

SDH

wireless broadband standard that uses

multiple antennas

to provide faster data rates

HSPA+ (Evolved High Speed Packet Access)

Different wavelengths carry different signals over optical cabling.

DWDM (Dense Wave Division Multiplexing )

Used to centrally Store Data and is

accessed using Remote Desktop

Virtual Desktop

DHCP Option 6

IP Addresses of DNS Servers that DHCP clients can use

DHCP Option 1

Subnet Mask

DHCP Option 3

IP addresses of Routers

DHCP Option 15

DNS Domain Name used in names resolution

Translates private and public IP addresses

NAT Server

Wide Area Network (WAN) that offers 78Mbps wireless transmission

WIMAX

Attacker Intercepts packets on route and replaces them

Can be mitigated using encryption such as TLS (Transport Layer Security) protocol or IPSec

Man in the Middle attack

All routers contain correct routing information

along Optimal Path

The network is in a steady state

Convergence of Network Routers

802.11g

802.11n

Supports ---- ----

Channel Bonding

Network Interface layer TCP/IP (Link Layer)

OSI layers

1 Physical

and

2 Data Link, lowest level of the TCP/IP suite.

This layer is responsible for placing and removing packets on the physical network through communication with the network adapters in the host

Internet Layer of the TCP/IP refers to what OSI layer

OSI layer

3. Network

Transport Layer TCP/IP

OSI layer

4. Transport,

layer is responsible for the mechanisms focused on reliability of the data.

Application Layer TCP/IP

OSI Layers

5. Session

6. Presentation

7. Application

In the TCP/IP model, the application layer contains the logic needed to support the various user applications.

SNMP (Simple Network Management Protocol) monitors port ---for requests

UDP port 161

Provides

-NAT (network address translation)

-Web page caching

-Security

Reduces traffic because pages are delivered from the cache.

Proxy Server

Prioritizes Traffic

and

controls transmission rates by port usage, or protocol

and

Can delay packets to control bandwidth (Throttling)

Bandwidth Shaper

A network device that helps evenly distribute the flow of network traffic to other hosts.

Load Balancer

A Layer 3 switch that provides routing.

In Local Area Network(LAN), not on perimeter.

Multi Layer Switch

Tool used to connect twisted pair cable to a 110 block

Punch Down Tool

Distance vector routing protocol

supported by the widest variety of routers

between networks

using a variable length subnet

Supports CIDR

Uses fewest hops (15 max)

RIPv2

===used to find the MAC (Media Access Control) address

when IP address is known.

ARP (Address Resolution Protocol)

Host Name to IP address resolution.

Port 53

DNS (Domain Name System)

Allows DNS clients to dynamically update their resource records with the DNS server

automatically when their IP address changes

DDNS (Dynamic DNS)

Facilitates redundant Links between segments connected with a layer 2 switch.

STP (Spanning Tree Protocol)

Documentation showing

Bandwidth necessary for

minimum performance targets

Basic design specifications

Policy documentation

Baseline

Documentation showing

logical network design

Domain Specifications

Relationships

Server Roles

Logical Network Diagram

Documentation showing

Physical locations of equipment

Infrastructure

Cable Types and lengths

Physical Network Diagram

Documentation showing how devices and software are configured

Configuration Documentation

TCP/IP protocol that allows you to securely monitor network attached devices. (Authentication, Encryption and message integrity)

Network management console that:

-Provides Information about network devices

-Controls Network Devices

Port 161

SNMPv3

Email Protocol used to communicate with email server by

port 143

IMAP (Internet Message Access Protocol)

Protocol used for sending Error and Control messages (i.e. Ping messages)

ICMP (Internet Control Message Protocol)

Traffic gets routed between switches or bridges and without reaching destination

Switch or Bridge loops

Link-State Routing protocol

Uses route with lowest cost.

Considers Bandwidth and distance

OSPF (Open Shortest Path First)

Term for:

Network is in a steady state and

All routers contain correct route information

Convergence

Port for

-SSH (Secure Shell) to Run commands for remote computers in a secure environment

-SFTP (Secure File Transfer Protocol)

-SCP (Secure Copy)

Port 22

HTTPS port

Secure communications between browser and web servers

Port 443

Port used for

Telnet Secured by TLS or SSL

Pot 992

Unsecure Telnet Port

allows connections and command line access to remote computers in clear text.

Port 23

Port for listening for SNMP requests. (Simple Network Management Protocol)

UDP port 161

Port for SNMP notifications (TRAPS)

UDP port 162

Process of using 2 channels used instead of 1 to increase bandwidth and double data rate.

Channel bonding

Port used by Remote Desktop to remotely control a computer using encryption

Port 3389

Port used by POP3 email protocol

Port 110

Primary benefit for using STP (Shielded Twisted Pair) over UDP (Unshielded TP)

Immunity to EMI

Fastest Ethernet that can run on CAT3 cable

10BASE-T

Ethernet that requires CAT6 cable

10Gbps

10GBASE-T

Port for HTTPS

Secure communications between client and server

Port 443

port for HTTP unsecured traffic between client and server

Port 80

VLANs operate at what OSI layer?

Layer 2

Device that can prioritize traffic based on QoS

Multilayered Switch

Wide Area Network (WAN) technology that

supports 44.736 Mbps

672 channels

T3 line

Fiber optic line that uses SONET

51.84 Mbps

OC-1 (Optical Carrier)

Wide Area Network (WAN) technology that

supports 1.544 Mbps

23 Channels (No control channel)

64 Kbps per channel

ISDN-PRI

Wide Area Network (WAN) technology that

supports 128 Kbps

2 Channels (No control channel)

64 Kbps per channel

ISDN-BRI

Port for DNS Server

Resolve Host to IP addresses

Port 53

Port used for

DHCP to assign IP addresses

and

BOOTP to support diskless workstations

UDP port 67

Port used for NetBIOS name resolution

TCP port 137

What is the main function of a proxy server

Protect Clients

One limitation of the original server virtualization platform is---

All instances had to be on the same subnet.

What network device allows a server to be brought down without adversely affecting the service quality?

Content Switch (aka Load Balancer)

DNS Record type used for email server.

MX (Mail Exchange)

Points to a Canonical Name (CNAME) record and is used for reverse DNS lookup

PTR (pointer)

Reverse DNS lookup

Determine domain name associated with an IP address

Alias of an existing record, allowing multiple DNS records to match to the same IP address.

CNAME (Canonical Name)

Used to map a host name to an IPv4 address

A Record (Address Record)

Block used to terminate high speed networks

110 block

Block used to terminate telephone connections and networks up to 10 Mbps using CAT3 cabling

66 block

What is needed on a router for a DHCP client to send a DHCP-DISCOVER message to the DHCP server?

DHCP Relay agent

Technology that allows a network provider to offer networking services to customers

NaaS (Network as a Service)

Type of cable to connect one computer directly to another

Crossover Cable

Copper connecter used for cable TV connections

F-connector

Network Appliance that receives content coming over the WAN and stores the content locally, allowing a branch to get the content directly without having to access the WAN. Also known as a caching engine.

Content Engine

Provides application software access to subscribers

ASP (Application Service Provider)

Service where a company leases hardware components which get upgraded over time.

HaaS (Hardware as a Service)

Service that allows a company to use computing platforms owned and maintained by the service provider.

PaaS (Platform as a Service)

9 pin serial connector

DB-9

Eight pin connector found on most Ethernet networks

RJ-45

Six pin connector found on most telephone networks

RJ-11

Acts as a surrogate for internal client requests destined for outside the network.

Proxy Server

Common locations where cables from nearby offices terminate. Usually 110 or 66 blocks.

Intermediate Distribution Frames (IDFs)

Due to the long tip extending from the connector, a straight tip (ST) connector is also known as a...

Commonly used with MMF

Bayonet connector

Fiber connection used to connect 2 fiber strands (one transmit, one receive) in a single connector.

MTRJ