Notes, abstracts, papers, exams and problems of Technology

1. Refer to the exhibit. The network administrator needs to setup Switch1 for remote access from HostA. Theshow ip interface brief is issued on Router1 and the show interfaces trunk command is issued on theSwitch1 to verify the current status. The administrator applies the additional configuration shown in theexhibit to Switch1. However, the telnet from HostA fails. What additional commands need to be appliedto the switch?
Switch(config)# interface vlan 10
Switch(config-if)# ip address 10.1.1.250 255.255.255.0
Switch(config-if)# no shutdown
Switch(config-if)# ip default-gateway 10.1.10.254

2. Refer to the exhibit. On the basis of the configuration shown, how will an Ethernet frame on port GigabitEthernet0/1 be modified?
802.1Q encapsulation inserts

... Continue reading "Ccna3" »

Hydro-Electric Power Plant

Classification of Hydro-Electric Power Plants

According to the Availability of Head:

1. Low head plants - head below 30 m
2. Medium head plants - head between 30 m to 180 m
3. High head plants - head 180 m and above.

According to the Nature of Load:

1. Base load plant
2. Peak load plant.

According to the Quantity of Water Available:

1. Run-off river plant without pondage.
2. Storage reservoir plant
3. Pump storage plant.

Such a plant has a large storage capacity of water; therefore, water collected in the rainy season is utilized during the dry period of the year.

The collection of water is done on a yearly basis; therefore, the capacity of the reservoir required is extremely large compared with the other types of hydroelectric power plants.

Elements of

... Continue reading "Hydro-Electric Power Plants: Classification, Components, and Operation" »

Cisco Router and Switch Configuration

PPP Authentication

1. User Configuration (Matching Passwords on Both Routers)

router(config)# username <hostname_remote_router> password <password>

2. Interface Encapsulation Change

router(config-if)# encapsulation ppp

3.1 Enabling PAP Authentication

router(config-if)# encapsulation ppp
router(config-if)# ppp authentication pap
router(config-if)# ppp pap sent-username <local_username> password <password>

3.2 Enabling CHAP Authentication

router(config-if)# encapsulation ppp
router(config-if)# ppp authentication chap

DHCP Scope Configuration

router(config)# ip dhcp pool <POOL_NAME>
router(config-dhcp)# network <NETWORK_ADDRESS> <NETMASK>
router(config-dhcp)# default-router <GATEWAY_

... Continue reading "Cisco Router and Switch Configuration: PPP, DHCP, VLAN, RIP, OSPF, EIGRP" »

The Internet: A Global Network

The Internet is a global network of interconnected computer networks, linking billions of devices worldwide using TCP/IP. It comprises millions of networks, including private, public, academic, business, and government, and provides extensive information resources.

The History of the Internet

The Internet, originating from ARPANet, an experimental network created in the 1960s by the US military, was launched online in 1969 under a contract by ARPA, connecting four US universities. The history of the Internet reflects the continuous growth of this network, connecting millions of people, businesses, governments, schools, and universities.

The ARPANet

The ARPAnet, created in 1969, began with four computers connecting.... Continue reading "The Internet: A Comprehensive Overview" »

ELECTRICAL INSTALLATIONS:
The electricity used to meet our energy needs (housing, buildings and industries) But there are serious dangers such as fires and electrocucions if facilities do not meet the appropriate security.
Low Voltage Electrotechnical Regulations (REBT) technical conditions and guarantees must be met by electrical installations connected to a low voltage supply in order to:
-Preserve the safety of persons and property.
-Ensure the normal operation of these facilities and prevent disruptions that could cause other facilities and prevent disruptions that could cause other facilities and services.
-Contribute to the technical reliability and efficiency of economic facilities.
Complementary technical instructions (ITC - BT)... Continue reading "Domestic Electrical Installations" »

#useradd nombredeusuario :: para crear usuarios

#passwd :: nombredelusuario

#groupadd :: nombredelgrupo :: (forma normal)

#groupadd -g 600 nombredelgrupo :: (guid sobre 650)

#userdel nombredelusuario :: para deletear usuarios

#groupdelnombredelgrupo :: borrar el grupo

#usermod -G nombredelgrupo nombredeusuario :: para asignar usuario a grupo.

opcion 2: editar archivo /etc/group -> grupo:x:600:usuarioqueseagregara

#nano /etc/shadow :: para poder ver los usuarios y poder bloquearlos

#passwd -l nombredeusuario :: para bloquear usuario

#passwd -u nombredeusuario :: para desbloquear usuario

#sudo passwd :: para cambiar la contraseña de root

# tail /etc/passwd :: paraver informacion de usuarios

#su nombredelotrousuario :: para iniciar sesion como el usuario... Continue reading "Centos 5.5" »

tecnology= is an applied science used 4 solve problems in real life. Create or design goods or services. 2 allows us the adaptation of the enviroment 4 our needs and to pleases our desires

algorithm=Is a set of instructions for resolve problems or performate an action

project aproach: Is Create something to solve a problem. 10 steps: 1. Problem (see and analyze the problem / 2. Research= find information fo problem / 3. Possible solution = we propose all posible solutions / 4. Choose 1 possible solution / 5. Design= we think , design to build the solution / 6. Planning = we do a sceetch of the building / 7. Build= we build the final solution / 8. Check = we check if its correct * if it isn´t correct, we go to find another solution / 9. Presentation... Continue reading "I is correct ii is correct" »

Introduction

In the coming years, the manufacture of mirrors and glass will grow because the demand will be higher.

The process of making glass consists of melting certain substances until they solidify. This process dates back to a time before 2000 BC when glass was worked by hand using molds. Over time, glass has been used to make containers, decorative objects such as jewelry, and also in architecture and industry. At present, its recycling provides an important benefit to conserve the environment and reduce pollution.

Hypothesis

How viable is it to assemble a glass processing plant in Ecuador?

Ecuador does not manufacture glass; it is always imported. What they do in Ecuador is the processing of glass, such as:

• Polishing
• Vice-lane
• Stacking and

... Continue reading "Glass Processing Plant Viability in Ecuador" »

... Continue reading "Content" »

Border Gateway Protocol : EGP protocol which runs between different AS no.