Configure a Switch with Initial Settings

Switch Boot Sequence

After a Cisco switch is powered on, it goes through the following boot sequence:

1. First, the switch loads a power-on self-test (POST) program stored in ROM. POST checks the CPU subsystem. It tests the CPU, DRAM, and the portion of the flash device that makes up the flash file system.

2. Next, the switch loads the boot loader software. The boot loader is a small program stored in ROM and is run immediately after POST successfully completes.

3. The boot loader performs low-level CPU initialization. It initializes the CPU

The Switched Environment

Frame Forwarding

Switching as a General Concept in Networking and Telecommunications

The concept of switching and forwarding frames is universal in networking and telecommunications. Various types of switches are used in LANs, WANs, and the public switched telephone network (PSTN). The fundamental concept of switching refers to a device making a decision based on two criteria:

Switched Networks

Role of Switched Networks

The role of switched networks has evolved dramatically in the last two decades. It was not long ago that flat Layer 2 switched networks were the norm. Flat Layer 2 data networks relied on the basic properties of Ethernet and the widespread use of hub repeaters to propagate LAN traffic throughout an organization. As shown in Figure 1, networks have fundamentally changed to switched LANs in a hierarchical network. A switched LAN allows more flexibility, traffic management, and additional features, such as:

Converged Networks

Growing Complexibility of Network

Our digital world is changing. The ability to access the Internet and the corporate network is no longer confined to physical offices, geographical locations, or time zones. In today’s globalized workplace, employees can access resources from anywhere in the world and information must be available at any time, and on any device, as shown in Figure 1. These requirements drive the need to build next-generation networks that are secure, reliable, and highly available.

IT Essentials Final Exam

1.Which power criterion will affect the number of internal drives that are installed in a computer?

+5VDC output
+20VDC output
AC input
DC output
power supply voltage
power supply wattage

2.A customer needs additional storage space on an older computer.

IT Essentials Practice Exam Answer

1.Which two elements should typically be included in a computer security policy? (Choose two.)

technical details of the biometric systems used
a list of acceptable user passwords
an acceptable computer usage statement for the organization
details of the data file access procedures
requirements necessary for data to remain confidential on a network

2.Which type of power connector is used to connect devices such as optical drives and hard drives?

IT Essentials Chpater 12 Answer

1.Which two operating systems can be upgraded to Windows XP Home? (Choose two.)

Windows 95
Windows 3.1
Windows 98
Windows 98 SE
Windows NT workstation

2.A customer using a Windows XP computer is complaining that a new card reader is not working. A technician tests the card reader on a Windows 7 computer and does not detect any problems.