Chapter 1
What cable encodes data into pulses of light?
Fiber-Optic Cables
What does "CLI" stand for?
Command Line Interface
What does "POP3" stand for?
Post Office Protocol version 3
Which media uses patterns of microwaves to represent bits?
Wireless
What do IPv4 addresses begin as?
Binary
What three types of media do modern networks use to interconnect devices?
- Wired
- Fiber-Optic
- Wireless
What does the "Privileged EXEC Mode" command do?
The mode allows access to all commands and features. The user can use any monitoring commands and execute configuration and management commands.
What is Hypertext Transfer Protocol(HTTP)?
A set of rules for exchanging text, graphic images sound, video, and other multimedia files on the World Wide Web ?
Which of these is a measure of the transfer of bits across the media?
Throughput
Binary is a numbering system that consists of...
digits 0 and 1 called bits.
How is an Extranet used?
To provide secure and safe access to individuals who work for a different organization but require access to the organization’s data.
What command would be used to encrypt passwords?
service password-encryption
What is Internet Message Access Protocol(IMAP)?
Enables clients to access email stored on a mail server as well as maintaining email on the server.
True or false? The physical layer is only concerned with wired network connections.
False
What is the binary positional value table, starting from the left and ending at the right?
128, 64, 32, 16, 8, 4, 2, 1
What terminology is used to describe how devices and media connect to each other?
- Network Interface Card (NIC)
- Physical Port
- Interface
What are some of the guidelines to creating a password?
- Use passwords that more than eight characters in length
- Use a combination of upper and lowercase letters, numbers, special characters, and/or numeric sequences.
- Avoid using the same password for all devices.
- Do not use common words because they are easily guessed.
What is "De-encapsulation"?
The process used by a receiving device to remove one or more of the protocol headers. The data is de-encapsulated as it moves up the stack toward the end-user application.
What PDU is received by the physical layer for encoding and transmission?
Frame
Which of the following is the binary equivalent to the 172.16.31.30 IP address?
10101100.00010000.00011111.00011110
What are all the functions of Intermediary Network Devices?
- Regenerate and retransmit communication signals
- Maintain information about what pathways exist through the network and internetwork.
- Notify other devices of errors and communication failures.
- Direct data along alternate pathways when there is a link failure.
- Classify and direct messages according to priorities.
- Permit or deny the flow of data, based on security settings.
What is the process to creating banner messages?
- configure terminal
- banner motd # Message #
What protocols does a message sent over a network typically require?
- HTTP
- TCP
- IP
- Ethernet
What are the wireless standards?
- Wi-Fi
- Bluetooth
- WiMAX
- Zigbee
What is the decimal equivalent of A9?
169