IOS Fundamentals & Switch/Switch Security

Question 1

What does the command copy running-config startup-config do?

Answer 1

The command saves the configuration from RAM to NVRAM.

Question 2

TFTP

Answer 2

Trivial File Transfer Protocol (used for transferring files between devices) -relies on UDP [port 69]

Question 3

User EXEC Mode

Answer 3

low level, basic operations, limited commands, does NOT allow config

Question 4

Privilege EXEC Mode

Answer 4

many commands, enables file management operations, IOS upgrades

Question 5

Global Config Mode

Answer 5

allow admins to change device configs, only accessible from priv. exec

Question 6

NVRAM

Answer 6

storing device configuration settings in devices (switches/routers)

Question 7

RSA uses two types of keys. Name them and their functions

Answer 7

Public key - encrypts data
Private key- decrypts secure data

Question 8

RSA

Answer 8

public-key crypto system used for secure communication

Question 9

What is the maximum key length in RSA?

Answer 9

2048

Question 10

Which TCP port protocols do SSH and Telnet use?

Answer 10

Telnet: 23
SSH: 22

Question 11

Which encryption method and type does SSH use?

Answer 11

RSA, asymmetric encryption

Question 12

Manual vs. Sticky

Answer 12

Manual - requires static configuration of EACH allowed MAC address (most secure, but very time consuming)
Sticky - Allowed MAC addresses are learned dynamically (faster method)

Question 13

Telnet vs. SSH

Answer 13

Telnet - enable users to manage devices from anywhere - TCP port 23
SSH - similar, but encrypts all data transferred between user/end device - TCP port 22