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Networking Essentials Flashcards
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Networking Essentials Flashcards
Networking Essentials Flashcards
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1
Question
What is the first step in preparing a Telnet message for transmission over the network?
Answer
The Telnet-formatted data is provided to the next layer.
2
Question
After providing Telnet-formatted data, what header is added next in the TCP/IP suite?
Answer
The TCP header is added.
3
Question
Following the TCP header, what is added to the Telnet message for routing?
Answer
The IP header is added.
4
Question
What is the final header added to a Telnet message for local network transmission?
Answer
The Ethernet header is added.
5
Question
What are the two minimum security actions for a small office network?
Answer
Implementing a firewall and installing antivirus software.
6
Question
Why does installing a wireless network not enhance security on its own?
Answer
It introduces vulnerabilities that require additional security measures.
7
Question
Which network characteristic is violated when unauthorized users access confidential medical records?
Answer
Security.
8
Question
What specific security aspect fails when patients view others' records wirelessly?
Answer
Confidentiality of data.
9
Question
Which command returns a user to the previous level in the Cisco IOS command hierarchy?
Answer
Exit.
10
Question
What does the Ctrl-Z key combination do in Cisco IOS?
Answer
Returns the user to privileged EXEC mode.
11
Question
How can a technician discard unsaved changes to a router's running configuration?
Answer
Issue the reload command without saving the running configuration.
12
Question
What effect does the copy startup-config running-config command have?
Answer
It adds the startup config to the running config without overwriting.
13
Question
What command prevents unencrypted passwords from appearing in plain text in config files?
Answer
service password-encryption
14
Question
Which command sets an encrypted enable password?
Answer
enable secret
15
Question
When connecting via console to a switch, which password grants access to user EXEC mode?
Answer
lineconin (console line password)
16
Question
What are two key characteristics of RAM in Cisco devices?
Answer
Stores the running configuration; contents lost during power cycle.
17
Question
Why is RAM considered volatile memory in networking devices?
Answer
Data is lost during a power cycle.
18
Question
What is the purpose of Ctrl-Shift-6 in Cisco IOS during a ping?
Answer
To interrupt the ping process.
19
Question
How does a Layer 2 switch enable remote management?
Answer
Through the switch virtual interface (SVI).
20
Question
Which two hostnames follow Cisco IOS naming guidelines?
Answer
RM-3-Switch-2A4; SwBranch799.
21
Question
What does the service password-encryption command achieve on a router?
Answer
Encrypts all plaintext passwords in config files.
22
Question
What are three characteristics of a Switch Virtual Interface (SVI)?
Answer
Not associated with physical interface; provides remote management; associated with VLAN1 by default.
23
Question
How does SSH differ from Telnet in terms of security?
Answer
SSH encrypts messages and uses authentication; Telnet sends plaintext.
24
Question
What is configured when assigning an IP to VLAN1 on a switch?
Answer
Switch Virtual Interface (SVI).
25
Question
What is the result of copy running-config startup-config on a Cisco switch?
Answer
Saves current config to NVRAM for use on reboot.
26
Question
When ServerB contacts HostA across routers, what is the packet's destination IP?
Answer
HostA's IP address.
27
Question
What MAC address does ServerB use in the frame to reach HostA?
Answer
RouterB's MAC address (default gateway).
28
Question
What do network protocols primarily define?
Answer
How messages are exchanged between source and destination.
29
Question
At which OSI layer is a logical address like IP added during encapsulation?
Answer
Network layer.
30
Question
What advantage do open standard protocols provide in networking?
Answer
Allow different OS clients and servers to exchange data.