CompTIA A+ 220-1201 > Network Services > Flashcards

Network Services Flashcards

(56 cards)

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1
Q

What does DNS stand for?

A

Domain Name System

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2
Q

What is the main job of a DNS server?

A

Convert domain names (like google.com) to IP addresses

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3
Q

What is DHCP used for?

A

Automatically assign IP addresses and network settings to devices

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4
Q

Why do enterprises use multiple DHCP servers?

A

For redundancy, so if one fails, others can still assign IP addresses

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5
Q

What are the two common file-sharing protocols for Windows and macOS?

A

SMB (Server Message Block) for Windows, AFP (Apple Filing Protocol) for macOS

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6
Q

What protocols can a network printer use?

A

SMB, IPP (Internet Printing Protocol), LPD (Line Printer Daemon)

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7
Q

What is the main job of an email server?

A

Send, receive, and store email messages

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8
Q

What does SIEM stand for?

A

Security Information and Event Manager

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9
Q

What protocol is used to send log files to a central server?

A

Syslog

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10
Q

What does AAA stand for in the context of authentication servers?

A

Authentication, Authorization, and Accounting

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11
Q

What is the main job of an authentication server?

A

Check usernames and passwords, and grant access to services

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12
Q

What is SQL used for?

A

Store and retrieve information from databases

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13
Q

What does NTP stand for?

A

Network Time Protocol

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14
Q

What is the purpose of an NTP server?

A

Keep all devices on a network synchronized with the correct time

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15
Q

What is a spam gateway used for?

A

Filter out unsolicited or spam emails

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16
Q

What is a UTM or next-generation firewall?

A

An all-in-one security appliance that filters traffic, blocks malware, and more

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17
Q

What does a load balancer do?

A

Distribute network traffic across multiple servers to improve performance and uptime

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18
Q

What is a proxy server used for?

A

Act as an intermediary between clients and services, often for security or caching

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19
Q

What does SCADA stand for?

A

Supervisory Control and Data Acquisition

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20
Q

What industries commonly use SCADA systems?

A

Power, oil and gas, manufacturing, water treatment

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21
Q

What is a legacy system?

A

Older technology or equipment still in use, often because it’s critical or expensive to replace

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22
Q

What is an embedded system?

A

A purpose-built device with a hidden operating system, like a fire alarm or time clock

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23
Q

What does IoT stand for?

Study These Flashcards
A

Internet of Things

24
Q

Why might IoT devices be placed on a separate network?

Study These Flashcards
A

To improve security, as IoT devices can be vulnerable to hacking

25
DNS servers are only used to convert domain names to IP addresses.
False (DNS can also do reverse lookups and more)
26
DHCP is only used in home networks.
False (DHCP is used in both home and enterprise networks)
27
SMB is the file-sharing protocol used by macOS.
False (macOS uses AFP; SMB is for Windows)
28
Email servers are expected to have high uptime.
True
29
Syslog is used to send log files to a central server.
True
30
AAA servers are only used in enterprise environments.
True (home networks usually don’t need them)
31
SQL is a type of database server.
True
32
NTP is only used to set the time on computers.
False (NTP is also used for synchronization in encryption and logging)
33
A spam gateway always correctly identifies spam emails.
False (sometimes legitimate emails end up in the spam folder)
34
A UTM appliance can include firewall, VPN, and content filtering.
True
35
Load balancers only work with web servers.
False (they can distribute traffic for many types of services)
36
Proxy servers can cache web content.
True
37
SCADA systems are only used in power plants.
False (they’re used in many industries, like manufacturing and oil/gas)
38
Legacy systems are always outdated and unnecessary.
False (some legacy systems are still critical)
39
IoT devices are always secure.
False (many IoT devices have weak security)
40
A user types "professormesser.com" into their browser. What service converts the domain name to an IP address?
DNS server
41
A new employee connects their laptop to the company network. What service automatically assigns an IP address to their laptop?
DHCP server
42
A company wants to share files between Windows and macOS computers. What protocols should be used?
SMB for Windows, AFP for macOS (or SMB for both, if supported)
43
A network printer is not receiving print jobs. What protocols should you check?
SMB, IPP, or LPD
44
An email server crashes, and users cannot send or receive emails. What should the company do to prevent this in the future?
Use redundant email servers for high availability
45
A company wants to collect logs from all network devices in one place. What protocol and service should be used?
Syslog protocol, sent to a SIEM server
46
A user cannot log in to the company network. What service might be down?
Authentication (AAA) server
47
A database administrator needs to retrieve customer information. What language is used to query the database?
SQL (Structured Query Language)
48
A company’s servers have different times, causing issues with logs and encryption. What service should be used to fix this?
NTP (Network Time Protocol)
49
Users report receiving too many spam emails. What service can help filter out spam?
Spam gateway
50
A company wants to protect its network from malware and unauthorized access. What device can provide multiple security features in one?
UTM (Unified Threat Management) appliance
51
A popular website crashes due to too many visitors. What device can help distribute traffic and prevent crashes?
Load balancer
52
A company wants to monitor and control employee internet usage. What service can act as an intermediary and filter content?
Proxy server
53
A power plant needs to remotely control and monitor equipment. What system is used for this purpose?
SCADA (Supervisory Control and Data Acquisition)
54
A factory still uses a 20-year-old machine that runs critical processes. What is this type of system called?
Legacy system
55
A company installs smart thermostats and security cameras. What type of devices are these?
IoT (Internet of Things) devices
56
A company wants to improve security for its smart coffee makers and fridges. What should they do?
Place IoT devices on a separate, segmented network
CompTIA A+ 220-1201
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