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Security Analyst Interview Questions > Network Implementation > Flashcards

Network Implementation Flashcards

Net+ N10-009

1
Q

Subnetting

A

Dividing a network into smaller subnetworks to improve management and security.

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2
Q

Crosstalk

A

Effect caused by the unintentional and undesired transmission of a signal from one cable to another

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3
Q

What is VLSM (Variable Length Subnet Masking)?

A

Allows subnets of varying sizes within the same network.

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4
Q

Jitter

A

Time delay between when a signal is transmitted and when it’s received over a network connection

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5
Q

NetFlow

A

Collects IP traffic information and monitoring network flow.

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6
Q

What is trunking?

A

Technique used to carry multiple VLANs over a single network link using VLAN tagging.

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7
Q

What does STP (Spanning Tree Protocol) do?

A

Prevents network loops by creating a loop-free logical topology.

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8
Q

What is link aggregation?

A

Combines multiple physical network connections into one logical connection to increase bandwidth and provide redundancy.

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9
Q

What is port forwarding?

A

Directs external network traffic to a specific internal IP address and port.

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10
Q

What is IPSec (Internet Protocol Security) used for?

A

Secures IP communications through encryption and authentication.

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11
Q

What do WPA (Wi-Fi Protected Access) and WPA2 provide?

A

Provide security protocols to protect wireless networks from unauthorized access.

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12
Q

What is 802.1X used for?

A

Provides port-based network access control for securing network access.

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13
Q

What does ARP stand for and what does it do?

A

Address Resolution Protocol maps an IP address to a MAC address on a local network.

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14
Q

What is a DHCP lease?

A

Is the duration for which an IP address is assigned to a device before it must be renewed.

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15
Q

What is a DHCP scope?

A

Range of IP addresses that a DHCP server can assign to clients on a network.

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16
Q

What is VLAN tagging?

A

Adds a tag to Ethernet frames to identify which VLAN the frame belongs to

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17
Q

What is a VPN tunnel?

A

A secure, encrypted connection established between a client and a VPN server over a public network.

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18
Q

What is PAT in networking?

A

Maps multiple private IP addresses to a single public IP address with different port numbers.

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19
Q

What does MPLS stand for and what is its use?

A

Multiprotocol Label Switching is used to efficiently route data through a network based on labels rather than IP addresses.

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20
Q

What does RADIUS stand for and what is its function?

A

Remote Authentication Dial-In User Service is used for centralized authentication, authorization, and accounting for network access.

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21
Q

What is throughput?

A

Rate at which data is successfully transmitted over a network, measured in bits per second.

22
Q

What does MTU stand for and what does it specify?

A

Maximum Transmission Unit specifies the largest size of a packet that can be transmitted over a network.

23
Q

What does BGP stand for and what is its role?

A

Border Gateway Protocol is used to exchange routing information between different autonomous systems on the internet.

24
Q

What is network latency?

A

Latency is the delay before a transfer of data begins following an instruction for its transfer.

25
Q

What is WEP (Wired Equivalent Privacy)?

A

Provides basic encryption for Wi-Fi networks but is considered insecure due to its vulnerabilities.

26
Q

Autonomous system number

A

Globally unique 16 digit identification number

27
Q

WPA2 Enterprise

A

Wi-Fi security protocol that uses 802.1X authentication and encryption to provide secure wireless network access for businesses.

28
Q

WPA Personal

A

Wi-Fi security protocol that uses a pre-shared key for encryption and authentication on home networks.

29
Q

MDF (Main Distribution Frame):

A

Is the central point in a building’s network infrastructure where incoming and outgoing network connections are managed and distributed.

30
Q

IDF (Intermediate Distribution Frame)

A

Network distribution point used to connect network cables between the MDF and end-user devices or areas.

31
Q

Patch Panel

A

Network hardware device that provides a centralized point to connect and manage network cables and connections.

32
Q

LACP (Link Aggregation Control Protocol)

A

Protocol is used to group numerous physical ports to make one high bandwidth path.

33
Q

NFC (Near Field Communication)

A

Communication between two electronic devices over a distance of 4 cm or less.

34
Q

What is the primary purpose of implementing link aggregation on a network switch?

A

Create a single logical link with more bandwidth by combining multiple physical links.

35
Q

What are Jumbo frames and why are they concerning?

A

Ethernet frames whose MTU is greater than 1500 and are commonly used on a SAN

36
Q

Transmit Power Control (TPC)

A

Allows devices to adjust their transmitting power levels

37
Q

Frequency bands used by 802.11 networks include

A

2.4 and 5.0 Ghz

38
Q

802.11a frequency

A

5.0 GHz

39
Q

802.11b frequency

A

2.4 Ghz

40
Q

802.11g frequency

A

2.4 Ghz

41
Q

802.11n frequency

A

2.4 and 5.0 Ghz

42
Q

802.11ac (wi-fi 5) frequency

A

5.0 Ghz

43
Q

802.11ax (wi-fi 6) frequency

A

2.4 and 5.0 Ghz

44
Q

In data center fire safety, what system is designed to minimize damage to networking infrastructure with the least environmental concerns during a fire emergency?

A

Clean Agent Fire Suppression

45
Q

North-south traffic flow

A

Data transmission pattern that describes data flow between local network endpoints and external networks and services

46
Q

Class A IPv4

A

1.x.x.x to 126.x.x.x

47
Q

Class B IPv4

A

128.x.x.x - 191.x.x.x

48
Q

Class C IPv4

A

192.x.x.x - 223.x.x.x

49
Q

Class D IPv4

A

224.x.x.x - 239.x.x.x

50
Q

Class E IPv4

A

240.x.x.x - 255.x.x.x

51
Q

T568B

A

1) Orange/White
2) Orange
3) Green/White
4) Blue
5) Blue/White
6) Green
7) Brown/White
8) Brown

52
Q

T568A

A

1) Green/White
2) Green
3) Orange/White
4) Blue
5) Blue/White
6) Orange
7) Brown/White
8) Brown

Security Analyst Interview Questions (9 decks)

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