Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Security Analyst Interview Questions > IT Infrastructure Engineer - Fiber > Flashcards

IT Infrastructure Engineer - Fiber Flashcards

1
Q

What is single-mode fiber used for?

A

Long-distance communication with higher bandwidth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the difference between fusion splicing and mechanical splicing?

A

Fusion splicing fuses fibers together using heat, while mechanical splicing aligns and holds fibers together with a connector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How does an OTDR locate a fault in a fiber optic cable?

A

By measuring the time and intensity of reflected light pulses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How do you perform a continuity test on a fiber optic cable?

A

Use a light source and detector to ensure light passes through the cable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does OPGW stand for and what does it do?

A

Is a cable that integrates optical fibers for communication with a traditional overhead ground wire for power line protection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is ADSS and what does it do?

A

Is a fiber optic cable designed to be installed without metallic support

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the purpose of using a VFL in fiber optics?

A

To inject visible light into the fiber to locate faults and breaks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How does modal dispersion affect multi-mode fiber?

A

Causes different light modes to travel at different speeds, leading to signal distortion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a fiber optic coupler used for?

A

To split or combine optical signals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is backscatter in fiber optics?

A

Reflection of light that occurs when it encounters irregularities in the fiber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How does chromatic dispersion affect single-mode fiber?

A

Causes different wavelengths to travel at different speeds, leading to signal broadening

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is an attenuator used for in fiber optics?

A

To reduce the power level of an optical signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How does an optical circulator work?

A

Directs light signals in one direction from port to port, used in WDM systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the benefits of single-mode fiber over multi-mode?

A

Higher bandwidth, longer distances, and less modal dispersion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is a fiber optic pigtail?

A

A short fiber cable with a connector on one end and bare fiber on the other, used for splicing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

hat is wavelength-division multiplexing (WDM)?

A

A technology that combines multiple optical signals on a single fiber by using different wavelengths

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is a loopback test used for in fiber optics?

A

To verify the integrity of a fiber optic connection by sending a signal through and back

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

To verify the integrity of a fiber optic connection by sending a signal through and back

A

Converts electrical signals to optical signals and vice versa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How does an inline amplifier help in fiber optic communication?

A

Boosts signal strength for long-distance transmission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the difference between simplex and duplex fiber cables?

A

Simplex has one fiber for one-way communication; duplex has two fibers for two-way communication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are the types of fiber optic connectors?

A

SC, LC, ST, FC, and MTP/MPO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What does a visual fault locator (VFL) detect?

A

Breaks and faults in fiber optic cables

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the purpose of using an optical coupler?

A

To split or combine optical signals in a fiber optic network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the function of an optical isolator?

A

To allow light to pass in one direction and block it in the opposite direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

How does a wavelength-division multiplexer (WDM) work?

A

Combines multiple optical signals into a single fiber by using different wavelengths

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the role of an OTDR in fiber optic networks?

A

To measure loss, reflectance, and locate faults along the fiber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is a fiber optic patch cord?

A

A short length of optical fiber with connectors on both ends, used to connect devices

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What is a VLAN?

A

Virtual Local Area Network, which segments a network into different broadcast domains.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is NAT and how does it work?

A

Network Address Translation; converts private IP addresses to a public IP address for internet access

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is the purpose of load balancing?

A

To distribute network traffic evenly across multiple servers to optimize resource use

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is the role of a router in a network?

A

Forwards data packets between different networks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

How does HTTPS differ from HTTP?

A

HTTPS provides a secure, encrypted connection; HTTP does not

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the purpose of a subnet mask?

A

Divides an IP address into network and host portions

34
Q

What is the function of a switch in a network?

A

Connects devices within a network and forwards data to the intended recipient

35
Q

What is QoS in networking?

A

Quality of Service; prioritizes certain types of traffic to ensure performance

36
Q

What is the difference between TCP and UDP?

A

TCP is connection-oriented and reliable; UDP is connectionless and faster but less reliable

37
Q

What is BGP used for?

A

Border Gateway Protocol; used for routing between different autonomous systems on the internet

38
Q

What is the function of an access point in a wireless network?

A

Connects wireless devices to a wired network

39
Q

What is the role of a MAC address?

A

A unique identifier assigned to network interfaces for communications on the physical network

40
Q

What is ARP and what does it do?

A

Address Resolution Protocol; maps IP addresses to MAC addresses

41
Q

What is the purpose of a network topology diagram?

A

Visually represents the arrangement of a network’s nodes and connections

42
Q

How does a hub differ from a switch?

A

A hub broadcasts data to all devices; a switch sends data only to the intended recipient

43
Q

What is SNMP used for?

A

Simple Network Management Protocol; used for managing and monitoring network devices

44
Q

What is a DMZ in networking?

A

Demilitarized Zone; a physical or logical subnetwork that separates an internal network from untrusted external networks

45
Q

How does a load balancer work?

A

Distributes incoming network traffic across multiple servers to ensure no single server becomes overwhelmed

46
Q

What is a trunk port in VLAN configurations?

A

A port that carries traffic for multiple VLANs between switches

47
Q

What is the purpose of a routing table?

A

Stores the routes to various network destinations

48
Q

What is OSPF and how does it function?

A

Open Shortest Path First; a routing protocol that uses link-state information to make routing decisions

49
Q

What is the function of a DHCP relay?

A

Forwards DHCP requests from clients in remote subnets to a central DHCP server

50
Q

What is the role of MPLS in networking

A

Multiprotocol Label Switching; directs data from one network node to the next based on short path labels

51
Q

What is the function of a Content Delivery Network (CDN)?

A

Distributes content closer to end-users to improve access speed and reliability

52
Q

What are the main purposes of a proxy server?

A

To filter requests, improve performance through caching, and hide the user’s IP address

53
Q

What is Software-Defined Networking (SDN)?

A

An approach to network management that enables programmable network configurations for improved control and flexibility

54
Q

How do you isolate a fault in a network segment?

A

Use network segmentation, trace the route, and test individual components

55
Q

What is the role of firmware updates in network devices?

A

Fix bugs, patch security vulnerabilities, and add new features.

56
Q

What is Active Directory, and what is it used for?

A

Active directory was developed by Microsoft and is used for managing and organizing network resources in Windows environments.

57
Q

What is the difference between a stateful and a stateless firewall?

A

A stateful firewall monitors the state of active connections and makes decisions based on the context of the traffic, while a stateless firewall only examines individual packets without considering the state of the connection.

58
Q

What is SSL/TLS, and why is it important for network security?

A

SSL and TLS provide encryption and secure communication over networks, protecting data integrity and privacy.

59
Q

How do you configure DNS settings on a network device?

A

Access the device’s network settings, enter the DNS server IP addresses, and save the configuration to ensure the device can resolve domain names.

60
Q

What is the role of a VPN in WAN connectivity?

A

A VPN (provides secure, encrypted connections over a WAN, allowing remote users to access the network as if they were directly connected.

61
Q

How do you configure VLANs on a switch?

A

Create VLANs, assign ports to VLANs, configure trunk ports to carry multiple VLANs, and ensure proper VLAN tagging and membership.

62
Q

How do you integrate a new switch into an existing network?

A

Configure the switch with appropriate VLAN settings, IP addresses, and connection ports, and ensure it is properly connected to the network

63
Q

How do you connect and configure a new router in a network?

A

Connect the router to the network, configure WAN and LAN settings, set up routing protocols, and verify connectivity.

64
Q

What are the steps for integrating a firewall into an existing network?

A

Plan the network topology, configure firewall rules, set up NAT and VPN as needed, and test the firewall to ensure proper traffic control and security

65
Q

How does a hybrid cloud model work?

A

Combines on-premises infrastructure with public cloud services, allowing data and applications to be shared between them, providing flexibility and optimized resource utilization.

66
Q

What is IaaS?

A

Provides virtualized computing resources over the internet

67
Q

What is PaaS?

A

Offers a platform for developing and managing applications

68
Q

What is SaaS?

A

Delivers software applications over the internet

69
Q

How do you secure data in a cloud environment?

A

Implement encryption, access controls, regular audits, and compliance with security standards to protect data in transit and at rest.

70
Q

What is the purpose of using containerization in cloud infrastructure?

A

Isolates applications enabling consistent operation across different environments and simplifying deployment and scaling

71
Q

How does multicast routing differ from unicast and broadcast routing?

A

Multicast routing delivers data to multiple specific destinations simultaneously, unicast sends data to a single destination, and broadcast sends data to all devices on a network segment.

72
Q

How does the TCP three-way handshake work?

A

The TCP three-way handshake establishes a connection between a client and server. It involves three steps: SYN (synchronize) packet sent by the client, SYN-ACK (synchronize-acknowledge) packet sent by the server in response, and ACK (acknowledge) packet sent by the client to confirm the connection.

73
Q

What are OSPF areas, and why are they used?

A

OSPF areas are subdivisions of an OSPF network that simplify management and reduce routing overhead by limiting the scope of route propagation and updates.

74
Q

What is EIGRP?

A

Enhanced Interior Gateway Routing Protocol is a hybrid routing protocol developed by Cisco that combines features of both distance-vector and link-state protocols, providing efficient routing and fast convergence

75
Q

What is LDAP and how is it used?

A

LDAP is an open protocol used to access and manage directory services over a network. It is designed to provide an efficient way of interacting with directory services that store hierarchical and attribute information about users, groups, and devices.

76
Q

How would you install and troubleshoot software?

A

For installing software ensuring your system meets the required specifications and dependencies. For troubleshooting, address issues by checking for system compatibility, resolving conflicts or errors, and applying updates or patches.

77
Q

What is a SAN?

A

Storage Area Network provides block level storage accessed by servers over a high-speed network, ideal for high-performance and scalable data storage needs.

78
Q

What is NAS?

A

Network Attached Storage offers file level storage accessible over a standard network, making it suitable for easy file sharing and centralized storage management in a network.

79
Q

What is WLAN?

A

Wireless Land Area Network uses wireless communication technology to connect devices within a limited area, such as a home, office, or campus, allowing them to access network resources and the internet without physical cables.

80
Q

What is a PLC and how does it work?

A

Is an industrial computer designed to control and automate machinery and processes by executing programmed instructions based on input signals and producing output actions, such as controlling motors, valves, and other mechanical devices.

Security Analyst Interview Questions (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions