Calling all aspiring network engineers, IT enthusiasts, and tech-savvy problem solvers! Ready to challenge your expertise with a dynamic computer networking quiz designed to put your knowledge to the ultimate test? Dive into our internet protocols quiz section to decipher TCP/IP fundamentals, tackle a comprehensive network types test, and explore the evolution of modem technology quiz topics - all while discovering the breadth of modern internet services quiz applications. Whether you're studying for certification or aiming to sharpen your troubleshooting skills, this is your chance to learn, grow, and compete. For extra practice, browse through our interactive networks MCQ questions or try your hand at some real-world internet questions to gauge your progress. Jump in now and prove your prowess!
What does HTTP stand for?
Hyperlink Transmission Protocol
Hyperlink Text Transfer Protocol
HyperText Transmission Program
HyperText Transfer Protocol
HTTP stands for HyperText Transfer Protocol, which is the foundation of data communication for the World Wide Web. It defines how messages are formatted and transmitted and how web servers and browsers should respond to various commands. HTTP operates as an application layer protocol in the TCP/IP suite. For more details, see https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol.
Which protocol uses port 80 by default?
SMTP
HTTP
FTP
SSH
Port 80 is the default port for HTTP, the protocol used for transferring web pages over the Internet. Web browsers connect to servers on port 80 unless a different port is specified. This default helps standardize web traffic routing and firewall rules. Learn more at https://en.wikipedia.org/wiki/Transmission_Control_Protocol.
What is the primary function of DNS in networking?
Translate domain names to IP addresses
Route packets between networks
Encrypt web traffic
Assign IP addresses dynamically
DNS, or Domain Name System, translates human-readable domain names into IP addresses that computers use to identify each other on the network. This directory service is essential for locating services and devices through familiar names. Without DNS, users would have to remember numeric IP addresses for every resource. More information is available at https://en.wikipedia.org/wiki/Domain_Name_System.
At which OSI layer does Ethernet primarily operate?
Data Link Layer
Transport Layer
Physical Layer
Network Layer
Ethernet functions at the Data Link layer (Layer 2) of the OSI model, where it handles framing, MAC addressing, and error detection. It relies on the Physical layer for signaling the bits on the medium. The Data Link layer ensures reliable node-to-node data transfer over physical links. See more at https://en.wikipedia.org/wiki/Ethernet.
Which IP version uses 128-bit addresses?
ARP
IPv6
IPX
IPv4
IPv6 uses 128-bit addresses, allowing for a vastly larger address space than the 32-bit addresses used by IPv4. This expansion was necessary to accommodate the growing number of internet-connected devices. IPv6 also introduces features like simplified header format and improved security. Read more at https://en.wikipedia.org/wiki/IPv6.
What is the main purpose of DHCP?
Create virtual private networks
Resolve domain names
Dynamically assign IP addresses
Encrypt network traffic
DHCP, or Dynamic Host Configuration Protocol, automatically assigns IP addresses and other network configuration parameters to devices on a network. This automation reduces the need for manual configuration and prevents address conflicts. DHCP operates on a lease basis to manage address allocation efficiently. More details can be found at https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol.
Which transport-layer protocol is connectionless?
UDP
TLS
TCP
ICMP
UDP (User Datagram Protocol) is a connectionless protocol in the transport layer that sends datagrams without establishing a prior connection. This reduces overhead and latency but does not guarantee delivery or order. UDP is suitable for applications like video streaming and gaming where speed is critical. Learn more at https://en.wikipedia.org/wiki/User_Datagram_Protocol.
What does LAN stand for?
Local Area Network
Local Access Node
Logical Area Network
Long Area Network
LAN stands for Local Area Network, which connects devices within a limited area such as a home, school, or office. LANs typically use Ethernet or Wi-Fi for connectivity and allow resource sharing among devices. They offer high data transfer rates and low latency within the covered area. See https://en.wikipedia.org/wiki/Local_area_network.
Which protocol ensures reliable data transmission via acknowledgments and retransmission?
TCP
ICMP
UDP
IP
TCP (Transmission Control Protocol) ensures reliable data transmission by establishing a connection, using acknowledgments for confirmed delivery, and retransmitting lost segments. It also implements flow control and congestion control mechanisms. TCP is widely used for applications that require guaranteed delivery, such as web browsing and file transfers. More information is at https://en.wikipedia.org/wiki/Transmission_Control_Protocol.
What is a subnet mask used for in IPv4 networking?
Determining the network and host portions of an IP address
Encrypting IP packets
Assigning IP addresses dynamically
Routing between different networks
A subnet mask in IPv4 networking separates the network portion of an IP address from the host portion by using contiguous bits set to 1. This allows devices to determine whether a destination IP is on the local subnet or requires routing through a gateway. Subnetting aids in efficient IP address management and reduces broadcast domains. See https://en.wikipedia.org/wiki/Subnetwork.
Which command-line tool can you use to test connectivity to a specific port on a remote host?
ping
traceroute
telnet
nslookup
The telnet command can be used to test TCP connectivity to a specific port on a remote host by attempting to establish a session. If the port is open and reachable, the connection will succeed; otherwise, it will fail. This method is useful for troubleshooting port accessibility. Learn more at https://en.wikipedia.org/wiki/Telnet.
Which networking model has seven layers including the Session layer?
DoD model
Hybrid model
OSI model
TCP/IP model
The OSI (Open Systems Interconnection) model defines seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. It serves as a conceptual framework for understanding and designing network protocols and devices. Although the TCP/IP model is more commonly used, OSI remains a teaching tool. More details at https://en.wikipedia.org/wiki/OSI_model.
At which layer does the IP protocol operate in the TCP/IP model?
Transport layer
Application layer
Internet layer
Link layer
In the TCP/IP model, IP (Internet Protocol) operates at the Internet layer, responsible for logical addressing and routing of packets between networks. This layer ensures that data finds the correct destination across interconnected networks. It sits between the Link layer and the Transport layer. Further reading at https://en.wikipedia.org/wiki/Internet_layer.
What network device separates collision domains but not broadcast domains?
Router
Switch
Hub
Bridge
A network switch isolates collision domains by forwarding frames only to the destination port, but it still forwards broadcast frames to all ports within the same VLAN, thus not separating broadcast domains. Routers, on the other hand, separate broadcast domains. Switches improve network efficiency by reducing collisions. See https://en.wikipedia.org/wiki/Network_switch.
What is the function of NAT in IPv4?
Route packets based on MAC addresses
Encrypt IP packets
Translate private IP addresses to a public IP address
Assign IP addresses
NAT (Network Address Translation) maps private IP addresses used within a local network to a public IP address for Internet communication. This mechanism conserves public address space and adds a layer of security by hiding internal addresses. NAT can be implemented in various modes like static, dynamic, and PAT. More info at https://en.wikipedia.org/wiki/Network_address_translation.
Which port is used by HTTPS by default?
443
80
25
21
HTTPS (HTTP Secure) uses port 443 by default to provide encrypted communication over TLS/SSL. It ensures data confidentiality and integrity between the web server and client. Port 80 is used for unencrypted HTTP traffic, while port 443 indicates secure HTTP. Learn more at https://en.wikipedia.org/wiki/HTTPS.
In CIDR notation, what does a /24 represent?
A subnet mask of 255.255.0.0
A subnet mask of 255.255.255.0
A subnet mask of 255.255.255.128
A subnet mask of 255.0.0.0
In CIDR notation, /24 indicates that the first 24 bits of the IP address are used for the network portion, which corresponds to a subnet mask of 255.255.255.0. This provides 256 IP addresses, including network and broadcast addresses. CIDR allows for flexible subnetting compared to classful addressing. More details at https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing.
Which address resolution protocol maps IP addresses to MAC addresses?
ARP
RARP
DNS
DHCP
ARP (Address Resolution Protocol) translates IP addresses into MAC addresses on a local network segment by broadcasting a request and receiving the hardware address. RARP performs the reverse mapping. ARP is essential for frame forwarding in Ethernet networks. See https://en.wikipedia.org/wiki/Address_Resolution_Protocol.
Which protocol is commonly used to securely copy files over SSH?
FTP
TFTP
SCP
HTTP
SCP (Secure Copy Protocol) uses SSH for data transfer and provides the same authentication and security as SSH. It is commonly used for securely copying files between hosts on a network. SCP encrypts both the file data and any passwords exchanged. More details at https://en.wikipedia.org/wiki/Secure_copy.
In IPv6, what does SLAAC stand for?
Subnet Local Access Automatic Configuration
Stateless Address Autoconfiguration
Simple Local Address Allocation Control
Secure Link Access and Authorization Control
SLAAC stands for Stateless Address Autoconfiguration, a method in IPv6 that allows devices to generate their own addresses using network prefix information from router advertisements. It operates without the need for a stateful DHCP server for address assignment. SLAAC simplifies network configuration in IPv6 environments. Learn more at https://en.wikipedia.org/wiki/Stateless_Address_Autoconfiguration.
Which routing protocol uses Dijkstra's algorithm?
EIGRP
BGP
RIP
OSPF
OSPF (Open Shortest Path First) is a link-state routing protocol that uses Dijkstra's algorithm to calculate the shortest path tree for route selection. Each OSPF router maintains a map of network topology and computes routes independently. This algorithm ensures efficient and loop-free routing. More info at https://en.wikipedia.org/wiki/Open_Shortest_Path_First.
What does TDM stand for in networking?
Time Division Multiplexing
Transmission Delay Management
Time Data Monitoring
Transport Data Module
TDM (Time Division Multiplexing) is a technique that divides the time domain into slices and allocates fixed time slots to each data stream over a shared medium. This allows multiple signals to share a single communication channel without interference. TDM is widely used in digital telephony and communication systems. Further reading at https://en.wikipedia.org/wiki/Time-division_multiplexing.
BGP is classified as which type of routing protocol?
Link-State protocol
Path-Vector protocol
Distance-Vector protocol
Hybrid protocol
BGP (Border Gateway Protocol) is a path-vector protocol used to exchange routing information between autonomous systems on the Internet. It maintains the path of AS hops in route advertisements to avoid routing loops and policy violations. BGP's path-vector approach combines aspects of distance-vector and policy-based routing. More on BGP at https://en.wikipedia.org/wiki/Border_Gateway_Protocol.
PPP encapsulates network layer protocols for transmission over what type of links?
Frame Relay networks
Wireless LANs
Point-to-point links
Ethernet LANs
PPP (Point-to-Point Protocol) encapsulates and transports network layer protocol datagrams, such as IP, over point-to-point links like serial connections, ISDN, or modem lines. It provides features like authentication, compression, and error detection. PPP is commonly used for dial-up and VPN connections. Read more at https://en.wikipedia.org/wiki/Point-to-Point_Protocol.
In IPv6 networks, who is responsible for fragmenting packets?
Only routers along the path
Only the source node
Only the destination node
Both source and routers
In IPv6, only the source node performs packet fragmentation based on Path MTU Discovery results; intermediate routers do not fragment packets. This design reduces processing load on routers and relies on the source to send appropriately sized packets. If a packet is too large, routers send an ICMPv6 Packet Too Big message to the source. More at https://tools.ietf.org/html/rfc8200.
What is the minimum required MTU size for IPv6 according to RFC 8200?
1500 bytes
1024 bytes
1280 bytes
576 bytes
RFC 8200 specifies that all IPv6 links must support an MTU of at least 1280 bytes. Hosts should perform Path MTU Discovery to ensure that sent packets do not exceed the link's MTU. If a link cannot handle this minimum, it must be able to fragment at the link layer. See https://tools.ietf.org/html/rfc8200#section-5.
Which IPv6 extension header is used to specify a list of intermediate nodes a packet should visit?
Hop-by-Hop Options header
Fragment header
Destination Options header
Routing header
The IPv6 Routing header is an extension header that specifies a route for the packet by listing intermediate nodes (similar to source routing). It enables dynamic routing paths and can assist with network testing or load balancing. Other extension headers serve different purposes like fragmentation or hop-by-hop options. More details at https://tools.ietf.org/html/rfc8200#section-4.4.
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AI Study Notes
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Study Outcomes
Understand Core Internet Protocols -
Identify the roles and functions of protocols such as TCP/IP, HTTP, and FTP within a networked environment.
Differentiate Network Types -
Compare and contrast LAN, WAN, WLAN, and PAN architectures to determine their appropriate use cases.
Identify Modem Technologies -
Distinguish between dial-up, DSL, and cable modems by analyzing their performance and connectivity characteristics.
Explain Essential Internet Services -
Describe how services like DNS, DHCP, and VoIP support reliable internet communication and resource management.
Apply Troubleshooting Techniques -
Use best practices to diagnose and resolve common network issues affecting connectivity and performance.
Evaluate Networking Scenarios -
Assess real-world case studies to make informed decisions about network design and optimization.
Cheat Sheet
Mastering the TCP/IP Model -
The four-layer TCP/IP model (Link, Internet, Transport, Application) is a staple in any computer networking quiz or internet protocols quiz. Use the mnemonic "Please Do Important Activities" to recall layers from Link to Application, and map them against the OSI model to see how TCP/IP consolidates functions (source: RFC 1122). This structured approach ensures you can explain why IP, TCP, and UDP each perform distinct tasks.
Subnetting and IP Addressing -
In IPv4, dotted-decimal notation (e.g., 192.168.1.0/24) and the formula Hosts = 2^(32−prefix)−2 let you calculate usable hosts quickly - 254 for a /24 mask (source: Cisco Networking Academy). Practice converting binary to decimal and remember that formula to ace the addressing portion of any computer networking quiz. Visualizing bitwise AND operations on subnet masks makes subnetting intuitive.
Wired LAN vs. Wireless LAN -
Wired LANs (IEEE 802.3) deliver stable 10/100/1000 Mbps links using Ethernet cables, while WLANs (IEEE 802.11) offer mobility with up to 9.6 Gbps on Wi-Fi 6 - an essential distinction in any network types test. Remember "Cables are stable, waves are mobile" to quickly differentiate wired vs wireless characteristics (source: IEEE Standards Association). Knowing throughput, range, and security differences boosts your confidence during questions.
Modem Modulation Methods -
Modems use Amplitude, Frequency, and Phase Shift Keying (ASK, FSK, PSK) to convert digital data into analog signals - critical knowledge for a modem technology quiz (source: ITU-T V.22). Use the acronym "AFPS" (Amplitude, Frequency, Phase, Shaping) to list common modulation schemes, and sketch their sine-wave shifts for visual memory. Clear grasp of these methods helps you explain how modems achieve reliable long-distance transmission.
Essential Internet Services -
Core services - DNS for name resolution, HTTP/HTTPS for web browsing, and SMTP/IMAP for email - form the basis of any internet services quiz (source: IETF RFC 1034, RFC 7230, RFC 5321). Try the rhyme "Do Have Some Mail" to recall DNS, HTTP, SMTP in order of typical usage. Master these protocols to understand how devices communicate and why each service behaves the way it does.
