Introduction to Networking Concepts Practice Test

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• How do classful addressing and CIDR differ?
• Which model was developed by ISO after the TCP/IP model to provide greater granularity?
• Which network topology is described as a hybrid of hub-and-spoke topology and full-mesh topology?
• Which command is used to display information about a remote user's login details, including last login times, in a Linux environment?
• Which term refers to the copper cabling category designed for voice and data that supports up to 10 Mbps?
• Which category has been practically replaced by Cat5e and is used in Ethernet LANs with two twisted pairs?
• In a switched Ethernet network, which statement about collision domains is correct?
• Which network type would best be described as connecting devices across the widest geographic area among the listed types?
• Which cloud service model would you select if you want access to virtual machines and storage while managing your own operating system and applications?
• Which command is used to configure the kernel network interfaces at boot in Linux and is primarily used for debugging or tuning the system?
• Which load balancing method uses the client’s IP address to select the backend server, helping maintain session affinity?
• Which OSI layers map to the TCP/IP Link layer?
• Which statement BEST describes unicast addressing?
• What is the role of DHCP in IP networking?
• A connector that supports two pairs of wires (four total) and is typically used in telephones?
• Which tool is frequently used for vulnerability assessment by mapping hosts and services on a network?
• What is the purpose of ARP in an IPv4 network?
• Which network diagnostic command, similar to traceroute, displays the path taken by a packet and can be run by any user without superuser privileges on Linux?
• Which command, when run with the /all option, provides detailed information about each network adapter including MAC address, DHCP status, and lease information?
• Which device is commonly used to connect networks and forward packets based on IP addresses at Layer 3?
• Which OSI layer is associated with devices such as NICs and wireless network adapters for frame delivery?
• Which command displays the IP-to-MAC address mappings stored in the ARP cache?
• Which Layer 2 device uses MAC address learning to forward frames to the correct port?
• Which command displays the internet protocol configuration for network interfaces?
• Which layer is described as encrypting a command as it is sent and decrypting when received by the server?
• Multimode fiber cables are wider in diameter due to light modes and are effective over medium distances. They are generally used within LANs because they can be paired with LEDs and lower-cost light sources. Which statement best describes multimode fiber?
• What happens to the DNS resolution result after a query?
• Which layer establishes the connection between a client and server and maintains it during use of the website?
• Define a subnet mask and its role in IPv4 networking.
• Which Layer 1 device strengthens, replicates, or regenerates signals that are weakened during transmission?
• Which file transfer protocol uses UDP and is intended for simple transfers on local networks?
• Which layer handles IP addressing, routing, and packet forwarding across multiple networks?
• What is a major advantage of IPv6 over IPv4?
• What is the purpose of routing protocols like OSPF or RIP?
• Which layer handles the addition of IP addresses to each packet and governs routing across networks toward the destination server?
• In the OSI to TCP/IP model mapping, which OSI layer corresponds to the Internet layer in TCP/IP?
• Which command is described as a name server lookup utility?
• Which type of cable transfers data using light and is used in fiber-optic networks?
• Which layer hosts protocols such as HTTP, HTTPS, SSH, and NTP?
• Multimode fiber is generally less expensive because it can use LEDs and other lower-cost light sources. Which statement best reflects this?
• How do bandwidth and throughput differ?
• Which category is made up of four twisted pairs and supports 1 Gbps for up to 100 meters or 10 Gbps for up to 55 meters?
• Which protocol is used to map IP addresses to MAC addresses within a local network?
• What does the subnet mask reveal about an IPv4 address?
• At what layer does Ethernet operate and what are common LAN speeds?
• What is the primary purpose of load balancing in a network?
• Analog copper cables engineered with a metal shield to block signal interference are called what?
• Why is DNS caching important?
• What term describes a network similar to a LAN but spanning a large geographic area?
• What device is necessary for sending and receiving data over analog lines such as phone or cable lines?
• Which command is commonly used to view DNS information and resolve domain names to IP addresses?
• Which category cable supports 16 Mbps for up to 100 meters and is rarely used today?
• Which network type is designed to be wireless and used for guest access in small businesses?
• Which network type is typically used for connecting devices within a single building?
• Which network type connects devices over a wide geographical area, such as a country or region?
• Which Layer 1 device regenerates signals to extend transmission distance by maintaining signal integrity?
• Which of the following best describes multiplexing in transport protocols?
• Which cloud service model provides a platform to deploy applications and may include a database engine, with the cloud provider handling the underlying infrastructure?
• These cables are created when pairs of wires are twisted around each other to protect and cancel out interference from each other and outside sources?
• Which device forwards frames based on MAC addresses at the data link layer?
• Which category doubles the number of twisted pairs to four for up to 1 Gbps over 100 meters?
• Which acronym corresponds to a network that connects multiple LANs over a campus?
• Which network model typically includes a central server coordinating data and providing resources to clients?
• What ports are used by HTTP and HTTPS?
• Which network type is primarily wireless and local to a limited area?
• Which protocol maps IP addresses to MAC addresses on a local network?
• Which device commonly runs routing protocols to discover network paths?
• Which cable type is mostly used by cable TV companies to connect customers to the provider's facilities?
• What does CSMA/CD stand for, and is it relevant in modern networks?
• Supports up to 10 Mbps (Megabits per second) for up to 100 meters and is commonly used for phone lines today?
• What is ICMP used for?
• What happens when a DHCP lease expires?
• Which device provides a point of connection between two or more networks and forwards packets between networks?
• Which sequence correctly represents the order of DNS servers consulted by a resolver?
• In IPv6, what feature allows devices to configure their own addresses without a DHCP server?
• Which DNS record creates an alias for another domain name?
• Which layer receives the packets and adds MAC addresses to create a frame?
• Which device makes forwarding decisions based on logical network addresses?
• Which protocol resolves domain names to IP addresses on the Internet?
• What is the primary use of the ping utility?
• Which cloud service model provides software as a service that you access over the internet with no installation?
• Which TCP/IP layer is responsible for end-to-end transport of data and includes TCP and UDP?
• Which devices are commonly associated with the Data Link Layer?
• Which tool provides information for DNS problems and helps map names to IP addresses?
• Which Layer 1 device broadcasts data from a single point to all devices on the network without filtering?
• Which device primarily forwards packets between networks by evaluating IP addresses?
• Why is a default route important in a routing table?
• Which network scanner is used to identify hosts and open ports for security assessment?
• Which command is associated with displaying network statistics?
• What is port forwarding and when is it used?
• What is a VPN and how does it maintain security?
• On Linux systems, which command is commonly used to trace the route to a destination?
• In routing, what does the destination 0.0.0.0 typically represent?
• What is the function of a default gateway?
• 802.11i relates to which security standard, and which is commonly used today?
• Which term describes networking across a metropolitan area?
• This end connector is used with Ethernet cables and supports four pairs (eight wires)?
• Which layer is described as receiving frames and data and sending them via the local media to switches and routers, with microsecond processing?
• Which Linux utility is designed to show the path a packet takes and can be used by non-superuser accounts, acting similarly to traceroute?
• With a /24 subnet mask, how many host bits are available for devices on the same network?
• Which protocols belong to the TCP/IP Network Layer?
• Which command is used to display the host's routing table and can also modify routes?
• Which layer is associated with providing services to the application layer and receiving services from the network layer?
• Which network function is associated with error detection and flow control in the Transport layer?
• What is the role of a DNS resolver?
• Which type of fiber optic cable carries higher bandwidth over hundreds or thousands of kilometers and typically requires more expensive electronics to generate light?
• Why are single-mode fibers typically used for long-distance high-bandwidth links?
• Which statement correctly describes SNAT and DNAT?
• Which network type connects multiple LANs over a larger area than a campus but smaller than a country?
• FTPS relies on encryption provided by which security protocol?
• Which file transfer protocol is typically unencrypted and contrasts with encrypted alternatives like FTPS?
• A hypervisor that relies on a host operating system to provide virtualization services is known as which type?
• Which statement best describes TCP and UDP?
• Which network model has no individually designated server or client, with each machine able to act as both?
• How does SLAAC work in IPv6?
• How many layers are in the OSI model?
• In DNS name resolution, which sequence describes the path from client to authoritative servers via a recursive resolver?
• What is the purpose of the TCP three-way handshake?
• Which OSI layer handles the transmission of data between hosts in different networks and routing?
• Which term describes a network centered around a person and their devices?
• A campus area network connects multiple LANs across a limited area, such as a university campus. Which acronym represents this type?
• Which cloud service model allows consumers to store and publish information without needing to manage the underlying applications or infrastructure?
• Which command shows information about active ports and their state across Windows, macOS, and Linux?
• Which protocol is unencrypted and often used for remote access?
• Which cloud model would you choose to deploy your own applications while the provider manages the platform and infrastructure?
• Which category is described as most commonly used in wired networks today?
• Which layer is responsible for maintaining and terminating communication sessions, i.e., session state management?
• Which command displays the current routing table and can add or remove routes?
• Which acronym stands for a campus area network?
• What does DHCP stand for?
• Which layer performs segmentation into data units around 1500 bytes and reassembles them at the destination?
• Which cloud service model provides foundational infrastructure such as virtual servers and storage?
• Which category is described as an improvement over Cat6, with higher interference resistance and capable of 10 Gbps up to 100 meters?
• Which type uses glass or plastic threads to transfer data using light instead of electricity?
• Which command shows the IP address, subnet mask, and default gateway for each network adapter and can display MAC address and DHCP lease information with the /all option?
• Which statement best describes IPv4 and IPv6 addressing basics?
• Which type of cable is typically used for home television service connections?
• Which description best distinguishes stateless and stateful firewall filtering?
• How do routers and switches differ in function and OSI layer?
• Which cloud service model delivers software applications over the internet, allowing users to store and publish information without managing the underlying applications or infrastructure?
• What does anycast addressing do?
• Which OSI layer is most closely associated with end-user communication protocols and services?
• In the OSI model, at which layer does a router primarily operate to forward packets between networks?
• In the TCP/IP model, which layer is responsible for routing data between networks?
• On Windows systems, which command is used to trace the route to a destination?
• Which command is a replacement for nslookup and is used for name server lookups?
• What is the difference between static and dynamic routing?
• Which layer translates data from the application layer into the format required to transmit the data and handles encryption if used?
• The seven-layer architecture used to organize data transfer in networks is called which model?
• Which tool is a protocol analyzer commonly used to capture and inspect network packets?
• Which term is used for networking that covers a metropolitan area?
• Which command securely copies files between two hosts over SSH?
• What is the primary role of a firewall in a network?
• What does a DNS zone file contain?
• Which remote management protocol provides encrypted communication, preferred over unencrypted alternatives?
• A network that provides access to storage devices specifically is known as?
• Bare-metal hypervisors are commonly referred to as which type?
• Which DNS records map a domain to an IP address?
• Which tool is commonly used to look up domain ownership, including contact details, though privacy options may hide information?
• What is the primary purpose of Spanning Tree Protocol (STP) in Layer 2 networks?
• What is 802.1Q tagging used for?
• Which category is described as having the ability to run 10 Gbps over 100 meters maximum?
• Which utility displays information about a user on a remote system, including last log-in time and username, and is commonly used in Linux?
• Which term represents the top layer of the OSI model, focusing on application-level communications?
• Which tool is primarily used in Linux to look up who owns a domain or IP block?
• Which file transfer protocol transfers a file using UDP instead of TCP and is typically used on local networks?
• Which statement describes a simplification of IPv6 addressing compared to IPv4?
• Which layer adds the source and destination MAC addresses to data and forms frames?
• Which OSI layer is responsible for the error-free delivery of data and uses switches and bridges?
• What does NAT traversal (NAT-T) accomplish for VPNs?
• Which protocols are commonly used for file sharing and for web traffic?
• Which service resolves human-readable hostnames to IP addresses?
• What Windows command is the counterpart to traceroute for showing the path that packets take?
• Which statement correctly differentiates a broadcast domain from a collision domain?
• How many layers are in the TCP/IP model, and what are they called?
• Which OSI layer is responsible for connection establishment, session maintenance, and authentication?
• In networking, what is a port and what is its primary purpose?
• Which statement best describes NAT's purpose?
• Which Layer 2 device is used to connect devices in a specific network and allows them to communicate efficiently within the network?
• Which transport-layer protocols are used in TCP/IP?
• What does CIDR notation mean, and what does /24 signify?
• What does STP do when a redundant path is detected?
• Which Layer 2 device connects two or more networks but forwards data to the next network without analysis?
• Which layer is described as translating data from the application into a transmittable format and performing encryption if used?
• What does MTU stand for and why is it important?
• What is Quality of Service (QoS) and why is it used?
• Which network type provides networking across a larger area than a CAN, but smaller than a WAN?
• Which topology is described as a hub-and-spoke arrangement where some sites connect directly to each other?
• Which term refers to a network centered around a person and their devices?
• Which network device operates at the network layer to route packets between networks using IP addresses?
• Which TCP/IP layer defines how data should be physically sent through the network?
• What is the primary function of the Transport layer in the OSI model?
• What information does the traceroute utility reveal?
• Which OSI layer is responsible for the physical connections of the devices in the network (hubs, repeaters, modems, cabling)?
• Which topology describes a configuration where every site is connected to every other site directly?
• What term describes a network consisting of computers connected within a limited area?
• Which layer is responsible for network applications (such as HTTP or FTP) and their production of data to be transferred over the network?
• Which statement best describes the difference between DHCP and SLAAC in IP addressing?
• Which command traces the route an IP packet takes to a destination and lists each hop with the hop's IP address and round-trip time?
• Which command helps determine where a ping fails by showing the route to the destination?
• WLAN stands for which of the following?
• Which Layer 1 device takes the data packets from the router, and sends them to all the devices connected on the network?
• What is the role of an Autonomous System Number (ASN) in Internet routing?
• Which OSI layer provides reliable data delivery, segments and reassembles data for transmission, and is often called the heart of the OSI model?
• In IPv6, who is responsible for fragmentation?
• What is a VLAN and why is it used in networks?
• In IPv4, what allows fragmentation to occur if a packet is larger than the path MTU?
• Which tool displays TCP/IP packets and other network packets being transmitted for troubleshooting, acting as a protocol analyzer?