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15 questions with answer explanations. Choose an answer below to begin.
Which cable type is most suitable for a 10 Gbps link spanning 55 meters in a commercial office?
1.2 Compare and contrast different types of connectors, cabling, and their purposes
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A Linux network emulator for exploring hosts, switches, links, and packet flow. It teaches networking concepts but does not emulate Cisco IOS.
Try it: Follow the project's installation guide in a lab VM. Build a small topology, predict host reachability, test it, and sketch the path a packet takes when you change a link.
Open-source software; requires a compatible Linux environment or VM.
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Prefer to read at your own pace? Work through each question below, then open its answer to check your reasoning. You can link directly to a question or print this reference.
Which cable type is most suitable for a 10 Gbps link spanning 55 meters in a commercial office?
Cat6a UTP
Cat5e UTP
Single-mode fiber
Coaxial cable
Correct answer
Cat6a UTP
Cat6a supports 10 Gbps up to 100 meters, making it ideal for this distance. Cat5e is not rated for 10 Gbps, while fiber is typically used for longer runs and coaxial is uncommon for modern Ethernet.
Which IPv6 address type is used for communication to all nodes on a local network segment?
Multicast
Anycast
Unicast
Broadcast
Correct answer
Multicast
IPv6 multicast addresses are used to deliver packets to multiple interfaces on a local segment. Anycast targets the nearest of a group, unicast targets a single address, and broadcast does not exist in IPv6.
What is the primary purpose of a default gateway on a host device?
To forward traffic to remote networks
To provide name resolution
To assign IP addresses
To encrypt outgoing traffic
Correct answer
To forward traffic to remote networks
The default gateway serves as the exit point for traffic destined to networks outside the local subnet. Name resolution and IP assignment are handled by DNS and DHCP, not the gateway.
Which network device operates at Layer 2 and can create separate collision domains for each port?
Switch
Hub
Router
Repeater
Correct answer
Switch
A switch operates at Layer 2 and uses MAC addresses to forward frames, providing dedicated collision domains per port. Hubs operate at Layer 1 and create a single collision domain, while routers operate at Layer 3.
Which protocol is commonly used for secure remote administration of network devices?
SSH
Telnet
FTP
HTTP
Correct answer
SSH
SSH provides encrypted remote access, protecting credentials and data. Telnet transmits data in clear text, while FTP and HTTP are not designed for secure device administration.
What does a network ACL primarily control?
Traffic based on IP and port
Physical cable connections
User authentication
Data encryption
Correct answer
Traffic based on IP and port
Access Control Lists filter traffic based on Layer 3 and Layer 4 information such as IP addresses and port numbers. They do not manage physical connections, authentication, or encryption directly.
Which wireless standard supports both 2.4 GHz and 5 GHz bands and offers the highest throughput?
802.11ac
802.11n
802.11g
802.11b
Correct answer
802.11n
802.11n operates on both 2.4 GHz and 5 GHz bands and provides significantly higher throughput than 802.11g and 802.11b. 802.11ac operates only in the 5 GHz band.
What is the purpose of network address translation (NAT)?
To conserve public IPv4 addresses
To encrypt data packets
To assign IP addresses dynamically
To filter malicious traffic
Correct answer
To conserve public IPv4 addresses
NAT allows multiple private IP addresses to share a single public IP address, conserving IPv4 space. Encryption, dynamic assignment, and traffic filtering are handled by other technologies.
Which tool is used to test cable connectivity and identify wiring faults?
Cable tester
Multimeter
Toner probe
Packet sniffer
Correct answer
Cable tester
A cable tester verifies proper pinout and continuity for network cables. A multimeter measures electrical properties, a toner probe traces wires, and a packet sniffer analyzes traffic.
What does a subnet mask define in an IPv4 network?
The network portion of an IP address
The physical location of a device
The speed of the network link
The type of cable used
Correct answer
The network portion of an IP address
A subnet mask separates the network and host portions of an IPv4 address, enabling routers to determine the network segment. It does not define physical location, speed, or cable type.
Which network topology requires a central controller to manage access to the medium?
Star
Ring
Bus
Mesh
Correct answer
Ring
In a ring topology, devices pass data around the ring, and a central controller or token mechanism is often used to manage access. Star topologies use a central switch, but do not require a controller for medium access in the same way.
What is the purpose of a network diagram?
To visualize device connections and layout
To configure firewall rules
To measure network speed
To assign IP addresses
Correct answer
To visualize device connections and layout
Network diagrams illustrate how devices are interconnected, helping with planning, documentation, and troubleshooting. Configuration, performance measurement, and IP assignment are handled by other tools and processes.
Which protocol is used to automatically assign IP addresses to devices?
DHCP
DNS
ARP
ICMP
Correct answer
DHCP
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses and other network parameters to devices. DNS resolves names to IPs, ARP maps IPs to MAC addresses, and ICMP is used for diagnostics.
What does the term 'latency' refer to in networking?
The delay before data transfer begins
The maximum data transfer rate
The number of connected devices
The physical distance between devices
Correct answer
The delay before data transfer begins
Latency is the time it takes for a packet to travel from source to destination. Throughput measures data rate, device count is unrelated, and physical distance does not define latency by itself.
Which network device can segment broadcast domains?
Router
Switch
Hub
Access point
Correct answer
Router
Routers operate at Layer 3 and separate broadcast domains by default. Switches and access points operate at Layer 2 and do not segment broadcast domains, while hubs simply repeat signals.
Recall the answer before opening each card.
Cat6a UTP. It supports 10 Gbps up to 100 meters, while Cat6 supports only up to 55 meters for 10 Gbps.
Multicast. IPv6 multicast addresses are used for one-to-many communication on a local segment.
To forward traffic to remote networks outside the local subnet. It serves as the exit point for inter-network communication.
A switch. It uses MAC addresses to forward frames and provides dedicated bandwidth per port, reducing collisions.
SSH (Secure Shell). It encrypts all traffic, protecting credentials and data from eavesdropping.
IP addresses and port numbers. ACLs operate at Layer 3 and Layer 4 to permit or deny traffic.
802.11n. It operates on both bands and offers higher throughput than 802.11g/b; 802.11ac is 5 GHz only.
To conserve public IPv4 addresses by allowing multiple private IPs to share a single public IP.
A cable tester. It verifies proper wiring and identifies faults like opens or shorts.
The network portion from the host portion. It enables routers to determine the network segment.
Ring topology. Devices pass a token or the controller grants permission to transmit to avoid collisions.
To visualize device connections and layout, aiding in planning, documentation, and troubleshooting.
DHCP (Dynamic Host Configuration Protocol). It assigns IP addresses, subnet masks, default gateways, and DNS servers.
The delay before data transfer begins, i.e., the time for a packet to travel from source to destination.
A router. It operates at Layer 3 and stops broadcast propagation, separating broadcast domains.
100 meters. Cat6a is rated for 10 Gbps up to 100 meters, unlike Cat6 which is limited to 55 meters.
A hub creates a single collision domain for all ports; a switch creates a separate collision domain per port.
Unicast. IPv6 unicast addresses identify a single interface. Multicast and anycast have different formats.
SFTP (SSH File Transfer Protocol) or SCP. They use SSH for encryption. FTP is unencrypted.
A toner probe. It generates a tone on the wire, and the probe identifies the corresponding cable at the far end.
Read the prompt, commit to an answer, then flip the card. Move through the deck at your own pace and repeat any topic that does not come back quickly.
Card 1 of 20
1 reviewed this session
Connect the concepts
Open a branch to connect a topic with its practice questions and explanations. Use the map to choose your next review topic.
This is an analysis of the practice bank, not a claim about the vendor's live exam blueprint. Use it to identify the knowledge, judgment, and recall patterns exercised here, then verify your coverage against the current official exam guide.
This section covers cable types, connectors, and physical topologies as per objective 1.2 and 1.3. The practice bank tests knowledge of choosing Cat6a UTP for 10 Gbps up to 55 meters, understanding that Cat5e cannot support 10 Gbps and fiber is for longer runs. It also covers coaxial being uncommon for modern Ethernet. Additionally, cable testers are used to verify connectivity and wiring faults (objective 6.2). Ring topology requires a central controller for medium access, contrasting with star topology which uses a central switch.
This section addresses IP addressing concepts from objectives 2.1, 2.2, and 2.4. Practice items include IPv6 multicast addresses for one-to-many local segment communication, while anycast targets the nearest of a group and unicast is one-to-one. Subnet masks define the network portion of an IPv4 address, enabling routers to determine the network segment. NAT conserves public IPv4 addresses by allowing multiple private addresses to share a single public IP. DHCP automatically assigns IP addresses and other parameters.
This section covers network services (objective 2.3) and security protocols (6.1, 6.3). The default gateway forwards traffic to remote networks outside the local subnet; it is not for name resolution or IP assignment. SSH provides encrypted remote administration, unlike Telnet which sends data in clear text. ACLs filter traffic based on IP addresses and port numbers, controlling access at Layers 3 and 4. These protocols are essential for secure and efficient network operation.
This section examines device functions (objective 1.1) and performance factors (1.5, 5.2). A switch operates at Layer 2 creating separate collision domains per port; a router operates at Layer 3 segmenting broadcast domains. Wireless standard 802.11n supports both 2.4 GHz and 5 GHz bands with higher throughput than 802.11g/b; 802.11ac is 5 GHz only. Latency measures delay in data transfer, distinct from throughput. Network diagrams visualize device connections for planning and troubleshooting.
Study workflow
Memorize the distance and speed capabilities of common copper cables: Cat5e (1 Gbps, 100m), Cat6 (10 Gbps, 55m), Cat6a (10 Gbps, 100m). Understand when to choose fiber for longer runs. Practice relating cable type to application scenarios in the practice bank.
Learn the three main IPv6 address types: unicast (one-to-one), multicast (one-to-many on local segment), and anycast (one-to-nearest). Remember that IPv6 has no broadcast. Use flashcards to differentiate these and recall their purposes.
Review the OSI model layers: hubs (Layer 1), switches (Layer 2, separate collision domains), routers (Layer 3, separate broadcast domains). Understand that default gateways are routers enabling communication outside the local subnet. Test yourself with device function questions.
Be able to determine network and host portions using subnet masks. Understand NAT conserves public IPs by translating private addresses. Use practice problems to calculate subnet IDs and apply NAT concepts. Review DHCP for automatic assignment.
Know that SSH is the secure alternative to Telnet for remote administration. ACLs filter traffic based on IP/port. Cable testers verify physical connectivity; packet sniffers analyze traffic. Create comparison tables to reinforce differences.
FAQ
Clear boundaries on what the bank covers, how to use it, and where official vendor information still matters.
Cat6a supports 10 Gbps up to 100 meters due to better crosstalk and attenuation specifications. Cat6 is only rated for 10 Gbps up to 55 meters. For runs under 55 meters, Cat6 can also work, but Cat6a provides more headroom and is the safer choice for that distance.
IPv6 multicast sends packets to all interfaces subscribed to the multicast group on a local segment. Anycast sends packets to the nearest interface in a group (based on routing metrics). Multicast is one-to-many, anycast is one-to-nearest.
No, switches operate at Layer 2 and only separate collision domains, not broadcast domains. All ports on a switch belong to the same broadcast domain unless VLANs are configured. Routers (Layer 3) are needed to separate broadcast domains.
SSH encrypts all traffic, including passwords and configuration commands, preventing eavesdropping. Telnet sends data in clear text, making it vulnerable to interception. For secure remote administration, SSH is the standard.
ACLs control traffic based on Layer 3 (IP addresses) and Layer 4 (port numbers) information. They do not manage physical connections, authenticate users, or encrypt data. Encryption is handled by protocols like IPsec, and authentication by AAA services.
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