Quizzes – EduHub

Question 1

Which OSI layer is responsible for the logical addressing (IP addresses) used in routing packets across networks?

Layer 3 - Network Layer Layer 7 - Application Layer Layer 2 - Data Link Layer Layer 4 - Transport Layer

Question 2

What is the primary function of a router in a network?

To connect devices within the same local network segment (LAN). To establish a wireless connection for client devices. To forward data packets between different IP networks. To provide power to network devices.

Question 3

Which of the following is a private IP address range as defined by RFC 1918?

8.8.8.8 172.217.160.142 192.168.1.1 10.100.50.1

Question 4

What does the acronym VLAN stand for?

Very Large Area Network Vastly Integrated Local Area Network Virtual Link Access Network Virtual Local Area Network

Question 5

Which protocol is used to automatically assign IP addresses to devices on a network?

SNMP ARP DHCP DNS

Question 6

What is the default subnet mask for a Class C IP address?

255.255.255.240 255.255.0.0 255.0.0.0 255.255.255.0

Question 7

Which command is commonly used to troubleshoot basic IP connectivity and check if a host is reachable?

ipconfig /all traceroute ping netstat

Question 8

What is the purpose of the ARP protocol?

To translate domain names to IP addresses. To resolve a MAC address from an IP address. To assign IP addresses automatically. To resolve an IP address from a MAC address.

Question 9

Which layer of the OSI model handles end-to-end communication and reliability using protocols like TCP and UDP?

Presentation Layer Data Link Layer Transport Layer Session Layer

Question 10

What is a default gateway?

A router that allows devices on a local network to communicate with devices on other networks. The IP address of the DNS server. A virtual private network connection. The first IP address in a subnet.

Question 11

Which command is used on Cisco IOS devices to view the current router configuration?

debug ip packet show ip interface brief show startup-config show running-config

Question 12

What is the primary function of a switch?

To connect different IP subnets. To provide wireless access. To forward traffic based on MAC addresses within a single network segment. To filter traffic based on IP addresses.

Question 13

Which protocol is used for name resolution, converting domain names to IP addresses?

DNS FTP SMTP HTTP

Question 14

What is the purpose of NAT (Network Address Translation)?

To segment a network into multiple VLANs. To map private IP addresses to public IP addresses, conserving public IPv4 addresses. To automatically assign IP addresses. To encrypt all network traffic.

Question 15

Which layer of the OSI model is responsible for physical transmission of bits over the medium?

Network Layer Transport Layer Data Link Layer Physical Layer

Question 16

What is the difference between TCP and UDP?

UDP provides flow control, TCP does not. TCP is connectionless and unreliable; UDP is connection-oriented and reliable. TCP operates at Layer 3, UDP at Layer 4. TCP is connection-oriented and reliable; UDP is connectionless and unreliable.

Question 17

What is a subnet?

A single network segment. A division of a larger IP network into smaller, manageable networks. A protocol used for routing. A type of wireless access point.

Question 18

Which protocol is responsible for finding the MAC address associated with an IP address on the local network?

ARP ICMP RARP DHCP

Question 19

What is the purpose of a firewall?

To provide wireless connectivity. To translate IP addresses. To increase network speed. To monitor and control incoming and outgoing network traffic based on security rules.

Question 20

Which command is used to view the routing table on a router?

show ip route show arp show protocols show interfaces

Question 21

What is the function of the Transport Layer (Layer 4) in the OSI model?

Logical addressing and routing. How applications interact with the network. Physical transmission of data bits. End-to-end communication services, including reliable data transfer and flow control.