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

Question 2

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

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

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

Question 5

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

ARP DNS SNMP DHCP

Question 6

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

255.0.0.0 255.255.255.240 255.255.0.0 255.255.255.0

Question 7

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

ping netstat traceroute ipconfig /all

Question 8

What is the purpose of the ARP protocol?

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

Question 9

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

Presentation Layer Session Layer Transport Layer Data Link Layer

Question 10

What is a default gateway?

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

Question 11

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

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

Question 12

What is the primary function of a switch?

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

Question 13

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

HTTP FTP SMTP DNS

Question 14

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

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

Question 15

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

Physical Layer Transport Layer Network Layer Data Link 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 is connection-oriented and reliable; UDP is connectionless and unreliable. TCP operates at Layer 3, UDP at Layer 4.

Question 17

What is a subnet?

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

Question 18

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

DHCP ARP RARP ICMP

Question 19

What is the purpose of a firewall?

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

Question 20

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

show protocols show ip route show arp show interfaces

Question 21

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

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