#1
What is the primary function of a router in a network?
To forward data packets between computer networks
ExplanationData packet forwarding between networks.
#2
What does TCP stand for in computer networking?
Transmission Control Protocol
ExplanationTransmission Control Protocol.
#3
Which protocol is commonly used for secure communication over a network?
SSH
ExplanationCommonly used for secure communication.
#4
What is the purpose of DNS (Domain Name System) in computer networks?
To convert domain names into IP addresses
ExplanationConverts domain names to IP addresses.
#5
Which networking device operates at Layer 2 of the OSI model?
Switch
ExplanationOperates at Layer 2.
#6
What is the purpose of a DNS server in networking?
To convert domain names to IP addresses
ExplanationResolves domain names to IP addresses.
#7
Which network topology connects each device to a central hub or switch?
Star topology
ExplanationCentral hub/switch connects devices.
#8
Which of the following devices operates at the Physical layer of the OSI model?
Repeater
ExplanationOperates at the Physical layer.
#9
Which of the following is NOT a valid IPv4 address?
192.168.0.256
ExplanationInvalid IPv4 address format.
#10
What is the main advantage of using a star topology in networking?
It offers high scalability and easy expansion
ExplanationHigh scalability and easy expansion.
#11
What is the maximum data rate of a Gigabit Ethernet connection?
1 Gbps
ExplanationMaximum data rate of Gigabit Ethernet.
#12
Which layer of the OSI model is responsible for establishing, maintaining, and terminating connections?
Session Layer
ExplanationHandles connection setup, maintenance, and termination.
#13
Which of the following protocols is used for securely accessing remote systems over a network?
SSH
ExplanationUsed for secure remote access.
#14
What is the maximum data rate of the 802.11ac Wi-Fi standard?
3.5 Gbps
ExplanationMaximum data rate of 802.11ac Wi-Fi.
#15
What is the purpose of a subnet mask in networking?
To determine the network portion of an IP address
ExplanationIdentifies network portion of an IP address.
#16
Which of the following is a characteristic of a full-duplex communication?
Data can be transmitted in both directions simultaneously
ExplanationSimultaneous bidirectional data transmission.
#17
Which of the following is NOT a valid MAC address format?
001A:2B:3C:4D:5E
ExplanationInvalid MAC address format.
#18
What does ICMP (Internet Control Message Protocol) primarily deal with in networking?
Error and control messages
ExplanationHandles error and control messages.