Computer Networking MCQs

51. Which layer is responsible for end-to-end communication?
A. Network
B. Transport
C. Session
D. Data Link
Answer: B
What does UDP stand for?
A. User Data Protocol
B. Universal Data Protocol
C. User Datagram Protocol
D. Unified Datagram Protocol
Answer: C
Which protocol uses port 443?
A. HTTP
B. HTTPS
C. FTP
D. SMTP
Answer: B
What is a packet?
A. Large data unit
B. Small data unit
C. Storage device
D. Network cable
Answer: B
Which protocol resolves IP to MAC?
A. DNS
B. ARP
C. DHCP
D. FTP
Answer: B
What is a NIC?
A. Network Interface Card
B. Network Internet Cable
C. New Interface Card
D. Network Internal Card
Answer: A
Which network type is personal?
A. LAN
B. WAN
C. PAN
D. MAN
Answer: C
What is the full form of MAN?
A. Main Area Network
B. Metropolitan Area Network
C. Medium Area Network
D. Multiple Area Network
Answer: B
Which protocol is used for domain name resolution?
A. FTP
B. DNS
C. HTTP
D. SMTP
Answer: B
What is throughput?
A. Data speed
B. Actual data transfer rate
C. Storage capacity
D. CPU speed
Answer: B
Which device filters by IP address?
A. Switch
B. Router
C. Hub
D. Repeater
Answer: B
What is a bridge used for?
A. Connect networks
B. Divide network segments
C. Amplify signal
D. Encrypt data
Answer: B
Which topology is easiest to install?
A. Mesh
B. Bus
C. Star
D. Ring
Answer: B
Which protocol is used for downloading web pages?
A. SMTP
B. HTTP
C. FTP
D. SNMP
Answer: B
What is a subnet mask used for?
A. Hide IP
B. Divide network
C. Increase speed
D. Encrypt data
Answer: B
Which device connects wireless devices?
A. Router
B. Access Point
C. Hub
D. Bridge
Answer: B
What is SSID?
A. Network name
B. Password
C. IP address
D. Protocol
Answer: A
Which protocol provides secure remote login?
A. Telnet
B. SSH
C. FTP
D. HTTP
Answer: B
What is IPv6 address length?
A. 32 bits
B. 64 bits
C. 128 bits
D. 256 bits
Answer: C
What is IPv4 address length?
A. 16 bits
B. 32 bits
C. 64 bits
D. 128 bits
Answer: B
Which layer handles data formatting?
A. Session
B. Presentation
C. Transport
D. Network
Answer: B
Which protocol is used for streaming?
A. FTP
B. RTP
C. SMTP
D. HTTP
Answer: B
What is collision in networking?
A. Data loss
B. Data overlap
C. Data encryption
D. Data routing
Answer: B
Which topology has no central device?
A. Star
B. Bus
C. Mesh
D. Tree
Answer: B
Which device forwards data based on IP?
A. Hub
B. Switch
C. Router
D. Bridge
Answer: C
What is full duplex?
A. One-way communication
B. Two-way simultaneous communication
C. Half communication
D. Slow communication
Answer: B
Which protocol is used for email receiving?
A. SMTP
B. POP3
C. FTP
D. HTTP
Answer: B
What is network congestion?
A. High speed
B. Traffic overload
C. Low bandwidth
D. Signal loss
Answer: B
Which layer handles session management?
A. Session
B. Transport
C. Network
D. Physical
Answer: A
What is a backbone network?
A. Main network
B. Small network
C. Private network
D. Wireless network
Answer: A
Which device repeats signal?
A. Router
B. Switch
C. Repeater
D. Bridge
Answer: C
What is DNS cache?
A. Storage of IP mappings
B. Storage of files
C. Storage of passwords
D. Storage of emails
Answer: A
Which protocol is used in VoIP?
A. SIP
B. FTP
C. SMTP
D. HTTP
Answer: A
What is NAT?
A. Network Address Translation
B. Network Access Tool
C. New Address Type
D. Network Allocation Table
Answer: A
Which cable type is fastest?
A. Twisted pair
B. Coaxial
C. Fiber optic
D. USB
Answer: C
What is a port number?
A. Device ID
B. Process identifier
C. Network ID
D. IP address
Answer: B
Which protocol is stateless?
A. HTTP
B. TCP
C. FTP
D. SMTP
Answer: A
What is a proxy server?
A. Storage device
B. Intermediate server
C. Router
D. Switch
Answer: B
Which topology is expensive?
A. Bus
B. Star
C. Mesh
D. Ring
Answer: C
What is packet loss?
A. Lost data packets
B. Extra packets
C. Stored packets
D. Encrypted packets
Answer: A
Which protocol uses port 21?
A. HTTP
B. FTP
C. SMTP
D. DNS
Answer: B
What is QoS?
A. Quality of Service
B. Quantity of Signal
C. Queue of Service
D. Quality of Speed
Answer: A
Which protocol is used for chat?
A. IRC
B. FTP
C. SMTP
D. SNMP
Answer: A
What is network topology?
A. Network speed
B. Network design
C. Network size
D. Network cable
Answer: B
Which protocol uses port 25?
A. SMTP
B. FTP
C. HTTP
D. DNS
Answer: A
What is broadcast address?
A. Send to all
B. Send to one
C. Send to router
D. Send to switch
Answer: A
Which protocol is used for file sharing?
A. SMB
B. SMTP
C. HTTP
D. SNMP
Answer: A
What is network interface?
A. Hardware connection
B. Software
C. Protocol
D. Address
Answer: A
Which protocol uses port 53?
A. HTTP
B. DNS
C. FTP
D. SMTP
Answer: B
100. What is encryption?
A. Data compression
B. Data protection
C. Data routing
D. Data storage
Answer: B