WorksheetsNetworking Protocols Quiz
Total questions: 24
Worksheet time: 12mins
Which statement best defines a networking protocol?
A physical cable type
A set of rules that standardize communication between systems
A software update package
A cloud storage service
Why do multiple protocols often coexist in a network?
To replace each other constantly
To work at different layers and complement functions
To make troubleshooting harder
To avoid headers
In a layered model, each layer communicates directly with:
All layers
Only the layer above and below
Only hardware
Only the user
What enforces strict boundaries between adjacent layers?
VLAN table
Interface/Service access points
Firewall rules
File permissions
Which three layers are “occupied” by TCP/IP suite?
Physical, Data Link, Network
Application, Transport, Network (Internet)
Data Link, Transport, Application
Physical, Network, Application
Which layer picks routes across interconnected networks?
Application
Transport
Network (IP)
Data Link
TCP is “connection-oriented” because it:
Never uses headers
Establishes a logical connection and awaits ACKs
Only sends one big packet
Works at the physical layer
Which two header fields help deliver data to the correct app and in order?
Port number and sequence number
VLAN and TTL
MAC and FCS
Window size and CRC
IP is called “connectionless” because it:
Confirms delivery to apps
Keeps state per flow
Does not confirm delivery nor track content
Works only on LANs
Where are source and destination IP addresses added?
Transport header
IP header
Ethernet trailer
Application payload
A switch operates primarily at which layer?
Physical
Data Link
Network
Transport
The key difference between a switch and a router is that a switch:
Makes IP routing decisions
Forwards frames without network-layer routing
Uses BGP
Translates DNS
The physical layer defines:
App APIs
TCP ports
Electrical/mechanical specs for transmission
HTTP verbs
Which statement fits the physical layer?
Manages IP addressing
Defines line coding and connectors
Tracks TCP ACKs
Hosts DNS
Which sublayer builds frames and handles addresses/collisions?
LLC
MAC
PCS
PMA
LLC primarily:
Encodes signals on the wire
Interfaces with Network layer and manages link control
Assigns IPs
Sets VLAN trunking
HTTP is best described as:
A file system format
A transaction-oriented client–server protocol
A LAN switching method
A physical connector
Which line ending marks the end of a start-line/headers in HTTP?
EOF
CRLF
TAB
NULL
SMTP is mainly used today for:
Client inbox retrieval
Server-to-server mail transfer
Spam filtering
Attachments compression
POP3 is a _____ protocol.
Push
Pull
Routing
Switching
FTP splits communication into:
Signaling and ARP
Control and data channels
DNS and DHCP
CRC and parity
Why was FTP needed across different OS file systems?
To format disks
To standardize file transfer semantics
To compress images
To route IP packets
In P2P file sharing, a peer acts as:
Only a client
Only a server
Both client and server (seed/leecher)
Neither
How do peers discover others with the same content?
IP broadcast
Central DHCP
Trackers or DHT
SMTP
