Computer Networks & Security Flashcards
6 cards from real B.S.W.E. Bachelor of Software Engineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Computer Networks & Security flashcards as text
What does the OSI model stand for?
Answer: Open Systems Interconnection
The Open Systems Interconnection (OSI) model is a conceptual framework with seven layers that standardizes how different network systems communicate.
Which transport layer protocol provides reliable, ordered, and error-checked delivery of data?
Answer: TCP
TCP (Transmission Control Protocol) establishes a connection and guarantees reliable, ordered data delivery with flow control and error checking.
What is the purpose of DNS (Domain Name System)?
Answer: To translate human-readable domain names into IP addresses
DNS acts as the internet's phone book, translating domain names like www.example.com into the IP addresses computers use to communicate.
What is a subnet mask used for?
Answer: Dividing an IP address into network and host portions to identify which subnet a host belongs to
A subnet mask identifies which part of an IP address refers to the network and which part refers to the individual host, enabling logical network segmentation.
Which protocol is used to automatically assign IP addresses to devices on a network?
Answer: DHCP
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, default gateways, and DNS servers to devices joining a network.
What is the difference between symmetric and asymmetric encryption?
Answer: Symmetric uses the same key for encryption and decryption; asymmetric uses a public key to encrypt and a private key to decrypt
Symmetric encryption uses one shared secret key for both operations, while asymmetric encryption uses a mathematically related key pair where data encrypted with the public key can only be decrypted with the private key.