Network Configuration Flashcards
7 cards from real CSA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Network Configuration flashcards as text
Which device or service typically terminates TLS and distributes incoming requests across multiple application nodes?
Answer: Load balancer
Load balancers commonly offload TLS and spread requests across a pool of backend servers.
What does session affinity (sticky sessions) on a load balancer ensure?
Answer: A user's requests keep going to the same backend node
Sticky sessions route a client's subsequent requests to the node that holds its session state.
What is the key difference between a forward proxy and a reverse proxy?
Answer: A forward proxy acts for clients; a reverse proxy acts for servers
Forward proxies represent internal clients going out, while reverse proxies front backend servers for incoming requests.
Which DNS record is used for reverse lookups that map an IP address back to a hostname?
Answer: PTR
PTR records in the in-addr.arpa or ip6.arpa zones provide reverse DNS mapping.
A stateful firewall allows an outbound HTTPS request. What happens to the return traffic?
Answer: It is allowed automatically because the connection is tracked
Stateful firewalls track connections and permit related return traffic without separate inbound rules.
What does NAT primarily allow an organization to do?
Answer: Let many private hosts share public IP addresses
Network Address Translation maps private internal addresses to one or more public addresses.
Which tool best confirms that a remote server is listening on a specific TCP port?
Answer: telnet or nc to the host and port
telnet or netcat opens a TCP connection to a specific port, while ping only tests ICMP reachability.