101 Flashcards
(52 cards)
What does ARP stand for?
Address Resolution Protocol
True or False: ARP is used to map IP addresses to MAC addresses.
True
What type of protocol is ARP?
A network layer protocol
Fill in the blank: ARP operates primarily within the ______ layer of the OSI model.
Data Link
What does DNS stand for?
Domain Name System
True or False: DNS translates domain names into IP addresses.
True
What kind of records does DNS use to store information?
Resource Records
Which DNS record type is used to map a domain to an IPv4 address?
A record
What is the purpose of an MX record in DNS?
To specify the mail server for a domain
Fill in the blank: The ARP request is sent as a ______ broadcast.
Layer 2
What protocol does DNS primarily use for communication?
UDP (User Datagram Protocol)
True or False: ARP can only resolve addresses on the same local network.
True
What is the primary function of a DNS resolver?
To query DNS servers on behalf of the client
Which port does DNS typically use?
Port 53
What is the role of a DNS server in the resolution process?
To respond to queries with the requested IP address
True or False: ARP caches are used to store recently resolved IP-to-MAC address mappings.
True
What is the maximum length of a DNS label?
63 characters
Fill in the blank: A ______ is a sequence of DNS labels separated by dots.
Fully Qualified Domain Name (FQDN)
What is the purpose of the ARP cache timeout?
To remove stale entries that may no longer be valid
What does TTL stand for in the context of DNS?
Time to Live
True or False: DNS uses a hierarchical structure for naming.
True
What is a CNAME record used for in DNS?
To create an alias for another domain name
What happens when an ARP request is sent?
The device sends a broadcast asking for the MAC address associated with an IP address.
Which layer of the OSI model does DNS operate at?
Application layer
