Module 15 Quiz - Networking Concepts PDF

**1) Which of the following is the main responsibility of the Application Layer?** a\) Provides error detection and correction for data transfer\ b) Enables communication between source and destination hosts through protocols\ c) Establishes routing paths for data packets\ d) Controls data link lay...

**1) Which of the following is the main responsibility of the Application Layer?** a\) Provides error detection and correction for data transfer\ b) Enables communication between source and destination hosts through protocols\ c) Establishes routing paths for data packets\ d) Controls data link layer operations **Answer:** b) Enables communication between source and destination hosts through protocols **2) In a client-server model, which of the following statements is true?** a\) Both the client and server share the same functions in processing and requesting data.\ b) The client sends requests for services, while the server provides the services.\ c) The server and client communicate without the need for IP addresses.\ d) The client and server do not communicate over the same network layer. **Answer:** b) The client sends requests for services, while the server provides the services. **3) What is the role of DNS in networking?** a\) To translate IP addresses into hostnames\ b) To convert human-readable domain names into IP addresses\ c) To secure communication between servers and clients\ d) To monitor and maintain the flow of network traffic **Answer:** b) To convert human-readable domain names into IP addresses **4) What happens when a DNS server cannot resolve a requested name within its database?** a\) The DNS server stops the query and sends an error response.\ b) The DNS server forwards the request to another DNS server for resolution.\ c) The client is forced to retry the query after 5 minutes.\ d) The DNS server caches the name for future requests. **Answer:** b) The DNS server forwards the request to another DNS server for resolution. **5) What is the root-level domain in DNS?** a\) The final level of the DNS hierarchy where IP addresses are stored\ b) A level that includes the domain names like.com,.net,.org,.edu\ c) The section of DNS that holds authoritative name servers for a domain\ d) A local DNS server used for name resolution within a single network **Answer:** b) A level that includes the domain names like.com,.net,.org,.edu **6) When an IPv4 DHCP client connects to the network, what is the first message it sends?** a\) DHCP Offer\ b) DHCP Request\ c) DHCP Acknowledgment\ d) DHCP Discover **Answer:** d) DHCP Discover **7) Which DHCP message does the server send in response to a DHCP Discover message?** a\) DHCP Offer\ b) DHCP Acknowledgment\ c) DHCP Request\ d) DHCP Negative Acknowledgment **Answer:** a) DHCP Offer **8) After receiving a DHCP Offer message, what does the client send back to the server?** a\) DHCP Acknowledgment\ b) DHCP Discover\ c) DHCP Request\ d) DHCP Negative Acknowledgment **Answer:** c) DHCP Request **9) What is the purpose of a DHCP Acknowledgment (DHCP ACK) message?** a\) To indicate that the client has rejected the offered IP address\ b) To confirm the IP address lease to the client\ c) To inform the client that no IP address is available\ d) To initiate a new DHCP lease process **Answer:** b) To confirm the IP address lease to the client **10) Which of the following best describes the difference between DHCP for IPv4 and IPv6?** a\) DHCP for IPv6 uses the same message types as IPv4.\ b) DHCP for IPv4 assigns addresses automatically, while IPv6 requires manual configuration.\ c) DHCP for IPv4 supports both IPv4 and IPv6 addresses, while DHCP for IPv6 only supports IPv6.\ d) DHCP for IPv6 does not provide a default gateway, unlike DHCP for IPv4. **Answer:** d) DHCP for IPv6 does not provide a default gateway, unlike DHCP for IPv4. **11) In FTP, which port is used for control traffic between the client and server?** a\) 20\ b) 21\ c) 22\ d) 80 **Answer:** b) 21 **12) How does FTP handle data transfer between the client and server?** a\) FTP uses a single connection for both control and data transfer.\ b) FTP establishes two separate connections: one for control (port 21) and one for data (port 20).\ c) FTP uses UDP for data transfer, while TCP is used for control.\ d) FTP uses wireless protocols for data transfer. **Answer:** b) FTP establishes two separate connections: one for control (port 21) and one for data (port 20). **13) What is the main purpose of the Server Message Block (SMB) protocol?** a\) To transfer email messages between client and server\ b) To enable file sharing between networked devices\ c) To establish secure communication between web servers and clients\ d) To provide IP address resolution services **Answer:** b) To enable file sharing between networked devices **14) Which of the following is true about SMB compared to FTP?** a\) FTP allows long-term connections for accessing shared resources, whereas SMB uses temporary connections.\ b) SMB allows clients to access shared resources like network drives as though they are local to the client.\ c) SMB requires the client to have a separate application to manage the connection.\ d) FTP is used for secure communication, while SMB does not support encryption. **Answer:** b) SMB allows clients to access shared resources like network drives as though they are local to the client. **15) Which of the following is NOT a function of the Application Layer?** a\) Managing data formatting and encryption\ b) Establishing connections between network devices\ c) Handling application-specific data communication between devices\ d) Converting data into packets for transmission **Answer:** d) Converting data into packets for transmission **16) What is an important feature of the IMAP protocol compared to POP?** a\) IMAP downloads and deletes emails from the server, while POP leaves them on the server.\ b) IMAP allows emails to remain on the server, while POP downloads and deletes them from the server.\ c) IMAP is only used for sending emails, while POP is used for receiving emails.\ d) IMAP is an obsolete protocol, while POP is used for modern email services. **Answer:** b) IMAP allows emails to remain on the server, while POP downloads and deletes them from the server. **17) What does the \"A\" record in DNS represent?** a\) The IP address for an authoritative name server\ b) A mail exchange server for a domain\ c) The IPv4 address for a hostname\ d) The IPv6 address for a hostname **Answer:** c) The IPv4 address for a hostname **18) When using NS lookup, if a DNS request times out, what does it indicate?** a\) The requested website cannot be reached due to a network failure.\ b) The DNS server could not resolve the name, and the client must retry.\ c) The client has incorrectly entered the domain name.\ d) The IP address of the server has changed. **Answer:** b) The DNS server could not resolve the name, and the client must retry. **19) In DNS, what is the purpose of the \"authority\" section in a DNS response?** a\) It contains additional information for the client.\ b) It provides the DNS records answering the query.\ c) It indicates the authoritative name servers for the queried domain.\ d) It resolves the IP address to the correct hostname. **Answer:** c) It indicates the authoritative name servers for the queried domain. **20) In the DNS hierarchy, what does the term \"second-level domain\" refer to?** a\) The domain name directly beneath the root level.\ b) The domain name directly beneath a top-level domain, such as \"cisco.com\" or \"google.com\".\ c) A DNS server responsible for a specific network zone.\ d) The address record used to point to a website\'s server. **Answer:** b) The domain name directly beneath a top-level domain, such as \"cisco.com\" or \"google.com\".