Test on Introduction to Computer Networking Exam
Introduction to Computer Networking Exam: Your Study Guide
Test: IP Networking — Real-time Media, Computer Networking Protocols & Services, TCP/IP & Core Networking Concepts, Network Technologies: Wired Access & Media, Local Networks & Ethernet Switching, IP Networking — IPv4 Addressing, Network Security Endpoint & Devices, Network Security Architecture & Access, IP Networking — Core L2/L3 Protocols, Network Services, Home and Cloud Networking Benefits, Network Devices, IP Networking — IPv6 Addressing, OSI and TCP/IP Network Layers, Network Security Perimeter Controls, Network Technologies: Wireless Access & RF
20 questions
Question 1: Does the service password-encryption command enhance password security by encrypting passwords stored in router or switch configuration files?
A. Ano
B. Ne
Explanation: The service password-encryption command encrypts passwords that are stored in router or switch configuration files, thereby enhancing their security.
Question 2: What is the fastest way a network administrator can test if a banner message is properly configured on a Cisco device?
A. Enter CTRL-Z at the privileged mode prompt.
B. Exit privileged EXEC mode and press Enter.
C. Exit global configuration mode.
D. Power cycle the device.
Explanation: While at the privileged mode prompt (such as Router#), typing exit and pressing Enter will display the banner message, making it the fastest way to test the configuration. Power cycling the device would also display the banner, but it is not a quick method.
Question 3: Is a broadcast address a part of an IPv6 global unicast address?
A. Ano
B. Ne
Explanation: The general format for IPv6 global unicast addresses includes a global routing prefix, a subnet ID, and an interface ID. A broadcast address is not listed as one of these parts.
Question 4: After a client using SLAAC has generated and applied an IPv6 address to its interface, what is the crucial next step it must take to ensure the address is unique before it can be used?
A. It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server.
B. It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
C. It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use.
D. It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address.
Explanation: Once an IPv6 address has been assigned to an interface via SLAAC, the client must perform Duplicate Address Detection (DAD) to ensure the address is not already in use. This is done by sending an ICMPv6 Neighbor Solicitation message and listening for a response. If a response is received, it indicates the address is already in use.
Question 5: The network layer provides dedicated end-to-end connections.
A. Ano
B. Ne
Explanation: The network layer provides connectionless, best-effort delivery, and devices rely on higher layers to supply services to processes. It does not provide dedicated end-to-end connections.