17.5.3 Module 17 – Cisco Switches and Routers Quiz Answers
1. A technician is setting up a network in a new room. What is the best device to use to connect the PCs to each other and to the rest of the LAN?
- switch
- gateway
- router
- firewall
Explanation: A gateway is a router used to interconnect networks and is not necessary in this situation. A hub does not segment a network and allows collisions to take place on the network segment. A switch will interconnect all the devices in a LAN.
2. During normal operation, from which location do most Cisco switches run the IOS?
- disk drive
- flash
- RAM
- NVRAM
Explanation: When a Cisco switch is powered on, the IOS is copied into RAM. The switch then runs the IOS from RAM, thus enhancing operating performance.
3. When a router is powered on, where will the router first search for a valid IOS image to load by default?
- NVRAM
- ROM
- flash memory
- RAM
Explanation: By default, if no boot system commands are in the configuration, a router will load the first valid Cisco IOS image in flash memory and run it. RAM is active memory that is not used to store image files. NVRAM stores configuration files. ROM stores a minimal version of the Cisco IOS image that can be used to provide limited functions if a valid IOS image is not available in flash memory.
4. Which two protocols can be used to access a Cisco switch for in-band management? (Choose two.)
- DHCP
- Telnet
- SMTP
- FTP
- SSH
Explanation: Telnet and SSH are two protocols that can be used to remotely access a network device for in-band management tasks. DHCP provides dynamic IP configuration information to client devices. FTP is used for file transfers between a client and a file server. SMTP is used for email message delivery.
5. During troubleshooting procedures, from which location will most Cisco routers load a limited IOS?
- ROM
- NVRAM
- RAM
- flash
Explanation: ROM is used to store bootup instructions, basic diagnostic software, and a copy of a limited IOS. NVRAM stores the startup configuration file. RAM provides temporary storage of the running configuration file. Flash is used to store the full Cisco IOS on a device.
6. Which two networking devices are used in enterprise networks for providing network connectivity to end devices? (Choose two.)
- firewall
- wireless access point
- LAN switch
- web server
- router
Explanation: Wireless access points (AP) and LAN switches are deployed in enterprise networks to allow end devices to connect to the network wirelessly or through cables. A router is used to enable end devices on a local network to communicate with other devices on remote networks. A firewall protects a network by filtering incoming and outgoing traffic. A web server hosts web content.
7. What is required for a network administrator to perform out-of-band management tasks on a Cisco device?
- an active network connection available to the device
- SSH enabled and functional on the device
- a valid IP address configured on VLAN 1
- a computer directly connected to the console port of the device
Explanation: With out-of-band management, the only requirement is to have a computer directly connected to the console port of the device. This is the primary method to configure a new device because no network connection or prior configurations on the device is required.
8. What is the first action in the boot sequence when a switch is powered on?
- load boot loader software
- load the default Cisco IOS software
- low-level CPU initialization
- load a power-on self-test program
Explanation: The first action to take place when a switch is powered on is the POST or power-on self-test. POST performs tests on the CPU, memory, and flash in preparation for loading the boot loader.
9. What are two functions of NVRAM? (Choose two.)
- to contain the running configuration file
- to store the routing table
- to retain contents when power is removed
- to store the ARP table
- to store the startup configuration file
Explanation: NVRAM is permanent memory storage, so the startup configuration file is preserved even if the router loses power.
10. Which two ports can be used for the initial configuration of a Cisco router? (Choose two.)
- AUX
- WAN interface
- LAN interface
- console
- flash slot
Explanation: The AUX and console ports on a Cisco 1941 router can be used to perform initial setup. The initial setup does not require that the router be connected to a network. A network administrator uses a computer to connect to the console ports directly. A network administrator can also access the router remotely through a dialup phone line and a modem connected to the AUX port. LAN and WAN interfaces are used to connect to networks. The flash slots expand storage capability through the use of a compact flash card.
11. Which two files are loaded into RAM of a Cisco switch when it is booted? (Choose two.)
- IOS image file
- file that contains customer settings
- running configuration file
- routing table
- startup configuration file
Explanation: When a Cisco device boots, it loads the IOS and startup configuration files into RAM.
12. Which information does the show startup-config command display?
- the IOS image copied into RAM
- the bootstrap program in the ROM
- the contents of the current running configuration file in the RAM
- the contents of the saved configuration file in the NVRAM
Explanation: The show startup-config command displays the saved configuration located in NVRAM. The show running-config command displays the contents of the currently running configuration file located in RAM.