ITN Final exam 3 of 5

An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)

• Configure DNS on the router.

• Generate two-way pre-shared keys

• Configure the IP domain name on the router

• Generate the SSH keys

• Enable inbound vty SSH sessions

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

• handles communication between upper layer networking software and Ethernet NIC hardware

• implements trailer with frame check sequence for error detection

• places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame

• implements a process to delimit fields within an Ethernet 2 frame

• adds Ethernet control information to network protocol data

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

• handles communication between upper layer networking software and Ethernet NIC hardware

• responsible for internal structure of Ethernet frame

• places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame

• implements trailer with frame check sequence for error detection

• enables IPv4 and IPv6 to utilize the same physical medium

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

• handles communication between upper layer networking software and Ethernet NIC hardware

• integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper

• adds Ethernet control information to network protocol data

• implements CSMA/CD over legacy shared half-duplex media

• enables IPv4 and IPv6 to utilize the same physical medium

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

• handles communication between upper layer networking software and Ethernet NIC hardware

• adds Ethernet control information to network protocol data

• implements trailer with frame check sequence for error detection

• enables IPv4 and IPv6 to utilize the same physical medium

• applies delimiting of Ethernet frame fields to synchronize communication between nodes

An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?​

• all IPv6 enabled devices on the local link​

• all IPv6 DHCP servers​

• all IPv6 enabled devices across the network​

• all IPv6 configured routers on the local link​

What are the three parts of an IPv6 global unicast address? (Choose three.)

• subnet ID

• subnet mask

• broadcast address

• global routing prefix

• interface ID

Answer explanation

The general format for IPv6 global unicast addresses includes a global routing prefix, a subnet ID, and an interface ID. The global routing prefix is the network portion of the address. A typical global routing prefix is /48 assigned by the Internet provider. The subnet ID portion can be used by an organization to create multiple subnetwork numbers. The interface ID is similar to the host portion of an IPv4 address.

A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)

• extensive cabling

• coverage area

• packet collision

• interference

• security

Answer explanation

The three areas of concern for wireless networks focus on the size of the coverage area, any nearby interference, and providing network security. Extensive cabling is not a concern for wireless networks, as a wireless network will require minimal cabling for providing wireless access to hosts. Mobility options are not a component of the areas of concern for wireless networks.

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

• Enter CTRL-Z at the privileged mode prompt

• Exit global configuration mode

• Power cycle the device

• Reboot the device

• Exit privileged EXEC mode and press Enter

What method is used to manage contention-based access on a wireless network?

• token passing

• CSMA/CA

• priority ordering

• CSMA/CD