CCNA 1 v7.0 Final Exam - Introduction to Networks

If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1?

• nothing, because the router has a route to the destination network

• open the header and use it to determine whether the data is to be sent out S0/0/0

• open the header and replace the destination MAC address with a new one

• remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0

What will happen if the default gateway address is incorrectly configured on a host?

• The host cannot communicate with other hosts in the local network.

• The host cannot communicate with hosts in other networks.

• A ping from the host to 127.0.0.1 would not be successful.

• The host will have to use ARP to determine the correct address of the default gateway.

• The switch will not forward packets initiated by the host.

What are two features of ARP? (Choose two.)

• When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses.

• An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address.

• If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.

• • If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment.

• If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication?

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

• enables IPv4 and IPv6 to utilize the same physical medium

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

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

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

Other case 1:

• • responsible for internal structure of Ethernet frame

• • applies source and destination MAC addresses to Ethernet frame

• 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

Other Case 2:

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

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

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

• adds Ethernet control information to network protocol data

• applies source and destination MAC addresses to Ethernet frame

Other case 3:

• enables IPv4 and IPv6 to utilize the same physical medium

• adds Ethernet control information to network protocol data

• applies source and destination MAC addresses to Ethernet frame

• • responsible for the internal structure of Ethernet frame

• • implements trailer with frame check sequence for error detection

Other Case 4:

• enables IPv4 and IPv6 to utilize the same physical medium

• • applies source and destination MAC addresses to Ethernet frame

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

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

• responsible for internal structure of Ethernet frame

What is an advantage for small organizations of adopting IMAP instead of POP?

• POP only allows the client to store messages in a centralized way, while IMAP allows distributed storage.

• Messages are kept in the mail servers until they are manually deleted from the email client.

• When the user connects to a POP server, copies of the messages are kept in the mail server for a short time, but IMAP keeps them for a long time.

• IMAP sends and retrieves email, but POP only retrieves email.

A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?

• tracert

• ipconfig

• netstat

• nslookup