Cisco quiz 5

Which action is taken by a Layer 2 switch when it receives a Layer 2 broadcast frame?

It sends the frame to all ports except the port on which it received the frame. Refer to curriculum topic: 5.3.1 When a Layer 2 switch receives a frame with a broadcast destination address, it floods the frame to all ports except the port on which it received the frame.

Refer to the graphic. H2 has sent a broadcast message to all of the hosts. If host H1 wants to reply to the broadcast message, which statement is true?

H1 sends a unicast message to H2, and the switch forwards it directly to H2. Refer to curriculum topic: 5.3.1 Since H2 has just sent a broadcast message to all hosts, the MAC address for H2 is already in the switch MAC table. A unicast message from H1 to H2 will therefore be forwarded by the switch directly to H2.

Which term defines the processing capabilities of a switch by rating how much data can be processed per second?

forwarding rate Refer to curriculum topic: 5.3.2 The forwarding rate defines the processing capabilities of a switch by rating how much data the switch can process per second. Entry-layer switches have lower forwarding rates than enterprise-layer switches.

Which interface command must be entered in a Layer 3 switch before an IPv4 address can be assigned to that interface?

no switchport Refer to curriculum topic: 5.3.3 The no switchport command puts a Layer 3 switch port into Layer 3 mode. The no shutdown command brings an interface up. The switchport command puts a port of a Layer 3 switch in the Layer 2 mode. The ip classless command configures a router to use classless addressing.

On Ethernet networks, the hexadecimal address FF-FF-FF-FF-FF-FF represents _________ the MAC address.

broadcast Refer to curriculum topic: 5.1.3 On Ethernet networks, the broadcast MAC address is 48 binary ones displayed as hexadecimal FF-FF-FF-FF-FF-FF.​

Refer to the exhibit. What is the destination MAC address of the Ethernet frame as it leaves the web server if the final destination is PC1?

00-60-2F-3A-07-CC Refer to curriculum topic: 5.1.4 The destination MAC address is used for local delivery of Ethernet frames. The MAC (Layer 2) address changes at each network segment along the path. As the frame leaves the web server, it will be delivered by using the MAC address of the default gateway.

A collision fragment, also known as a __________ frame, is a frame of fewer than 64 bytes in length.​

RUNT Refer to curriculum topic: 5.1.2 A runt frame is a frame of fewer than 64 bytes, usually generated by a collision or a network interface failure.

What is a characteristic of a contention-based access method?

It is a nondeterministic method. Refer to curriculum topic: 5.1.1 Contention-based methods are nondeterministic and do not have the overhead that is found with controlled access methods. They do not track the turns because devices do not take turns to access the media. Contention-based methods do not scale well under heavy use.

Which destination address is used in an ARP request frame?

FFFF.FFFF.FFFF Refer to curriculum topic: 5.2.1 The purpose of an ARP request is to find the MAC address of the destination host on an Ethernet LAN. The ARP process sends a Layer 2 broadcast to all devices on the Ethernet LAN. The frame contains the IP address of the destination and the broadcast MAC address, FFFF.FFFF.FFFF. The host with the IP address that matches the IP address in the ARP request will reply with a unicast frame that includes the MAC address of the host. Thus the original sending host will obtain the destination IP and MAC address pair to continue the encapsulation process for data transmission.

Which two functions or operations are performed by the MAC sublayer? (Choose two.)

It is responsible for Media Access Control. It adds a header and trailer to form an OSI Layer 2 PDU. Refer to curriculum topic: 5.1.1 The MAC sublayer is the lower of the two data link sublayers and is closest to the physical layer. The two primary functions of the MAC sublayer are to encapsulate the data from the upper layer protocols and to control access to the media.

What type of address is 01-00-5E-0A-00-02?

an address that reaches a specific group of hosts Refer to curriculum topic: 5.1.3 The multicast MAC address is a special value that begins with 01-00-5E in hexadecimal. It allows a source device to send a packet to a group of devices

Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

RT1 will send an ARP reply with its own Fa0/0 MAC address. Refer to curriculum topic: 5.2.1 When a network device has to communicate with a device on another network, it broadcasts an ARP request asking for the default gateway MAC address. The default gateway (RT1) unicasts an ARP reply with the Fa0/0 MAC address.

The Ethernet ________ sublayer is responsible for communicating directly with the physical layer.

MAC Refer to curriculum topic: 5.1.1 Ethernet at the data link layer is divided into two sublayers – the MAC and the LLC sublayers. The LLC sublayer is responsible for communicating with the upper layers, and the MAC sublayer communicates directly with the physical layer.