Networking Chapter 5 extra questions

shared memory buffering

A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to a port connected to a 100Base-T network. Which method of memory buffering would work best for this task? - port-based buffering - level 1 cache buffering - shared memory buffering - fixed configuration buffering

by expanding the port density

How does adding an Ethernet line card affect the form factor of a switch? by increasing the back plane switching speed by expanding the port density by making the switch stackable by expanding the NVRAM capacity

by expanding the port density

How does adding an Ethernet line card affect the form factor of a switch? - by increasing the back plane switching speed - by expanding the port density - by expanding the NVRAM capacity - by making the switch stackable

B C

A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in its ARP cache. How will the device obtain a destination MAC address? (Choose two.) a) It will send an ARP request for the MAC address of the destination device. b) It will send an ARP request for the MAC address of the default gateway. c) It will send the frame and use its own MAC address as the destination. d) It will send the frame with a broadcast MAC address. e) It will send a request to the DNS server for the destination MAC address.

A B D

A network administrator is connecting two modern switches using a straight-through cable. The switches are new and have never been configured. Which three statements are correct about the final result of the connection? (Choose three.) a) The link between the switches will work at the fastest speed that is supported by both switches. b) The link between switches will work as full-duplex. c) If both switches support different speeds, they will each work at their own fastest speed. d) The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable. e) The connection will not be possible unless the administrator changes the cable to a crossover cable. f) The duplex capability has to be manually configured because it cannot be negotiated.

a routed port

A network administrator issues the following commands on a Layer 3 switch: DLS1(config)# interface f0/3 DLS1(config-if)# no switchport DLS1(config-if)# ip address 172.16.0.1 255.255.255.0 DLS1(config-if)# no shutdown DLS1(config-if)# end What is the administrator configuring? - a Cisco Express Forwarding instance - a routed port - a trunk interface - a switched virtual interface

0030.a3e5.0401

Launch PT. Hide and Save PT Open the PT Activity. Perform the tasks in the activity instruction and then answer the question. What destination address will PC1 include in the destination address field of the Ethernet frame that it sends to PC2? - 00e0.b0be.8014 - 0030.a3e5.0401 - 192.168.0.34 - 192.168.0.17 - 0007.ec35.a5c6

0030.a3e5.0401

Open the PT Activity. Perform the tasks in the activity instruction and then answer the question. What destination address will PC1 include in the destination address field of the Ethernet frame that it sends to PC2? - 192.168.0.17 - 192.168.0.34 - 0030.a3e5.0401 - 00e0.b0be.8014 - 0007.ec35.a5c6

MAC and IP addresses

Which address or combination of addresses does a Layer 3 switch use to make forwarding decisions? - MAC and IP addresses - MAC address only - MAC and port addresses - port address only - IP address only

A E

What are two features of ARP? (Choose two.) a) 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. b) 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. c) 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. d) If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment. e) If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

It is a nondeterministic method

What is a characteristic of a contention-based access method? - It processes more overhead than the controlled access methods do. - It has mechanisms to track the turns to access the media. - It is a nondeterministic method. - It scales very well under heavy media use.

01-00-5E-0B-22-38

What is the Layer 2 multicast MAC address that corresponds to the Layer 3 IPv4 multicast address 224.139.34.56? - 00-00-00-0B-22-38 - 01-00-5E-0B-22-38 - 01-5E-00-0B-22-38 - FE-80-00-0B-22-38 - FF-FF-FF-0B-22-38

is used for timing synchronization

What is the purpose of the preamble in an Ethernet frame? - is used as a padding for data - is used for timing synchronization - is used to identify the source address - is used to identify the destination address

collisions can decrease network performance

What statement illustrates a drawback of the CSMA/CD access method? - Collisions can decrease network performance. - Deterministic media access protocols slow network performance. - CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies. - It is more complex than non-deterministic protocols.

when another switch is connected to the switch port

When would a switch record multiple entries for a single switch port in its MAC address table? - when a router is connected to the switch port - when multiple ARP broadcasts have been forwarded - when another switch is connected to the switch port - when the switch is configured for Layer 3 switching

MAC and IP addresses

Which address or combination of addresses does a Layer 3 switch use to make forwarding decisions? - IP address only - port address only - MAC address only - MAC and port addresses - MAC and IP addresses

C D

Which two statements are correct about MAC and IP addresses during data transmission if NAT is not involved? (Choose two.) a) A packet that has crossed four routers has changed the destination IP address four times. b) Destination MAC addresses will never change in a frame that goes across seven routers. c) Destination and source MAC addresses have local significance and change every time a frame goes from one LAN to another. d) Destination IP addresses in a packet header remain constant along the entire path to a target host. e) Every time a frame is encapsulated with a new destination MAC address, a new destination IP address is needed.

C D

Which two statements describe a fixed configuration Ethernet switch? (Choose two.) a) The switch cannot be configured with multiple VLANs. b) An SVI cannot be configured on the switch. c) A fixed configuration switch may be stackable. d) The number of ports on the switch cannot be increased. e) The port density of the switch is determined by the Cisco IOS.