MIDTERM EXAM CTS1650
What are two actions performed by a Cisco switch? (Choose two.) building a routing table that is based on the first IP address in the frame header examining the destination MAC address to add new entries to the MAC address table forwarding frames with unknown destination IP addresses to the default gateway using the source MAC addresses of frames to build and maintain a MAC address table utilizing the MAC address table to forward frames via the destination MAC address
using the source MAC addresses of frames to build and maintain a MAC address table utilizing the MAC address table to forward frames via the destination MAC address
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-AA 00-60-2F-3A-07-DD 00-60-2F-3A-07-CC 00-60-2F-3A-07-BB
00-60-2F-3A-07-CC
Which is a multicast MAC address? 5C-26-0A-4B-19-3E 01-00-5E-00-00-03 00-26-0F-4B-00-3E FF-FF-FF-FF-FF-FF
01-00-5E-00-00-03
The PC is connected to the console port of the switch. All the other connections are made through Fast Ethernet links. Which types of UTP cables can be used to connect the devices? 1 - rollover, 2 - crossover, 3 - straight-through 1 - rollover, 2 - straight-through, 3 - crossover 1 - crossover, 2 - rollover, 3 - straight-through 1 - crossover, 2 - straight-through, 3 - rollover
1 - rollover, 2 - straight-through, 3 - crossover
For the TCP/IP protocol suite, what is the correct order of events when a Telnet message is being prepared to be sent over the network?
1. Telnet-formatted data is provided to the next layer 2. TCP header is added 3. IP header is added 4. Ethernet header is added
Which two functions are performed at the MAC sublayer of the OSI data link layer? (Choose two.) Adds Layer 2 control information to network protocol data. Enables IPv4 and IPv6 to utilize the same network interface and media. Implements a trailer to detect transmission errors. Places information in the frame that identifies which network layer protocol is being used for the frame. Controls the NIC responsible for sending and receiving data on the physical medium.
Controls the NIC responsible for sending and receiving data on the physical medium Implements a trailer to detect transmission errors.
What process involves placing one PDU inside of another PDU?
Encapsulation
A web client is receiving a response for a web page from a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to decode the received transmission?
Ethernet, IP, TCP, HTTP
Which port does Switch0 use to send frames to the host with the IPv4 address 10.1.1.5? Fa0/1 Fa0/5 Fa0/9 Fa0/11
Fa0/11
Match the description to the following organization?
ISOC - This organization promotes the open development, evolution, and use of the Internet throughout the world. ISO - This organization is the largest developer of international standards in the world for a wide variety of products and services. It is known for its Open Systems Interconnection (OSI) reference model. EIA - None IANA - This organization is responsible for overseeing and managing IP address allocation, domain name management, and protocol identifiers
Which two statements describe the services provided by the data link layer? (Choose two.) It ensures that application data will be transmitted according to the prioritization. It packages various Layer 3 PDUs into a frame format that is compatible with the network interface. It defines the end-to-end delivery addressing scheme. It provides reliable delivery through link establishment and flow control. It maintains the path between the source and destination devices during the data transmission. It manages the access of frames to the network media. Navigation Bar
It manages the access of frames to the network media. It packages various Layer 3 PDUs into a frame format that is compatible with the network interface.
What is a characteristic of the LLC sublayer? It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media. It provides delimitation of data according to the physical signaling requirements of the medium. It provides the logical addressing required that identifies the device. It defines software processes that provide services to the physical layer. Navigation Bar
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
Which two statements describe features or functions of the logical link control sublayer in Ethernet standards? (Choose two.) Logical link control is implemented in software. The data link layer uses LLC to communicate with the upper layers of the protocol suite. The LLC sublayer adds a header and a trailer to the data. The LLC sublayer is responsible for the placement and retrieval of frames on and off the media. Logical link control is specified in the IEEE 802.3 standard. Navigation Bar
Logical link control is implemented in software. The data link layer uses LLC to communicate with the upper layers of the protocol suite.
What are three ways that media access control is used in networking? (Choose three.) 802.11 utilizes CSMA/CD. Media access control provides placement of data frames onto the media. Data link layer protocols define the rules for access to different media. Ethernet utilizes CSMA/CD. Networks with controlled access have reduced performance due to data collisions. Contention-based access is also known as deterministic. Navigation Bar
Media access control provides placement of data frames onto the media. Data link layer protocols define the rules for access to different media. Ethernet utilizes CSMA/CD.
which statement accurately describes a tcp/ip encapsulation process when a pc is sending data to the network?
Segments are sent from the transport layer to the internet layer.
What action will occur if a host receives a frame with a destination MAC address of FF:FF:FF:FF:FF:FF? The host returns the frame to the switch. The host will process the frame. The host forwards the frame to all other hosts. The host replies to the switch with its own IP address.
The host will process the frame.
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.) The link between switches will work as full-duplex. The connection will not be possible unless the administrator changes the cable to a crossover cable. If both switches support different speeds, they will each work at their own fastest speed. The duplex capability has to be manually configured because it cannot be negotiated. The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable. The link between the switches will work at the fastest speed that is supported by both switches.
The link between the switches will work at the fastest speed that is supported by both switches. The link between switches will work as full-duplex. The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network? The logical address is added. The process port number is added. An IP address is added. The physical address is added.
The physical address is added.
Refer to the exhibit. What is wrong with the displayed termination? The woven copper braid should not have been removed. The untwisted length of each wire is too long. The wrong type of connector is being used. The wires are too thick for the connector that is used.
The untwisted length of each wire is too long.
what is a characteristic of multicast messages?
They are sent to a select group of hosts.
Which statement describes a characteristic of the frame header fields of the data link layer? They all include the flow control and logical connection fields. Ethernet frame header fields contain Layer 3 source and destination addresses. They vary depending on protocols. They include information on user applications.
They vary depending on protocols.
Refer to the graphic. What type of cabling is shown? STP fiber UTP coax
UTP
What type of communication rule would best describe CSMA/CD? message encoding flow control access method message encapsulation
access method
At which OSI layer is data added to a PDU during the encapsulation process?
application layer
What is a primary role of the Physical layer in transmitting data on the network? create the signals that represent the bits in each frame on to the media provide physical addressing to the devices determine the path packets take through the network control data access to the media
create the signals that represent the bits in each frame on to the media
Which two OSI model layers have the same functionality as a single layer of the TCP/IP model?
data link and physical layers
What three items are contained in an Ethernet header and trailer? (Choose three.) source IP address source MAC address destination IP address destination MAC address error-checking information
destination MAC address source MAC address error-checking information
In addition to the cable length, what two factors could interfere with the communication carried over UTP cables? (Choose two.) signal modulation technique size of the network bandwidth electromagnetic interference crosstalk
electromagnetic interference crosstalk
What is contained in the trailer of a data-link frame? physical address data error detection logical address
error detection
Refer to the graphic. What type of cabling is shown? STP fiber coax UTP
fiber
what method can be used by two computers to ensure that packets are not dropped because too much data is being sent too quickly?
flow control
What are two examples of the cut-through switching method? (Choose two.) store-and-forward switching fast-forward switching CRC switching fragment-free switching QOS switching
fragment-free and fast-forward
Which PDU format is used when bits are received from the network medium by the NIC of a host?
frame
Which advantage does the store-and-forward switching method have compared with the cut-through switching method? frame error checking faster frame forwarding collision detecting frame forwarding using IPv4 Layer 3 and 4 information
frame error checking
What OSI physical layer term describes the measure of usable data transferred over a given period of time? goodput air fiber-optic cable copper cable
goodput
What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.) greater distances per cable run lower installation cost limited susceptibility to EMI/RFI durable connections greater bandwidth potential easily terminated
greater bandwidth potential limited susceptibility to EMI/RFI greater distances per cable run
What is one advantage of using the cut-through switching method instead of the store-and-forward switching method? has a lower latency appropriate for high-performance computing applications makes a fast forwarding decision based on the source MAC address of the frame has a positive impact on bandwidth by dropping most of the invalid frames provides the flexibility to support any mix of Ethernet speeds
has a lower latency appropriate for high-performance computing applications
What layer is responsible for routing messages through an internetwork in TCP/IP model?
internet
What does the term "attenuation" mean in data communication? loss of signal strength as distance increases leakage of signals from one cable pair to another strengthening of a signal by a networking device time for a signal to reach its destination
loss of signal strength as distance increases
Which two devices commonly affect wireless networks? (Choose two.) microwaves Blu-ray players home theaters incandescent light bulbs external hard drives cordless phones
microwaves cordless phones
What layer is responsible for routing messages through an internetwork in the TCP/IP model?
network access
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites? hub and spoke partial mesh point-to-point mesh
partial mesh
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? level 1 cache buffering fixed configuration buffering shared memory buffering port-based buffering
shared memory buffering
Which switching method uses the CRC value in a frame? store-and-forward fragment-free cut-through fast-forward
store-and-forward
When IPv4 addressing is manually configured on a web server, which property of theIPv4 configuration identifies the network and host portion for an IPv4 address?
subnet mask
With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs? the magnetic field around the adjacent pairs of wire the use of braided wire to shield the adjacent wire pairs the reflection of the electrical wave back from the far end of the cable the collision caused by two nodes trying to use the media simultaneously
the magnetic field around the adjacent pairs of wire
What is the purpose of the FCS field in a frame? to obtain the MAC address of the sending node to verify the logical address of the sending node to compute the CRC header for the data field to determine if errors occurred in the transmission and reception
to determine if errors occurred in the transmission and reception
