Online Exam: CCNA V4 Practice Quiz Questions!
- 1.Which options are properties of contention-based media access for a shared media? (Choose three.)
- A.
Non-deterministic
- B.
Less overhead
- C.
One station transmits at a time
- D.
Collisions exist
- E.
Devices must wait their turn
- F.
Token passing
- 2.What is a primary purpose of encapsulating packets into frames?
- A.
Provide routes across the internetwork
- B.
Format the data for presentation to the user
- C.
Facilitate the entry and exit of data on media
- D.
Identify the services to which transported data is associated
- 3.
Refer to the exhibit. How many unique CRC calculations will take place as traffic routes from the PC to the laptop?- A.
1
- B.
2
- C.
4
- D.
8
- E.
16
- 4.What is true concerning physical and logical topologies?
- A.
The logical topology is always the same as the physical topology.
- B.
Physical topologies are concerned with how a network transfers frames.
- C.
Physical signal paths are defined by Data Link layer protocols.
- D.
Logical topologies consist of virtual connections between nodes.
- 5.
Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for http://www.server?
- A.
00-1c-41-ab-c0-00
- B.
00-0c-85-cf-65-c0
- C.
00-0c-85-cf-65-c1
- D.
00-12-3f-32-05-af
- 6.What are three characteristics of valid Ethernet Layer 2 addresses? (Choose three.)
- A.
They are 48 binary bits in length.
- B.
They are considered physical addresses.
- C.
They are generally represented in hexadecimal format.
- D.
They consist of four eight-bit octets of binary numbers.
- E.
They are used to determine the data path through the network.
- F.
They must be changed when an Ethernet device is added or moved within the network.
- 7.
Refer to the exhibit. A frame is being sent from the PC to the laptop. Which source MAC and IP addresses will be included in the frame as it leaves RouterB? (Choose two.)
- A.
Source MAC – PC
- B.
Source MAC – S0/0 on RouterA
- C.
Source MAC – Fa0/1 on RouterB
- D.
Source IP – PC
- E.
Source IP – S0/0 on RouterA
- F.
Source IP – Fa0/1 of RouterB
- 8.What determines the method of media access control? (Choose two.)
- A.
Network layer addressing
- B.
Media sharing
- C.
Application processes
- D.
Logical topology
- E.
Intermediary device function
- 9.What is the purpose of the preamble in an Ethernet frame?
- A.
Is used as a pad for data
- B.
Identifies the source address
- C.
Identifies the destination address
- D.
Marks the end of timing information
- E.
Is used for timing synchronization with alternating patterns of ones and zeros
- 10.What statements are true regarding addresses found at each layer of the OSI model? (Choose two.)
- A.
Layer 2 may identify devices by a physical address burned into the network card
- B.
Layer 2 identifies the applications that are communicating
- C.
Layer 3 represents a hierarchical addressing scheme
- D.
Layer 4 directs communication to the proper destination network
- E.
Layer 4 addresses are used by intermediary devices to forward data
- 11.Which statements describe the logical token-passing topology? (Choose two.)
- A.
Network usage is on a first come, first serve basis.
- B.
Computers are allowed to transmit data only when they possess a token.
- C.
Data from a host is received by all other hosts.
- D.
Electronic tokens are passed sequentially to each other.
- E.
Token passing networks have problems with high collision rates.
- 12.Which sublayer of the data link layer prepares a signal to be transmitted at the physical layer?
- A.
LLC
- B.
MAC
- C.
HDLC
- D.
NIC
- 13.What is true regarding media access control? (Choose three.)
- A.
Ethernet utilizes CSMA/CD
- B.
Defined as placement of data frames on the media
- C.
Contention-based access is also known as deterministic
- D.
802.11 utilizes CSMA/CD
- E.
Data Link layer protocols define the rules for access to different media
- F.
Controlled access contains data collisions
- 14.What is a characteristic of a logical point-to-point topology?
- A.
The nodes are physically connected.
- B.
The physical arrangement of the nodes is restricted.
- C.
The media access control protocol can be very simple.
- D.
The data link layer protocol used over the link requires a large frame header.
- 15.What two facts are true when a device is moved from one network or subnet to another? (Choose two.)
- A.
The Layer 2 address must be reassigned.
- B.
The default gateway address should not be changed.
- C.
The device will still operate at the same Layer 2 address.
- D.
Applications and services will need additional port numbers assigned.
- E.
The Layer 3 address must be reassigned to allow communications to the new network.
- 16.What is a function of the data link layer?
- A.
Provides the formatting of data
- B.
Provides end-to-end delivery of data between hosts
- C.
Provides delivery of data between two applications
- D.
Provides for the exchange data over a common local media
- 17.Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.)
- A.
The Layer 3 protocol selected
- B.
The geographic scope of the network
- C.
The PDU defined by the transport layer
- D.
The physical layer implementation
- E.
The number of hosts to be interconnected
- 18.What is the primary purpose of the trailer in a data link layer frame?
- A.
Define the logical topology
- B.
Provide media access control
- C.
Support frame error detection
- D.
Carry routing information for the frame
- 19.A network administrator has been asked to provide a graphic representation of exactly where the company network wiring and equipment are located in the building. What is this type of drawing?
- A.
Logical topology
- B.
Physical topology
- C.
Cable path
- D.
Wiring grid
- E.
Access topology
- 20.
Refer to the exhibit. Which statement describes the media access control methods that are used by the networks in the exhibit?
- A.
All three networks use CSMA/CA
- B.
None of the networks require media access control.
- C.
Network 1 uses CSMA/CD and Network 3 uses CSMA/CA.
- D.
Network 1 uses CSMA/CA and Network 2 uses CSMA/CD.
- E.
Network 2 uses CSMA/CA and Network 3 uses CSMA/CD.
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