OSI Layers Practice Exam for Cisco CCNA Certification

The Cisco CCNA certification requires understanding the OSI network model. CCNA certification practice exams are a great way to prepare for the Cisco CCNA certification and for jobs that will require you to configure, install, maintain, and even recover the use of Cisco routers and switches. This free practice exam will help you to know the OSI Layers well enough to understand the relationship between each of the OSI Layers and each component of the OSI network model as related to how a computer communicates over the network. The Cisco CCNA certification is an entry level certification which will equip you for the type of work that requires extensive use of the first three layers of the OSI network model.

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CCNA OSI layers exam question #1) Which of the following is not a benefit of the OSI reference model?
  1. The network model's operations are divided into more manageable pieces.
  2. Changes can be made on one layer w/o having to make changes to all layers.
  3. A standard interface makes multivendor integration possible.
  4. It guarantees equipment compatability across different equipment vendors
 
CCNA OSI layers exam question #2) Which of the OSI layers handles encryption of data?
  1. Application
  2. Presentation
  3. Session
  4. transport
 
CCNA OSI layers exam question #3) Which OSI layer is responsible for the user interface?
  1. Presentation
  2. Application
  3. Session
  4. Transport
 
CCNA OSI layers exam question #4) Which OSI layer is responsible for maintaining or destroying a connection between two hosts?
  1. Application
  2. Session
  3. Transport
  4. Presentation
 
CCNA OSI layers exam question #5) Which of the following is not a session layer protocol?
  1. RPC
  2. X-Window
  3. NFS
  4. UDP
 
CCNA OSI layers exam question #6) Which standardized format is not associated with the OSI presentation layer?
  1. SQL
  2. PICT
  3. TIFF
  4. MIDI
 
CCNA OSI layers exam question #7) Which OSI layer encapsulates bits into frames?
  1. MAC sublayer
  2. Data link layer
  3. Network layer
  4. Session layer
 
CCNA OSI layers exam question #8) Which OSI layer carries a host address as a means of identifying a specific destination host NIC on a subnetwork?
  1. Network layer
  2. Data link layer
  3. Transport layer
  4. Session layer
 
CCNA OSI layers exam question #9) Which OSI layer allows the forwarding of broadcast storms using a network device designed to function at that same layer?
  1. Network layer
  2. Data link layer
  3. Transport layer
  4. A Router
 
CCNA OSI layers exam question #10) When using the method of "windowing", if the receiving host were to acknowledge the receipt of a window, would it return the segment number last received or the next one expected?
  1. Last one received
  2. Next one expected
 
CCNA OSI layers exam question #11) Store and forward messaging makes use of which layer 4 protocol?
  1. TCP
  2. IP
  3. UDP
  4. SNMP
 
CCNA OSI layers exam question #12) The OSI model was created with the intention of:
  1. Allowing different equipment vendors to create inter-operable equipment
  2. Creating a layered network model
  3. Allowing software developers to write a network interface for applications
  4. Providing a reference model for network application design
 
CCNA OSI layers exam question #13) The Network "user interface" is provided by which OSI layer?
  1. Session layer
  2. Presentation layer
  3. Application layer
  4. Network layer
 
CCNA OSI layers exam question #14) Logical device addressing is a function of which OSI layer?
  1. Transport
  2. Session
  3. Data link
  4. Network
 
CCNA OSI layers exam question #15) Error detection is a function of which OSI layer?
  1. Physical
  2. Session
  3. Data link
  4. Network
 
CCNA OSI layers exam question #16) Error correction is a function of which OSI layer?
  1. Data link
  2. Transport
  3. Network
  4. Session
 
CCNA OSI layers exam question #17) Reliable delivery is a product of which transport layer protocol?
  1. UDP
  2. SMTP
  3. TCP
  4. telnet
 
CCNA OSI layers exam question #18) Flow control prevents what condition from occurring on a receiving host's interface?
  1. Data segments from being acknowledged
  2. Lack of data integrity
  3. Buffer overflow causing data loss
  4. Excessive segment acknowledgements
 
CCNA OSI layers exam question #19) Which OSI layer provides for the setup and teardown of virtual circuits?
  1. Session layer
  2. Presentation layer
  3. Network layer
  4. Transport layer
 
CCNA OSI layers exam question #20) Which device in the list operates primarily at layer three?
  1. Brouter
  2. Hub
  3. Bridge
  4. Switch
  5. Router
 
CCNA OSI layers exam question #21) Which of the following is true of routers?
  1. Routers do not isolate broadcast domains
  2. Routers use the physical address in the layer three header to determine the next hop address
  3. Routers do not not provide connections between VLANs
  4. Routers can provide layer 2 bridging functions while simultaneously routing thru the same interface
 
CCNA OSI layers exam question #22) Ethernet networks provide network services that operate at which two OSI layers?
  1. Physical and Network layers
  2. Network and Data link layers
  3. Network and Transport layers
  4. Physical and Data link layers
 
CCNA OSI layers exam question #23) Which layer two ethernet frame type can be used to identify the layer three protocol?
  1. CDP
  2. 802.3
  3. 802.2 or SNAP
  4. 802.5
 
CCNA OSI layers exam question #24) Select the correct order of encapsulation steps from the list below;
  1. PDU,segments,packets,frames,bits
  2. segments,PDU,packets,frames,bits
  3. bits,segments,PDU,packets,frames
  4. Bits, PDU,segments,packets,frames
 
CCNA OSI layers exam question #25) At which point is a logical address added to the data being prepared for transport?
  1. When user information is converted to data
  2. When packets or datagrams are converted to frames
  3. When segments are converted to packets
  4. When the data is converted to segments
 

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