CCNA Guide to Cisco Networking Ch.1-Ch.4
Place the following steps of data encapsulation in their correct descending order:
1. Data Conversion 2. Segment header added 3. Packet creation and Network Header 4. Frame headers and trailers added 5. Bit transmission
Which layer of the OSI model is responsible for media access and packaging data into frames?
1. Data Link layer 2. Transport layer
Rank the following devices from lowest to highest latency.
1. Hub 2. Switch 3. Router 4. Gateway
Which of the following is a TCP/IP Internetwork layer protocol?
1. ICMP 2. ARP 3. IP
Which of the following accurately describe the Media Access Control (MAC) address?
1. It is a physical number set during the manufacturing process. 2. MAC addresses contain 12 hexadecimal numbers. 3. Computers use this address to uniquely identify themselves on the network.
Another name for IP address is __________ address and another name for a MAC address is __________ address.
1. Logical 2. Physical
Which of the following are network hardware?
1. NIC 2. Network media 3. Connectors
Which of the following are layers of the OSI model?
1. Physical 2. Data Link
Which of the following describes services that receive an acknowledgement from the destination?
1. Reliable 2. Connection-oriented
Which of the following accurately describe the network address?
1. This address is used when routing communications between different network segments. 2. This address is set at layer 3 of the OSI model. 3. An example of this type of address is an IP address
Given the address 190.14.20.255/20, which of the following statements is true?
1. This is a host address 2. This address is on network 190.14.16.0
Which of the following is a TCP/IP Transport layer protocol?
1. UDP 2. TCP
Which of the following is an implementation of Gigabit Ethernet?
1000BaseT
Which of the following is a Class A broadcast?
11.255.255.255
Given the following CIDR address and mask, which of the following is a broadcast on its subnetwork 162.17.12.125/24?
162.17.12.255
If your Class C address has a three-bit subnet mask, which of the following would be a subnetwork identifier?
203.16.34.32
Which of the following Class C IP addresses is a broadcast (assuming the subnet mask is 255.255.255.254)?
219.129.32.63
Which of the following would be a broadcast address for a Class C network?
221.21.23.255
What would the value of the last octet of the subnet mask be if the CIDR notation for an address is 192.168.1.16/28?
240
What would the value of the first octet of the subnet mask be if the CIDR notation for an address is 192.168.1.16/27?
255
Assuming that the address 165.24.3.6 uses the correct default mask, what is the Host Identifier?
3.6
For a Class B broadcast, which octets will be completely binary ones?
3rd & 4th
A subnet mask of 255.255.252.0 on a Class B network indicates that bits have been borrowed from the host portion of the network. How many bits have been borrowed?
6
How many network bits (maximum) can be used from the last octet of a Class C address to subnet your network?
6
Which of the following lists the layers of the OSI model from layer 7 to layer 1?
7. Application 6. Presentation 5. Session 4. Transport 3. Network 2. Data Link 1. Physical
Which of the following does not operate in the 2.4 GHz frequency range?
802.11A
Which of the following represents the highest level of 802.11 security?
802.11I
Which of the following correctly defines a WAN?
A network spread over multiple geographic areas and usually connected by publicly and privately maintained media.
Why don't repeaters and hubs segment the network?
They only work at the Physical layer where there is nothing to filter.
Given the address 190.14.20.0/22, which of the following statements is true?
This is a network address
What is the purpose of the Three-Way-Handshake?
To establish a reliable connection between two points
Which of the following reasons for providing a layered OSI architecture are correct?
To provide design modularity, which allows upgrades to a specific layer to remain separate from the other layers.
Which of the following best describes the Presentation layer?
Translates, encrypts, or prepares data from the Application layer for network transmission.
What kind of bridges do Ethernet networks use?
Translation
What kind of bridges will connect an Ethernet network to a Token Ring network?
Translation
Each interface on a router represents an IP address on a different network.
True
Class B addresses allow you to configure how many octets on your network for Host IP addresses?
Two
Which of the following is used by the TFTP protocol?
UDP
An ARP Reply is a __________.
Unicast
Connectionless services are also called __________ services.
Unreliable
What are the well known port numbers?
1-1023
Which of the following are valid network identifiers for Class A addresses?
1-126
Which of the following is a layer in the TCP/IP protocol stack?
1. Application 2. Internetwork
Which of the following are network software?
1. Components that map to the Application layer of the OSI model. 2. NOS
Which of the following is a TCP/IP Application layer protocol?
1. DNS 2. FTP
Which of the following best describes a LAN?
A network that is contained in a single geographic area such as a building or floor in a building.
Which of the following best describes a network segment?
A section of the network that has been separated from other segments by a router, bridge, or switch.
Which of the following is an appropriate description of a broadcast storm?
An error condition when which many broadcasts are sent simultaneously across the entire network.
Which of the following is not true about bridges?
Bridges do not forward.
An ARP Request is a __________.
Broadcast
Which of the following is the correct name for a device that operates at both the Data Link and Network Layers of the OSI reference model?
Brouter
How does CIDR conserve IP addresses?
By allocating IP network numbers on criteria other than traditional bit boundaries
Which of the following address classes allows you to borrow a maximum of 14 bits to create a subnet mask?
Class B
When two stations broadcast at the same time on a single segment of an Ethernet network, what happens?
Collision
RARP has largely been replaced by __________.
DHCP
Information transmitted on a network is called a __________.
Data Frame
A switch divides network communications at which layer of the OSI model?
Data Link
Bridges operate at which layer of the OSI model?
Data Link
Which of the following OSI layers contains Media Access Control information?
Data Link
Transmitted signals are bound for a __________.
Destination
Which layer of Cisco's Three-Layer Hierarchial model provides services such as traffic control and security to the network?
Distribution Layer
Distance-Vector algorithms and Link-State algorithms are used in __________.
Dynamic routing
A router that has eight ports will require how many IP addresses?
Eight
Which of the following best describes the Session layer?
Establishes, maintains, and manages sessions between applications.
The TCP acknowledgement process is __________.
Expectational
What is the purpose of the reserved numbers in a Class E address?
Experimental
All computers on the local segment process an ARP request at layer 4 of the OSI model.
False
All networking vendors follow the OSI model and design seven layer architectures.
False
Routers pass ARP Broadcasts to find MAC address on other networks.
False
Which of the following devices translates between different protocols?
Gateway
Which of the following best describes the Data Link Layer?
Handles link control and uses the MAC address on the network interface card (NIC).
Which of the following best describes the Network layer?
Handles routing information for data packets.
Ping and Trace both rely on what protocol?
ICMP
If a bridge receives a frame that has a destination MAC address located on the same segment from which it came, what will happen to the frame at the bridge?
It will be dropped.
A protocol is to a computer as a __________ is to a person.
Language
Which type of addresses do routers use?
Logical
What is an ARP table?
MAC and corresponding IP addresses
What is the advantage of using a switch rather than a bridge?
Microsegmentation
What is the purpose of the reserved numbers in a Class D address?
Multicast
Routers operate at which layer of the OSI model?
Network
The __________ layer is responsible for finding the best path to route packets within an internetwork.
Network
What do computers do with the information in an ARP request when they are not the destination IP?
None of the above/nothing
Which type of addresses do bridges use?
Physical
At which layer of the OSI model will encryption and compression occur?
Presentation layer
On a network, computers must use a common __________ in order for communication to occur.
Protocol
Which of the following best describes the Application layer?
Provides network services to the user.
Which of the following best describes the Physical layer?
Provides the electrical and mechanical transmission of data.
Which of the following are not ICMP message types?
Relay & Reroute
Connection oriented services are also known as __________ services.
Reliable
A __________ can reduces broadcast traffic.
Router
Which of the following is not true about routers?
Routers are faster than repeaters.
When sending packets to remote segments, routers rely on information in __________.
Routing tables
Which of the following best describes the Transport layer?
Segments and reassembles data and provides either connection oriented or connectionless communications
In a Class C address, which octets identify the network?
The first three octets
Before networks, what did people use to transfer files?
Sneakernet
Communications on a network originate at the __________.
Source
Typically, which is the best device for increasing performance on your LAN?
Switch
Which of the following is not true about switches?
Switches do not segment the network.
Which of the following is reliable communications protocol?
TCP
what device provides functions similar to a hub in wireless networks?
Wireless Access Point