Chapter 1 Intro To Networking Flashcards
Convert the binary number 0101011011000010 to hexadecimal.
Using the conversion, 0101011011000010 is broken into the following groups: 0101 0110 1100 0010. After you have the groups, you can convert the digits to hex. 0101 is 5 in hex, 0110 is 6, 1100 is C ( the bits that are on are 8 and 4; adding them together produces 12, which is C in hex), and 0010 is 2. Therefore, 0101011011000010 is 0x56C2
Convert the decimal number 167 to binary
Binary (base2) uses only two symbols (1 and 0) instead of base 10.
2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0
128 64 32 16 8 4 2 1
To convert a decimal to number to binary, first find the largest power of 2 that fits into the decimal number.
10100111
In the Cisco hierarchical model, what is the function of the access layer?
Sometime referred to as the desktop layer, the access layer is the point at which users connect to the network, some functions of the access layer include
Connectivity into the distribution layer
Shared bandwidth
MAC address filtering (switching)
Segmentation
Provides a point at which users connect to the network
Security by allowing access lists to further optimize user needs
What is the function of the distribution layer and the Cisco hierarchical model?
Also known as the workgroup layer, the distribution layer is the demarcation point between a network access and core layers. Its primary function is to provide boundary definition and it’s where packet manipulation takes place. Routing,route summarization filtering and WAN access also occur at the distribution layer. The distribution layer determines how packets access the core it is the layer and which policy-based connectivity is implemented.
Collection point for access layer devices
Broadcasts and multicast domains segmentation
Security and filtering services such as firewalls and access list
Provides translation between different media types
InterVLAN routing
Address or area aggregation
What does the application layer of the OSI model do give some examples of this layer?
The application layer is the layer closest to the user this means that it interacts directly with the software application.the application layer’s main function is to identify and establish communication partners determine resource availability and synchronize communication.
Tcp/ip applications telnet, FTP, SMTP, http
What are the four major resources that are shared on a computer network?
The four major resources that are shared on a computer network are as follows:
data and applications :consist of computer data and network aware applications such as an email
Resources: include input and output devices such as cameras and printers
Network storage: consisted of directly attached storage devices physically stores that are directly attached to a computer and a shared server network attached storage
Backup devices:
What for major categories make up the physical components of a network?
The four major categories found in networks are Endpoints Interconnections: NIC cards ect... Switches: Routers
List three categories of network applications?
Three categories of network applications are as follows
batch applications for example FTP T FTP
interactive applications for example database updates inquiries
applications for examples voice and video
What are three types of network monitoring software?
Three types of network-monitoring software are:
Protocol analyzes - capture network packets view what apps on network.
Sniffers-works like wiretaps to observe network communications.
Availability and performance program - use ICMP and SMNP
What are six reasons that the OSI reference model was created
1 different vendor products work together
2 enable the ease of interoperability between standards
3 clarify general functions of networking
4 divide complexity of networking
5 simplify troubleshooting
6 enable developers improve one layer without rewrite entire protocol stack
Show IP OSPF neighbor
Command used to verify and troubleshoot OSPF neighbor relationships
Show IP protocol
Command is a quick way to verify vital OSPF configuration information including the OSPF process ID, route ID, networks the router is advertising, neighbors the router is receiving updates from and default administrative distance which is 110 for OSPF
Show IP OSPF
Command can be used to examine the OSPF process ID and the router ID, In addition this command displays OSPF area information as well and the last time the SPF algorithm was calculated
Show ip OSPF interface
Quickest way to verify Hello and Dead intervals
Show ip route
Command to view the routing table for each router in topology
