Network Operations (1) Flashcards
Which of the following is the term usually applied to a representation of network devices, automatically compiled, and containing information such as IP addresses and connection speeds?
Network map
Network diagram
Cable diagram
Network map
A network map is a depiction of network devices, not drawn to scale, with additional information added, such as IP addresses and link speeds. In most cases, network maps are automatically created by a software product, such as Nmap, that scans the network and creates a display from the information it discovers. The term network diagram is most often used to refer to a manually created document containing pictograms of network devices, with lines representing the connections between them. The diagram might be roughly similar to the actual layout of the site, but it is usually not drawn to scale. A cable diagram is a precise depiction of the cable runs installed in a site. Often drawn on an architect’s plan or blueprint, the cable diagram enables network administrators to locate specific cables and troubleshoot connectivity problems. A management information base (MIB) is a component of an SNMP-based network management system that contains information about only one device; it does not depict all of the devices on the network
Which of the following types of network documentation is often overlaid on an architectural drawing or blueprint?
Network map
Network diagram
Cable diagram
Cable diagram
A cable diagram is a precise depiction of the cable runs installed in a site. Often drawn on an architect’s plan or blueprint, the cable diagram enables network administrators to locate specific cables and troubleshoot connectivity problems. A network map is a depiction of network devices, not drawn to scale, with additional information added, such as IP addresses and link speeds. In most cases, network maps are automatically created by a software product, such as Nmap, that scans the network and creates a display from the information it discovers. The term network diagram is most often used to refer to a manually created document containing pictograms of network devices, with lines representing the connections between them. The diagram might be roughly similar to the actual layout of the site, but it is usually not drawn to scale. A management information base (MIB) is a component of an SNMP-based network management system that contains information about only one device; it does not depict all of the devices on the network
Which of the following is not one of the typical heights for devices mounted in IT equipment racks?
1 unit
2 units
3 units
3 units
Devices designed to fit into IT equipment racks typically have heights measured in units. One unit equals 1.75 inches. Most rack-mounted devices are one (1U), two (2U), or four units (4U) tall
The cable plant for your company network was installed several years ago by an outside contractor. Now, some of the paper labels have fallen off your patch panels, and you do not know which wall plate is connected to each port. Assuming that you are working on a properly maintained and documented network installation, which of the following is the easiest way to determine which port is connected to which wall plate?
Consult the cable diagram provided by the cabling contractor at the time of the installation.
Call the cable installation contractor and see if he or she can remember which ports go with which wall plates.
Attach a tone generator to a patch panel port and then test each wall plate with a locator until you find the correct one. Repeat for each port that needs labeling.
Consult the cable diagram provided by the cabling contractor at the time of the installation.
A reputable cable installer should supply a cable diagram that indicates the locations of all the cable runs on a plan or blueprint of the site. You should be able to use this to determine which ports go with which wall plates. A busy cable installer is unlikely to remember specific details about an installation performed years ago. Using a tone generator and locator is an effective way to associate ports and wall plates, but it can be incredibly time-consuming and is certainly not the easiest method. A cable certifier can test the cable run for faults, measure its length, and perform other tests, but it cannot specify which wall plate goes with which port, unless you entered that information yourself earlier
Which of the following IT asset management documents published by the International Organization for Standardization (ISO) defines a standard for software identification tags (SWIDs) containing inventory information about the software running on a computer or other device?
ISO 19770-1
ISO 19770-2
ISO 19770-3
ISO 19770-2
ISO 19770 is a family of IT asset management (ITAM) standards that defines procedures and technology for the management of software and related assets in a corporate infrastructure. ISO 19770-2 defines the creation and use of SWID tags, which are XML files containing management and identification information about a specific software product. The other standards define other ITAM elements, such as compliance with corporate governance (ISO 19770-1) and resource utilization measurement (ISO 19770-4)
Which of the following are places where network wiring connections are found? (Choose all correct answers.)
MDF
MTBF
IDF
RDP
MDF
IDF
A large enterprise network will—at minimum—have demarcation points for telephone services and a connection to an Internet service provider’s network. In many cases, these services will enter the building in the same equipment room that houses the backbone switch. This room is then called the main distribution frame (MDF). An intermediate distribution frame (IDF) is the location of localized telecommunications equipment such as the interface between the horizontal cabling and the backbone. Mean Time Between Failures (MTBF) and Remote Desktop Protocol (RDP) are not locations of network wiring
A rack diagram is typically ruled vertically using which of the following measurements?
Inches
Centimeters
Units
Units
Rack diagrams use vertical measurement called units, each of which is 1.75 inches. Most rack-mounted devices are one (1U), two (2U), or four units (4U) tall
Which of the following statements about the differences between a diagram of a patch panel installation organized physically and one that is organized logically are true? (Choose all correct answers.)
A physical diagram is organized according to the floors and rooms where the cable drops are located.
A physical diagram is precisely scaled to represent the actual patch panel hardware.
A logical diagram is organized according to the divisions within the company, such as departments and workgroups.
A logical diagram uses an organization that represents company divisions but does not physically resemble the actual patch panels.
A physical diagram is organized according to the floors and rooms where the cable drops are located.
A logical diagram is organized according to the divisions within the company, such as departments and workgroups.
A physical diagram, in this case, represents the actual physical locations of the cable drops connected to the patch panels. A logical diagram uses artificial division that corresponds to the organization of the company
A diagram of a telecommunications room or intermediate distribution frame (IDF) for an office building is typically based on which of the following?
A hand-drawn sketch
A series of photographs
An architect’s plan
An architect’s plan
IDF diagrams should be based on an architect’s plan whenever possible so that actual lengths and locations of cable runs can be documented. In situations where an architect’s plan is not available, a detailed sketch, drawn to scale, can be acceptable. Photographs and models are impractical for this purpose
The documentation for main distribution frames (MDFs) and intermediate distribution frames (IDFs) should incorporate details on which of the following elements? (Choose all correct answers.)
Power
Environment
Distances
Costs
Power
Environment
Distances
MDF and IDF documentation should take into account the power sources available at the locations, the environmental equipment needed to keep the temperature and humidity levels under control, and the distances that the cable runs must span. This type of documentation is typically used for installation and troubleshooting purposes, so the costs of components and services are unnecessary and can be dealt with elsewhere
Which of the following, originally created for the UNIX sendmail program, is now a standard for message logging that enables tools that generate, store, and analyze log information to work together?
Syslog
Netmon
Netstat
Syslog
Syslog is a standard designed to facilitate the transmission of log entries generated by a device or process, such as the sendmail SMTP server, across an IP network to a message collector, called a syslog server. Network Monitor (Netmon) is a protocol analyzer. Netstat is a program that displays status information about a system’s network connections. Top is a utility to display system processes. None of these provide logging services
At what point in the installation process should patch panel ports and wall plates be labeled?
When the patch panels and wall plates are installed
When a length of cable is cut from the spool
When the cables are attached to the connectors
When the cables are attached to the connectors
Patch panel ports and wall plates should be labeled when the cable runs are attached to them. Labeling them at any earlier time can result in cable runs being connected incorrectly
Which of the following is the term used to describe a wiring nexus that typically the termination point for incoming telephone and wide area network (WAN) services?
MDF
MTBF
IDF
MDF
A large enterprise network will—at minimum—have demarcation points for telephone services and a connection to an Internet service provider’s network. In many cases, these services will enter the building in the same equipment room that houses the backbone switch. This room is then called the main distribution frame (MDF). An intermediate distribution frame (IDF) is the location of localized telecommunications equipment such as the interface between the horizontal cabling and the backbone. Mean Time Between Failures (MTBF) and Remote Desktop Protocol (RDP) are not locations of network wiring
Your department is experiencing frequent delays as users wait for images to render using their outdated graphics software package. As a result, you are planning to submit a change request for a new software product at the monthly meeting of the company’s change management team. Which of the following types of information are likely to be included in your request? (Choose all correct answers.)
The possibility of rolling back to the previous software, if necessary
The procedure for installing and configuring the new software
An estimate of the productivity increase realizable with the new software
A list of software and hardware upgrades or modifications needed to run the new software
The possibility of rolling back to the previous software, if necessary
The procedure for installing and configuring the new software
An estimate of the productivity increase realizable with the new software
A list of software and hardware upgrades or modifications needed to run the new software
A change management team typically requires thorough documentation for all requested changes, specifying exactly what is needed; how the change will affect the current workflow, both to the direct recipients of the change and the rest of the organization; and what ramifications might come from the change
A rack diagram is typically ruled into vertical rack units, which are standard-sized divisions that hardware manufacturers use when manufacturing rack-mountable components. Which of the following is the standard vertical height of a single rack unit?
- 721 inches
- 75 inches
40 mm
1.75 inches
A single rack unit is 1.75 inches, or 44.5 mm. Option A, 1.721 inches, is the height used for many components that are one rack unit tall, leaving a small space between components for easy insertion and removal
