ITNW 1425 midterm

On a Linux-based system, what command can be used to display TCP/IP information associated with every interface on the system?

ifconfig

What Windows command can you utilize to display all TCP/IP configuration information for each network adapter installed?

ipconfig

Windows computer on your network are having issues resolving queries for a specific domain, but not other domains. Other computers on the same network resolve the name just fine. What command can you issue that might fix the problem?

ipconfig /flushdns

Convert to binary 28

0 0 0 1 1 1 0 0

Convert to binary 126

0 1 1 1 1 1 1 0

Convert to binary 250

1 1 1 1 1 0 1 0

When planning network cabling, what is the maximum allowable distance that can be used for ethernet cable?

100 meters

Convert to decimal 01110111

119

What IP address would be a loopback IP address?

127.0.0.1

In the classful addressing scheme, what range of network addresses is considered a Class B?

128.0.0.0 to 191.255.0.0

Convert to decimal 10001011

139

Convert to Hex 21

15

Convert to Hex 33

21

Convert to decimal 00111100

60

What is the most popular web server port?

80

Servers that have a NOS installed require less memory, processing power, and storage capacity than clients because servers are called on to handle only light processing loads and requests from multiple clients.

False

The protocol data unit for the Physical layer of the OSI model is payload, or data.

False

UDP provides error checking, but not sequencing. It is also a connectionless protocol.

False

What is the difference between a forwarding and reverse DNS zone?

Forward is used to map host to an IP address, Reverse maps the IP address back to the host

Where is a demarc located in relation to the structured cabling of an enterprise environment?

In the Main Distribution Frame (MDF)

What tasks are handled by a router?

Managing traffic between networks and allows multiple devices to use the same network.

At what layer of the OSI model do the IP, ICMP, and ARP protocols operate?

Network

What is a defining characteristic of a star-topology-based network?

One central server connects all other devices to the network.

Explain the differences between a physical topology and a logical topology.

Physical: You can physically touch wires, cables, and hardware. Logical: How devices appear connected to the user, and cannot physically touch.

At what layer of the OSI do formats like encryption and compression reside?

Presentation Layer

What mail protocol is used to send mail messages to a server?

SMTP

What does TTL mean to network administrators?

Time to live

What is a DNS server?

Translates domain names into IP addresses. Making it possible for DNS clients to reach the server

The TCP and UDP protocols both exist at what layer of the OSI model?

Transport

A binary number is a number written in the base 2 number system.

True

A hexadecimal number is a number written in the base 16 number system.

True

A switch resides at layer 2 of the OSI model. A router resides at layer 3

True

Fiber-optic cable comes in two types: single-mode fiber (SMF) or multimode fiber (MMF).

True

HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at the application layer of the OSI model

True

IP is an unreliable, connectionless protocol, as it does not establish a session to send its packets.

True

TCP uses a three-step process called a three-way handshake to establish a TCP connection.

True

The Border Gateway Protocol is considered to be a hybrid routing protocol.

True

The fundamental difference between a switch and a router is that a switch belongs only to its local network and a router belongs to two or more local networks.

True

The term firmware refers to programs embedded into hardware devices. This software only changes when a firmware upgrade is performed.

True

What is the difference between a WAN, MAN, CAN, and a PAN?

WAN = Wide Area Network MAN = Metropolitan Area Network CAN = Campus Area Network PAN = Personal Area Network

What is the difference between bandwidth and throughput?

Bandwidth is the amount of data that can be transmitted. Throughput is how much data is actually transmitted.

Convert to Hex 193

C1

What is the minimum category of UTP cable required in order to support Gigabit speeds?

Cat5e

What ranges of IP addresses are recommended for use in private networks?

Class A: 10.0.0.0 to 10.255.255.255 Class B: 172.16.0.0 to 172.31.255.255 Class C: 192.168.0.0 to 192.168.255.255

Noise can degrade or distort a signal on a network; what is one well-known cause?

Electromagnetic Interference

What layer of the OSI model describes how data between applications is synced and recovered if messages don't arrive intact at the receiving application?

Session Layer

You are troubleshooting a network issue on a client computer and discover that the network card has an IP address of 169.254.196.200. What does this mean?

The computer is configured to use DHCP, but could not lease an address.