operating systems chp 6 practice questions

You are the network administrator of a branch office of your company. The branch office network is part of a WAN that covers most of the United States. Users have been complaining that they are unable to access resources over the WAN at the main headquarters, You suspect that one of the routers between your office and the main headquarters is not working properly. To troubleshoot the routers, which of the following TCP/IP utilities would be BEST to use?

tracert

You work in an office that uses Linux and Windows servers. The network uses the IP protocol. You are sitting at a Windows workstation. An application you are using is unable to connect to a Windows server named FileSrv2. Which of the following commands would work BEST to test network connectivity between your workstation and the server? Select two.

tracert, ping

which of the following types of internet connection services can allow you to be truly mobile while maintaining your internet connection?

Cellular

A group of workers attend a team-building retreat at a remote cabin. They can place calls on their mobile smartphones, but the cabin has no wired phone, television, or wired internet connectivity. The workers need to access an internet webpage using their laptop computers. Which of the following internet connection types might be available to the workers?

Cellular; a worker may have an embedded cellular adapter or a USB broadband modem (air card). a laptop could be tethered to a mobile phone with a USB cable or bluetooth, or the mobile phone might be able to create a mobile hotspot.

Nate, an employee in your organization, has started to work from home two days a week. Nate uses the same company laptop while working in the office and working at home. Nate's laptop automatically connects to the wireless network in the office, but does not automatically connect to his home wireless network. Nate would like the laptop to connect automatically at home and at work. Which of the following would BEST allows this to happen?

Configure an alternate TCP/IP configuration on the laptop's wireless adapter to use a static IP address that is compatible with the home network; since the emplyee is able to connect in the office, you only need to configure an alternate TCP/IP configuration on the laptop's wireless adapter to use a static IP address.

As the IT technician for your company, you need to ensure that IP addresses are automatically assigned to hosts while at the same time preventing the same address from being assigned twice. Which of the following services would be BEST to use?

DHCP; you can use the Dynamic Host Configuration Protocol (DHCP)to set up a DHCP server that will assign IP addresses to network hosts automatically.

A technician is configuring the static TCP/IP settings on a client computer. Which of the following configurations are needed for internet communications? Select three.

DNS server address, Default gateway address, IP address including a subnet mask (IPv4) or subnet prefix length (IPv6)

Which of the following protocols is used by an email client to retrieve messages from an email server and gives users the option to keep mail messages on the server?

IMAP; IMAP allows a mail server to keep a copy of a user's messages on the server after they are downloaded to the mail client.

You want to use your Windows workstation to browse the web sites on the Internet. You use a broadband DSL connection to access the Internet. Which network protocol must be installed on your workstation to do this?

IP; the IP is the protocol of the internet. If you want to use the Internet, your computer must have the IP protocol installed and configured.

Which of the following are valid IPv6 addresses? select two

141:0:0:0:15:0:0:1, 6384:1319:7700:7631:446A:5511:8940:2552; an !Pv^ IP address is a 12-bit address listed as eight 16- hexadecimal sections.

Which of the following IP address ranges is reserved for automatic private IP addressing?

169.254.0.1 - 169.254.255.254; the Internet Assigned Numbers Authority (IANA) has reserved 169.254.0.1 through 169.254.255.254 for Automatic Private IP Addressing (APIPA)

Given that your windows workstation has Automatic Private IP Addressing (APIPA) implement using default setting, which of the following TCP/IP addresses could be automatically assigned to the system should your DHCP server go down or become inaccessible?

169.254.1.26; the default address range used by APIPA is 169.254.0.1 to 169.254.255.254

which of the following are valid IP addresses?

2.2.2.2 amd 172.16.1.26. A valis IPv4 address consists of four 8-bit (1 byte) numbers are frequently called octets. each octect must contain a number between 0 and 255.

An administrator configures a server to run the TCP/IP suite protocol that allows users to download files contained in specific directories on the server and also protects access to those files by requiring user authentication. Which of the following TCP/IP port numbers allow this protocol to work properly?

20 and 21; the TCP/IP suite protocol that allows users to download files from a server that protects access to the files by requiring user authentication to access specific directories on the server is FTP. FTP uses ports 20 and 21.

While working on a Windows workstation, you've enabled Remote Desktop. Which of the following ports MUST be opened in the server's firewall to allow remote clients to access the desktop?

3389. The RDP protocol runs on port 3389 by default.

To assist a user, a help desk technician is able to take advantage of a windows proprietary network protocol that allows the technician to open a graphical interface to connect with the user's Windows computer. Which of the following TCP/IP port numbers is the default port used by this protocol?

3389; The windows proprietary network protocol that allows the technician to open a graphical interface to connect with the user's Windows computer is Remote Desktop Protocol (RDP). By default, RDP uses port 3389.

While making an online bank transaction, a customer checks to see that the web browser is displaying a lock iron that indicated that an encrypted TCP/IP suite protocol is being used. Which of the following TCP/IP port numbers does this protocol typically use when the browser encrypts its communications with the bank's web server?

443; the TCP/IP suite protocol web browsers use for encrypted communications is HTTPS. HTTPs typically uses port 443.

which of the following are not valid IP addresses?

45.22.156.256, 145.8.260.7, 257.0.122.55; each IP addresses have a value between 0 and 255 with each octet.

You've just installed the DNS service on a Windows server. Which port must be opened in the server's firewall to allow clients to access the service?

53; the DNS service runs on port 53 by default.

Which of the following statements about the DYnamic Host Configuration Protocol (DHCP) are true? select two.

A workstation must request addressing information from a DHCP server. It can deliver a DNS server address in addition to the host IP address; DHCP servers deliver IP addresses as well as other host configuration information to network hosts. DHCP can be configured to assign any available address to a hostm or it can assign a specific address to a specific host.

You have a user who takes his laptop home every day after work. When he's working in the office, the laptop must get an IP address from the DHCP server so you configure it to obtain IP and DNS information automatically. when he's working from home, the laptop must use IP and DNS information that connects with his home network. Which IP addressing method can you use to make sure he gets a network connection at home?

Alternate IP configuration; with an alternate IP addressing configuration, the system's IPv4 Properties are configured on the General tab to use DHCP to automatically obtain TCP/IP configuration information. If a DHCP server cannot be contacted, the static IP configuration information on the IPv4 Properties' Alternate Configuration tab is used.

A Windows workstation is configured to receive its IP configuration information from a DHCP server on the company network. the user at the workstation reports that she cannot use email and is unable to reach the internet. Using the ipconfig command, you see that the workstation has been assigned the following special IP configuration: IP address: 169.254.0.1 Subnet mask: 255.255.0.0 What is this special IP configuration called? Why did the workstation receive this type of configuration?

Automatic Private IP Addressing (APIPA), the workstation was unable to contact the DHCP server; if a windows client is configured to receive an IP address from a DHCP server but cannot contact a DHCP server, it will automatically assign itself an IP address with the range of 169.254.0.1 to 169.254.255.254 with the subnet mask of 255.255.0.0

You are the IT technician for your company, Which of the following mechanisms would BEST allow you to resolve a hostname into its associated IP address? select two

DNS, hosts file; you can use the Domain Name System (DNS) to get the IP address from a given host name. You can also use the local hosts file to map host names into IP addresses.

You want to implement name resolution on the Linux workstations in your company. Which protocol will you use to do this?

DNS; you can use DNS name resolution for Linux workstations . NetBIOS name resolution is typically used on windows-based networks.

A homeowner's connection to the internet is through an always-on modem that connects to existing telephone wiring and has a download speed of over 3 Mbps. The homeowner is able to make analog phone calls over the same wiring at the same time. Which of the following internet connection types is being used?

DSL; Digital Subscriber Line uses a modem that connects to copper telephone lines, allowa the use of the internet and phone calls at the same time

Which TCP/ICP configuration parameter identifies the router that is used to reach hosts on remote networks?

Default gateway; the default gateway identifies the router to which packets for remote networks are sent.

The following is an example of an IPv6 address: FEC0:1319:7700:F631:446A:5511:CC40:25AB Which part of the example IPv6 address is the prefix? Which quartet in the example IPv6 prefix is used to identify the subject? Which part of the example IPv6 address is the interface ID?

FEC0:1319:7700:F631, F631, 446A:5511:CC40:25AB the quartet used to identify the subnet is F631 (the last quartet in the prefix)

Which of the following is a valid IPv6 address?

FEC0::AB:9007; the :: in the address replaces blocks on consecutive 0s.

You want to allow your users to download files from a server running the IP protocol. You want to protect access to the files by requiring the user authentication to access specific directories on the server. Which IP protocol should you implement to provide this capability?

FTP; it enables file transfers and supports user authentication.

Which of the following correctly describe the most common format for expressing IPv6 addresses?

Hexadecimal numbers, 32 numbers, grouped using colons; IP version 6 addresses are made up of 32 hexadecimal numbers organized into eight quartets.

Which of the following network technologies is packaged as part of a BRI plan?

ISDN

A user reports that he can't browse to a specific website on the internet. From his computer, you find that a ping test to the Web server succeeds. A traceroute test shows 17 hops to the destination web server. What is the most likely cause of the problem?

Incorrect DNS server address

You are setting up a small network in your office with one Windows server and 50 Windows workstations. You want to spend as little time as possible configuring the workstations with IP addressing information. What should you do?

Install and configure the DHCP service on your server; The DHCP client on each workstation can then contact the DHCP server when the workstations connect to the network to be automatically assigned IP addressing information.

A SOHO's connection to the internet is through an antenna that sends and receives a microwave signal to the ISP's antenna. There can be no obstacles on the direct path between the two antennae. Which of the following internet connection types is being used?

Line-of-sight wireless; line-of-sight wireless uses microwave or radio frequency signals between two antennae.

To access the internet through the Publicly Switched Telephone Network (PSTN), what kind of connectivity device must you use?

Modem; to establish a connection to the internet through the PSTN/POTS, you must use a modem.

which of the following are features of Basic Rate ISDN (BRI)? select three.

One control channel, Dial-up connection, two data channels

A user in configuring an email client application and plans to use a standard TCP/IP suite protocol to retrieve email messages from an email server. Which of the following TCP/IP suite protocols can be used to retrieve email messages?

Post Office Protocol (POP3), Internet Message Access Protocol (IMAP); Both POP3 and IMAP can be used to retrieve email messages from an email server.

You are configuring an ADSL connection. Which of the following will be part of the configuration? Select two

RJ!! connectors, Filters or splitters;

Match each utility on the left with its corresponding description on the right. Each utility may be used once, more than once, or not at all.

Resolves (looks up) the IP address of the specified hostname. nslookup Tests connectivity between devices and shows the routers in the path between the two devices. tracert sends an ICMP echo request/reply packet to a remote host ping Displays current connections and incoming and outgoing connections netstat a few simple replies to this request from the remote host indicates that a connection exists between sender and receiver. ping Displays active sessions, ports, sockets, and the local routing table. netstat performs a continuous connection test when used with the -t option ping

Which protocol is used to send email messages from a mail client to a mail server?

SMTP; SMTP sends email from a mail client to a mail server.

What is the name of the utility that is (1 similar to Telnet and (2 used to establish a secure remote server management session?

SSH

Match each port number on the left with its associated protocols on the right.

Secure Shell(SSH)-22 Apple Filling Protocol(AFP)-548 HTTP over SSl(HTTPS)-443 Hypertext Transfer Protocol(HTTP)-80 Server Message Block (SMB/CIFS) directly over TCP-445 Service Location Protocol(SLP)-427 Internet Message Access Protocol(IMAP)-143

a host on your network that provides a service that requires the server to always use the same IP address. Which IP addressing method can you use to manually assign the specific IP address?

Static IP addressing; static IP addressing allows you to manually assign all configuration values.

While setting up a home office, a technician disables the DHCP service on the office router, but does not want to rely on link-local addressing. Which of the following IP addressing methods should be used?

Static; to avoid link-local addresses when DHCP addressing is unavailable, static addresses should be assigned to all devices that will communicate on the local network.

You are an IT technician for your company and would like to be able to: establish a remote server management session send unencrypted (clear text) transmissions to the remote server manage specialized industrial and scientific devices. Which of the following utilities would be the BEST to use to accomplish these tasks?

Telnet

Which of the following tools allow remote server management? select two

Telnet, SSH; both telnet and SSH are tools for remote server management.

Which of the following identifies the Interface ID component of an IPv6 address? select two.

The last 64 bits of an IPv6 address, the last four quartets of an IPv6 address; an IPv6 address is a 128-bit binary number that uses the first 64 bits as the address prefix and the last 64 bits of the address as the interface ID.

You are a software developer, and you are creating a multimedia streaming application. Data will be streamed from your streaming server to streaming clients over IP networks. Which transport protocol should your application use to send data between the clients and the server?

UDP; The User Diagram Protocol (UDP) can be used with the IP protocol to create unacknowledged connections between the server application and it's clients. Because the packets are sent unacknowledged, latency will be dramatically reduced, providing better streaming performance.

Which of the following are options for connecting a computing device, such as a notebook computer or a tablet, to a cellular network? Select four

Use a USB cable to connect the device to the network through a smartphone, Use a USB cellular antennae to connect the device directly to the cellular network, Use the device's Wi-Fi to connect to the network through a cellular Wi-Fi hot spot, Use an integrated cellular antennae to connect the device directly to the cellular network

You are talking with a customer support technician on the telephone. The technician recommends downloading a particular driver from the internet. When you try to connect to the internet using your dial-up modem, you can't. What is the problem?

You need to hang up; you cant talk on the telephone over the same line that the modem needs to use.

Which type of network medium is used by an Integrated Services Digital Network (ISDN) adapter?

copper telephone wire; ISDN is a set of standards that allow digital data to be sent and received over copper wiring

after several new computers are connected to a network device, every computer connected to the device begins to experience slow transfer speeds. Which of the following is the FIRST step in troubleshooting this problem?

determine whether the network device is a hub or a switch

Which of the following describes an IPv6 address? select two.

eight hexadecimal quartets, 128-bit address; IP version 6 addresses are 128-bit addresses.

Which of the following utilities can you use from the command line on a Linux system to see a list of the installed network interfaces along with their current statuses and configurations?

ifconfig; ifconfig is used on Linux (and Mac OS) systems to display the installed network interfaces, their current status, and the current configuration settings for each interface

Which actions allow you to access the internet on your laptop via a cellular network?

insert a cellular USB adapter in an open port on the laptop

You are troubleshooting network connectivity issues on a Windows workstation. Which command would you use to view the MAC address of the network adapter?

ipconfig /all

You need to view detailed IP configuration information on Windows workstation. In addition to the IP address, subnet mask, and default gateway configuration, you need to see the network card's MAC address and the addresses of the DHCP and DNS servers the workstation is communicating with. What command would you enter at the command line to see this detailed information? _______ When you see the address of the DNS server, you realize that this information needs to be updated. Earlier in the day, you implemented a new DNS server with a new IP address. The workstation will update this information in 24 hours. What command can you enter at the command line to update the DNS server information right away?

ipconfig /all, ipconfig /flushdns

You are the computer specialist in a small business. Your company server is named FS1 and has an IP address of 10.0.0.2. The hardware in your company server started to experience intermittent failures, so you transferred the shares on the server to a spare server and took the main server offline. The spare server has an IP address of 10.0.0.3. You edit the ecisting A record for FS1 on your company's DNS server and redirect the hostname to the spare server's IP address of 10.0.0.3. Enter the command you can run from the command prompt on these workstations that will allow them to access the shares on FS1 without performing a full restart.

ipconfig /flushdns

Which utility would you use to view current connections and active sessions and ports on a computer?

netstat

A user is having problems connecting to other computers using hostnames. Which of the following commands will BEST help you troubleshoot this problem?

nslookup

Examine the following output: Server: helicuplar.xct.takro.net Address: 209.53.4.130 Name: westsim.com Address: 64.78.193.84 which command produced this output?

nslookup; nslookup is a tool that allows you to send manual DNS resolution requests to a DNS server.

a healthcare organization provides mobile clinics throughout the world and needs to transfer patient's statistical data to a central database via the internet. Which network technology should you select to ensure network connectivity for any clinic located anywhere in the world, even remote areas?

satellite; satellite capability is available even in areas that do not have a local network infrastructure.

Which of the following identifies the prefix component of an IPv6 address? select two.

the first four quartets of an IPv6 address, the first 64 bits of an IPv6 address; an IPv6 address is an 128-bit binary number that uses the first 64 bits as the address prefix

Which of the following describes the part of the IPv6 address that identifies the subnet address?

the last quartet in the IPv6 address prefix

You are installing a satellite connection so your home office can connect to the internet. Which of the following statements is true?

the satellite dish must be pointed in the correct direction for communicating with the satellite;

Examine the following output: 4 22 ms 21 ms 22 ms sttlwa01gr02.bb.ispxy.com [154.11.10.62] 5 39 ms 39 ms 65 ms plalca01gr00.bb.ispxy.com [154.11.12.11] 6 39 ms 39 ms 39 ms Rwest.plalca01gr00.bb.ispxy.com [154.11.3.14] 7 40 ms 39 ms 46 ms svl-core-03.inet.ispxy.net [205.171.205.29] 8 75 ms 117 ms 63 ms dia-core-01.inet.ispxy.net [205.171.142.1] which command produced this output?

tracert