Domain 1.1: Networking Concepts

Which port numbers are used by DHCP by default?

67 && 68.

To download files from a UNIX server which utility would you use? A) FTP B) Ping C) UTP D) DLD

A) FTP

Which terminal services protocol was designed to be able to remotely display and provide interaction with applications running on a remote windows computer? A) RDP B) PTP C) PPoE D) DTS

A) RDP - Remote Desktop Protocol.

Which protocol defines the standard packet format for VoIP transmissions on IP networks? A) RTP B) NTP C) QoS D) TLS

A) RTP - Real-Time Transport Protocol provides end-to-end real-time transfer of streaming media.

Which of the following protocols is used for transporting email? (Choose two) A) SMTP B) POP3 C) X.500 D) MIME E) X.25

A) SMTP B) POP3

Which of the following defines the standard for email? A) SMTP B) DHCP C) FTP D) RIP

A) SMTP - is the standard protocol for handling e-mail.

Which two protocols utilize the same port for communication? A) SSH B) DNS C) SMTP D) SFTP E) FTP

A) SSH && D) SFTP

Which of the following is the primary TCP/IP Transport Layer Protocol? A) TCP B) UDP C) SPX D) RIP

A) TCP - Transmission Control Protocol (TCP) is the data protocol in the TCP/IP suite that provides reliable transmission of data.

Which of the following are connectionless protocols? (Choose two) A) TFTP B) FTP C) NetBEUI D) UDP E) TCP F) SPX

A) TFTP D) UDP These are connectionless, opting for speed over guaranteed delivery.

If you are able to use FTP, this verifies that which transport protocol is functioning? A) IP B) IPX C) TCP D) NWLink

C) TCP - FTP teams up with telnet to transparently log you onto the FTP server then provides for the transfer of files.

Which of the following would you use to log onto a remote computer and use it as if you were phyiscally logged on to the Computer? A) FTP B) HTTP C) Telnet D) POP3

C) Telnet

Which port numbers are used by FTP by default?

20 && 21

Which protocols are in the TCP/IP Suite? (choose three) A) Netbeui B) IP C) DHCP D) HTTP E) IPX F) SPX

B) IP C) DHCP D) HTTP

In an email system, which of the following is the location of all user messages? A) Directory Assistance B) Post Office C) E-mail Client D) Message Transfer Agent.

B) Post Office - The POP server is where inbound email waits until retrieved by the user.

You're attempting to select a signaling protocol for your company's network because you're about to upgrade to a VoIP system. You need to keep it simple because this is a small company with a simple network. Which protocol should you use? A) H.323 B) SIP C) MGCP D) Megaco

B) SIP (Session Initiation Protocol) - SIP uses fewer instructions to control a call and consumes fewer processing resources than H.323.

Which of the following services uses TCP? A) DHCP B) SMTP C) IMAP D) HTTP E) TFTP F) POP

B) SMTP C) IMAP D) HTTP F) POP

Which of the following can use TCP and UDP, permits authentication and secure polling of network devices and allows for automated alerts and reports on network devices? A) DNS B) SNMP C) SMTP D) TCP

B) SNMP - Version 3 Simple Network Management Protocol (SNMP) allows for a connection-oriented service, authentication and secure polling of network devices with alerts and reports on network devices.

The SNMP protocol has had two additional capabilities added since its inception. They are GetBulkRequest and Inform Request. Which revision was the first to implement these capabilities? A) SNMPv1 B) SNMPv2 C) SNMPv3 D) None of these are correct responses.

B) SNMPv2

H.323 is a protocol suite that operates primarily at the ________ layer of the OSI model. A) Application B) Session C) Transport D) Network

B) Session - Although H.323 is a multilayer protocol suite, it manages the operations at the Session layer.

Which transport protocol would be validated by successfully using FTP? A) IP B) TCP C) UDP D) ICMP

B) TCP (Transmission Control Protocol)

You are preparing for some of the company's executives to have a video conference with a partner in the U.K. using NetMeeting, which port will be used for call setup? A) Dynamic B) 1502 C) 1720 D) 1731

C) 1720 - Net meeting uses H.323 standards. The H.323 protocol handles call setup on port 1720, and dynamic ports for streaming and call control. The H.323 protocol is based on the T.120 protocol, which uses port 1503.

You are addressing a remote desktop issue where a user can't connect to the server. You find the problem. The client is using port 389 for RDP. What action should you take? A) Change client RDP port to 839. B) Change client RDP port to 3839. C) Change client RDP port to 3389. D) Change client RDP port to 636.

C) Change client RDP port to 3389. RDP uses port 3389 by default. The client should be configured to use that port. The port currently in use may interfere with LDP authentications and ILS operation.

Which protocol allows the browser to access the web server? A) NMTP B) SMTP C) HTTP D) HTML

C) HTTP

When a packet reaches a point where no further routing is possible the packet is dropped and a message is returned. Which protocol is used to report this error? A) EGP B) IGP C) ICMP D) BGP

C) ICMP - Internet Control Message Protocol is a network layer protocol used by network devices to diagnose network communication issues

Which of the following provides a connectionless datagram service and functions at the network layer? A) TCP B) UDP C) IP D) RIP

C) IP - Network layer protocol that supports both connection-oriented and connectionless services from higher-layer protocols.

Which protocol is used for clock synchronization on a packet switched network? A) SIP B) ARP C) NTP D) SMB

C) NTP (Network Time Protocol) - Uses port 123 on packet switched networks to keep system clocks accurate to within a few milliseconds.

You need to establish a secure communication port using HTTP in contrast to the unsecured port 80. What port number should be the default choice? A) 8080 B) 8000 C) 443 D) 3389

C) Port 443 is used for HTTPS.

A common language or common rules that computers use to communicate is called? A) Architecture B) Topology C) Protocol D) Standard

C) Protocol - Protocols are the language used on the network.

To identify resources by location on the internet, you would use which addressing feature? A) HTTP B) HTML C) URL D) FAT

C) URL - When the browser user enters file requests by either "opening" a web file (typing in URL) or clicking on a hypertext link, the browser builds an HTTP request and sends it to the Internet Protocol address indicated by the URL.

HTTP (Hypertext Transfer Protocol) is used to _________. A) Create WEB pages. B) Develop a performance baseline of the network. C) Control system monitoring. D) Communicate between web browsers and web servers.

D) Communicate between web browsers and web servers. (Can be used to transfer files such as text and graphic files.)

Which mail protocol allows for messages to be stored centrally and will remain on the server by default if a user deletes them on the local machine? A) POP B) POP3 C) IMAP D) IMAP4

D) IMAP4 - Allows for centralized message management on the server. Messages will remain on the server unless for example, the user configures their email client to delete them when certain criteria are met.

Which of the protocols would be MOST useful when synchronizing times between client and server? A) SIP B) ARP C) TLS D) NTP

D) NTP - Network Time Protocol (used to synch time between computers.)

Which protocol does UNIX use for mail transfer? A) SNMP B) NNTP C) STTP D) SMTP

D) SMTP (Simple Mail Transfer Protocol)

For a unit of data being sent through the seven-layer OSI model, which term would be accurate to describe the information as it is passed from Layer 1 (physical) to Layer 4? A) Frame B) Chunk C) Packet D) Segment

D) Segment - PDU Begins at Physical layer (layer 1) where it is a series of bits. At Data link (layer 2), it becomes a frame, at the network layer (layer 3) it becomes a packet, and at the transport layer (layer 4) it becomes a segment passed to the upper layers.

Comparing below protocols and ports, which layer 4 protocol is used for Telnet and what is the default port assigned? A) IP, 6 B) TCP, 22 C) UDP, 23 D) TCP, 23

D) TCP, 23 - Telnet uses TCP which is a layer 4 Transport protocol with the default port number 23.

You want your webserver to have complete Internet Capability and permit FTP traffic only on its default ports. In the network diagram shown deploy the rules that would be added or modified on your firewalls to accomplish this. A label can be used more than once and all fields may, or may not have an appropriate label. A) Allow - tcp - 21 > 133.31.3.66 B) deny all C) allow -tcp/udp - 433 > 133.31.3.66 D) allow - tcp/udp - 80 > 133.31.3.66 E) allow all F) allow - tcp - 30 > 133.31.3.66

Internet > Firewall 1 > DNS Server (133.31.3.65) > Web Server (133.31.3.66) > Firewall 2 > LAN Position 1) allow - tcp - 30 > 133.31.3.66 Position 2) allow - tcp 21 > 133.31.3.66 Position 3) allow - tcp/udp - 80 > 133.31.3.66 Position 4) allow - tcp/udp - 443 > 133.31.3.66

You get a call from a user reporting that your externally hosted email server is down. In normal operation POP3, IMAP, and SMTP are supported. In the network diagram shown deploy the rules that would be added or modified on your firewalls to accomplish this. A label maybe used more than once and all fields, may or may not have an appropriate label. A) Allow - tcp/udp - 110 B) Allow - tcp/udp - 25 C) Allow - tcp - 143 D) Allow all E) Allow - tcp/udp - 110 > 133.31.3.66 F) Allow - tcp/udp - 25 >133.31.3.66 E) Allow - tcp - 143 > 133.31.3.66

Internet > Firewall 1> DNS Server (133.31.3.65) > Email Server (133.31.3.66) > Firewall 2 > LAN 1) Allow - tcp/udp - 25 2) Allow - tcp/udp - 110 3) Allow - tcp - 143 4) Allow - tcp/udp - 25 >133.31.3.66 5) Allow - tcp/udp - 110 > 133.31.3.66 6) Allow - tcp - 143 > 133.31.3.66

What port is SNMP?

Port 161

What is the default port for FTP?

Port 21

What Port is SSH?

Port 22

What Port is Telnet?

Port 23

What port is DNS?

Port 53

What is the default port for HTTP?

Port 80

Which Protocol is the standard that defines how enabled devices communicate? It can manage devices and it also defines the messaging type. A) SNMP B) SMTP C) TMP D) OTMP

SNMP (Simple Network Management Protocol)