Networks
51 questions · IT Passport
Which of the following is an appropriate explanation of the routing function of a router, which is a device constituting a network?
Which of the following is used for communication in activities such as the gathering of data from IoT devices, and has wide range and power saving characteristics that enable wireless communication over a distance of tens of kilometers?
On computers on the Internet, a range of application programs such as web and e-mail run, and a communications protocol in the application layer that corresponds to each application program is used. Which of the following is a communications protocol that is in a lower layer than these communications protocols, and is commonly used to implement basic communications functions?
Mr. A specified destination addresses as below and sent an e-mail. Among the descriptions concerning recipients of the e-mail, which of the following lists all and only the appropriate descriptions?
[Destination addresses]
To: Mr. B’s e-mail address
Cc: Mr. C’s e-mail address
Bcc: Mr. D’s e-mail address, Mr. E’s e-mail address
Among the descriptions from A through C, which of the following is the list that contains all and only appropriate features of VPN?
Three (3) PCs and an Internet-capable TV (television) set are to be connected to the Internet by using a hub and a router that has a firewall function. Which of the following is an appropriate connection that enables the firewall function of the router to be used for all the traffic between the devices and the Internet? Here, “FW” in each figure indicates the firewall function.
Which of the following is an appropriate example of an IPv4 IP address that is assigned to a PC?
Mr. A sent an e-mail to the three (3) people Mr. P, Mr. Q, and Mr. R. He entered Mr. P’s e-mail address in the To field, Mr. Q’s e-mail address in the CC field, and Mr. R’s e-mail address in the BCC field. Which of the following is the appropriate description concerning the three (3) recipients of the e-mail?
Which of the following is a technology that is used to make voice calls over the Internet by two (2) parties using the same application on their smartphones or other devices?
Which of the following is the appropriate explanation of the POP communications protocol?
Which of the following mobile communication systems not only offers higher communication speed than LTE, but also allows more devices to connect and has less lag time?
When an e-mail is sent to multiple recipients, there are cases that no recipient of the e-mail should know the e-mail addresses of other recipients. In such cases, which of the following is an appropriate place where the e-mail addresses of the multiple recipients are entered?
When a web page with URL “http://srv01.itpec.org/abc.html” is accessed on the Internet, what does “srv01” in the URL stand for?
A large number of IP addresses are required in order to connect a massive number of IoT devices to the Internet, so the decision was made to use the Internet Protocol with IP addresses that have a length of 128 bits. Which of the following is this protocol?
Which of the following is the appropriate combination of terms or phrases to be inserted into blanks A and B in the description below concerning NAT?
NAT is often used when an office or a household LAN is connected to the Internet, and it converts between A and B.
When another network such as the Internet is accessed from a network in an office or a household, which of the following fulfills the role of an entrance or an exit to the other network?
When transmitted over the Internet, data is divided into blocks, each of which is transmitted with a header that specifies the destination, the block number, and an error detecting code. Which of the following is the term for such blocks of data?
A DHCP server has been installed in a LAN. When a PC that automatically acquires information from the DHCP server is to be connected to the LAN, which of the following will be set in the PC?
Which of the following is an appropriate combination of the protocols that are used for transmitting and receiving e-mail as shown in the diagram below?
Which of the following is a mechanism by which, if an e-mail is sent to a specific e-mail address, the e-mail with the same content is distributed to multiple e-mail addresses that have been registered to the specific address?
Among the cases of communication between PCs, servers, communication devices, printers, and other devices, which of the following needs to use a WAN?
Which of the following is the mechanism that determines the correspondence between domain names and IP addresses on the Internet?
Which of the following is the term that describes a network device copying a packet and sending it to multiple destinations?
Which of the following is a wireless network that is used for IoT systems, and has power saving properties that enable operation for more than several years with a general battery and wide area properties that enable communication over a maximum distance of tens of kilometers?
Which of the following is a protocol that is used for synchronization of the internal clock of a computer via a network with a server that holds a reference clock?
When setting up PC1 for connecting it to the Internet, an IP address is set in “default gateway” that is one of the network settings of PC1. Which of the following devices has this IP address?
Mr. A specifies the destinations for an e-mail as below and sends it. Mr. Y receives this e-mail, and sends a reply to all the recipients and the sender listed in the received e-mail. Among Mr. A, Mr. X, and Mr. Z, which of the following is the list that includes all and only the destinations of the e-mail that Mr. Y sends?
[Destinations specified for Mr. A’s e-mail]
To: X
CC: Y
BCC: Z
Which of the following is an appropriate explanation of SSID that is used in wireless LANs?
Which of the following is an appropriate description concerning communications protocols?
When Mr. A sent an e-mail to Mr. X, he decided to also send it to Mr. Y and Mr. Z for reference. However, Mr. A did not want Mr. X nor Mr. Y to know that it was sent to Mr. Z. In such a case, which of the following is the appropriate combination of recipients to specify?
Which of the following is the appropriate description concerning the function of a DNS?
Which of the following is the appropriate combination of terms or phrases to be inserted into blanks A through C in the description below concerning networks?
A network of a relatively small area that is installed in the building, etc. is called A, and a network connecting A that are installed at geographically distant points is called B. Generally, for the IP addresses set in the devices that are connected to A, C can be used freely if A is a closed network within the organization, etc.
Mr. A sent an e-mail to the three (3) people Mr. P, Mr. Q, and Mr. R. He entered Mr. P’s e-mail address in the To field, Mr. Q’s e-mail address in the CC field, and Mr. R’s e-mail address in the BCC field. Among the recipients of the e-mail Mr. P, Mr. Q, and Mr. R, which of the following lists contains all and only the people who can know that the e-mail with the same content is sent to all three (3) people?
Which of the following is the appropriate description concerning a wireless LAN?
Mr. A sent an e-mail message to the recipients below. Which of the following is an appropriate explanation of the information that the recipients of the message can determine?
Which of the following is an appropriate description of LTE in wireless communications?
Among the examples of conducting communication between a PC, a server, a communication device, a printer, etc., which of the following is the list that contains all and only the examples that require the use of a WAN?