Q&A Hero

Q: At what layer would you find frames? A) 1 B) 2 C) 3 D) 4

Q: At what layer would you find packets? A) 1 B) 2 C) 3 D) 4

Q: At what layer would you find EUI-48 addresses? A) 1 B) 2 C) 3 D) 4

Q: At what layer would you find IP addresses? A) 1 B) 2 C) 3 D) 4

Q: If a frame passes through two routers between the source and destination hosts, how many routes will there be? A) 1 B) 2 C) 8 D) 9

Q: If a frame passes through eight switches between the source and destination hosts on a single network, how many data links will there be? A) 1 B) 2 C) 8 D) 9

Q: If a frame passes through seven switches between the source and destination hosts, how many physical links will there be? (Careful!) A) 1 B) 6 C) 7 D) 8

Q: The source host and destination host are separated by seven networks. There will be seven ________. A) packets B) frames C) physical links D) none of the above

Q: If two hosts are separated by seven networks, how many frames will there be along the way when a host transmits a packet to another host? A) 1 B) 2 C) 7 D) 14

Q: If two hosts are separated by seven networks, how many packets will there be along the way when a host transmits a packet to another host? A) 1 B) 2 C) 7 D) 14

Q: When a packet travels through an internet, there are usually ________. A) more data links than routes B) exactly the same number of data links and routes C) approximately the same number of data links and routes D) more routes than data links

Q: The path that a frame takes across a single network is a ________. A) physical link B) data link C) route D) all of the above

Q: The path that a packet takes across an internet is a ________. A) physical link B) data link C) route D) all of the above

Q: When an application program transmits a message, what will the SECOND field be in the message that is sent over the transmission link? A) application header B) packet header C) transport header D) frame header

Q: When an application program transmits a message, what will the first field be in the message that is sent over the transmission link? A) application header B) packet header C) transport header D) frame header

Q: ________ are carried inside ________. A) Packets, frames B) Frames, packets C) Frames, application message segments D) Packets, application message segments

Q: Single network addresses in different single networks are ________. A) unique B) unique if the two single networks use the same technology standard C) both A and B D) neither A nor B

Q: In Internets, different networks are connected by ________. A) switches B) routers C) PCs D) hot spots

Q: What device connects different networks into an Internet? A) router B) workgroup switch C) Network Access Point D) core switch

Q: In hybrid Ethernet802.11 networks, wireless clients use the Ethernet network to gain access to ________. A) internal servers B) their access point C) both A and B D) neither A nor B

Q: In switched networks, to what device is a frame addressed? A) the destination host B) switches C) both A and B D) neither A nor B

Q: An individual switch knows the frame's entire ________. A) session B) data link C) route D) none of the above

Q: Switches make decisions based on the ________. A) physical link address B) source data link layer address C) destination data link layer address D) phase of the moon

Q: In a single network transmission, there is always ________. A) a single frame B) a single data link C) both A and B D) neither A nor B

Q: 802.11 data link layer standards govern ________. A) frame organization B) access point operation C) both A and B D) neither A nor B

Q: PPP is standardized at the ________ layer. A) physical B) data link C) Internet D) transport

Q: At what layer(s) do you find single network standards? A) Layer 1 B) Layer 2 C) both A and B D) neither A nor B

Q: The second-lowest standards layer is the ________ layer. (Read the question and answers carefully.) A) physical B) data link C) Internet D) none of the above

Q: At what layer are frames standardized? A) physical B) data link C) Internet D) all of the above

Q: At what layer do you find EUI-48 addresses? A) physical B) data link C) Internet D) two or more of the above

Q: Data link layer standards govern ________. A) switch operation B) frame organization C) both A and B D) neither A nor B

Q: Data link layer standards govern ________. A) connectors B) frame organization C) both A and B D) neither A nor B

Q: All single network addresses are ________ addresses. A) EUI-48 B) IP C) both A and B D) neither A nor B

Q: The most widely used single network address is the ________. A) EUI-48 address B) MAC address C) IP address D) PPP address

Q: Multiplexing ________. A) reduces cost B) increases transmission speed C) both A and B D) neither A nor B

Q: When messages of different users share a transmission line, this is ________. A) fragmentation B) packetization C) multiplexing D) parallel transmission

Q: If a transmission link has a relatively high error rate, ________. A) fragmentation is likely to reduce delivery time for the entire application message B) fragmentation is likely to increase delivery time for the entire application message C) either A or B D) neither A nor B

Q: Dividing an application message into a series of smaller message segments is called ________. A) fragmentation B) packetization C) serialization D) multiplexing

Q: Writing 37kbps properly in metric notation would be ________. A) 37 bps B) 3700 bps C) 37,000 bps D) 37,000 Mbps

Q: Writing 37,400 Mbps properly in metric notation would be________. A) It is written properly. B) 37.4 kbps C) 37.4 Mbps D) 37.4 Gbps

Q: 0.02 Gbps can also be written as ________. A) 2 Mbps B) 20 Mbps C) 200 Mbps D) none of the above

Q: 7,000 bps can also be written as ________. A) 7 Kbps B) 7 Mbps C) 7 Gbps D) none of the above

Q: 200,000M bits per second is ________. A) 200 Kbps B) 200 Mbps C) 200 Gbps D) none of the above

Q: 20,000 bits per second is ________. A) 20 Kbps B) 20 Mbps C) 20 Gbps D) none of the above

Q: 320,000 kbps is ________. A) 320 bps B) 320 Mbps C) 320 Gbps D) none of the above

Q: Network speeds usually are measured in ________. A) bits per second B) bytes per second C) both A and B D) neither A nor B

Q: Guarantees by a provider to meet certain delivery quality specifications are called ________. A) speed quality guarantees B) service level agreements C) service warranties D) contracts

Q: Cloud customers are concerned that ________. A) their data might be hacked B) the government may access their data secretly C) both A and B D) neither A nor B

Q: In SaaS, the user normally ________. A) purchases software B) pays for software by amount of use C) both A and B D) neither A nor B

Q: When a cloud client customer moves from one machine to another machine, ________. A) the same data files are available B) the same application software personalization is in effect C) both A and B D) neither A nor B

Q: An IaaS provides ________. A) servers B) application programs C) both A and B D) neither A nor B

Q: For Netflix, ________ is a(n) ________, and ________ is a(n) ________. A) Google, IaaS, AWS, IaaS B) Google, SaaS, AWS, SaaS C) Google, IaaS, AWS, SaaS D) Google, SaaS, AWS, IaaS

Q: For Netflix, Google is a(n) ________. A) IaaS B) SaaS C) both A and B D) neither A nor B

Q: IaaSs own _________. A) application software B) servers C) both A and B D) neither A nor B

Q: Which type of service manages application software for users? A) IaaS B) SaaS C) both A and B D) neither A nor B

Q: Netflix uses the most VMs ________. A) on weekends B) on weekdays C) in the evenings D) during the day

Q: Which can be moved more easily? A) a physical server B) a virtual machine C) Both are about equally easy to move. D) Neither can be moved easily.

Q: A ________ may have multiple ________. A) physical server, virtual machines B) virtual machine, physical servers C) both A and B D) neither A nor B

Q: Content delivery networks mainly ________. A) increase transmission speed B) increase program selection C) decrease program selection D) reduce latency

Q: Netflix uses AWS for its ________. A) recommendation system B) content delivery appliances C) both A and B D) neither A nor B

Q: Who controls the Internet? A) the U.S. government B) the United Nations C) the IETF D) no one

Q: ________ collectively form the core of the Internet service. A) CSPs B) ISO, the IETF, and ITU-T C) ISPs D) Telephone companies

Q: What type of address is 100 bits long? A) IPv4 B) IPv6 C) EUI-48 D) none of the above

Q: What type of address is 32 bits long? A) IPv4 B) IPv6 C) EUI-48 D) all of the above

Q: Dotted decimal notation is used by ________. A) networks B) computers C) both A and B D) neither A nor B

Q: The address 60.49.7.254 is represented in ________. A) dotted decimal notation B) EUI-48 notation C) hexadecimal notation D) binary notation

Q: 60.49.7.254 is an ________. A) IPv4 address B) IPv6 address C) both A and B D) neither A nor B

Q: What kind of address do hosts have on the Internet? A) World Wide Web URLs B) MAC addresses C) EUI-48 addresses D) IP addresses

Q: Application programs on ________ communicate by sending messages between each other. A) the same host B) different hosts C) the same network D) different networks

Q: Which of the following is a host when it is on a network? A) a client PC B) a server C) a mobile phone D) all of the above

Q: A networking device that plays an important role in directing network communication is called a ________. A) client B) server C) host D) router

Q: Depicting the Internet as a cloud symbolizes that ________. A) the Internet is amorphous B) the Internet is no longer understandable by humans C) the Internet is too complex for anyone to depict D) users do not have to know how the Internet operates and where resources are located

Q: A group of Active Directory trees organized in a hierarchy is a forest.

Q: A company may have many AD domains.

Q: Active Directory is Microsoft's directory server product.

Q: If a company has multiple authentication servers, which devices are likely to hold the authentication data? A) authenticators B) authentication servers individually C) authentication servers doing replication D) directory servers

Q: Which device holds authentication data? A) authenticator B) authentication server C) both A and B D) neither A nor B

Q: In Active Directory domains, there is a partial replication between domain controllers ________. A) in the same domain B) in different domains at adjacent levels in the domain hierarchy C) both A and B D) neither A nor B

Q: A group of Active Directory domains organized in a hierarchy is a ________. A) network B) tree C) forest D) none of the above

Q: In Active Directory domains, there is complete replication between domain controllers ________. A) in the same domain B) in adjacent levels in the domain hierarchy C) throughout a tree D) throughout a forest