Quiz
Computer Networking
- How many layers does the Open Systems Interconnection Model (OSI) have?
- In what layer of the IP/TCP Model is the User Datagram Protocol found?
- Compress 02k9:1172:0000:0000:0ln0:490r:9z21:000p.
- Compress 47ov:0000:0000:elo55:000a:0000:0000:fuu0.
- Compress 0111:1100:fff4:0000:0000:0000:0000:qvmp.
- True/False? Firewalls can operate only on one layer of the network.
- True/False? In DNS, a Reverse Lookup Zone File resolves an FQDN to an IP address.
- True/False? In DNS, a Pointer Resource Record (PTR) resolves a domain name to an IP address.
- With what are twisted-pair copper cables insulated?
- At what TCP/IP layer does the Three-Way Handshake occur?
- How many levels can an FQDN have?
- How many characters can be in each section of an FQDN?
- What are the six Control Flags of the data packet at the layer in #2?
- What are the Control Flags in the Four-Way Handshake for devices to close a connection at the layer in #2?
- What are the most common twisted-pair cables in computer networking?
- What happens to an electrical impulse during crosstalk?
- True/False? A Cat6 cable transmits data at higher speeds and over longer distances than Cats 5.
- True/False? Networks with high electromagnetic interference are best outfitted with copper cables.
- What insulates fiber cables?
- How can crosstalk lead to a network error?
- True/False? Lower-level protocols can request data again if affected by crosstalk.
- What TCP/IP layer are MAC Addresses part of?
- What's an Access Point?
- WLAN, __ ___, and ____ are three kinds of wireless network connections.
- At what layer of the TCP/IP Model are protocols introduced?
- The Network Access Layer and the Network Interface Layer are other names for what TCP/IP layer?
- True/False? Hubs aren't common today because they're prone to collision domain via copper cables.
- What are the most common cables used in computer networking?
- True/False? Switches are part of the Physical Layer, along with cables; connectors; and switches.
- What protocol learns the optimal path by which to forward traffic between networks?
- What are the four basic columns of a routing table?
- True/False? Hubs remember what devices are connected to each node, while switches cannot.
- True/False? Multiple computes can run on the same node.
- True/False? Nodes can be both a server and a client.
- What is modulation?
- By default, how many Host IDs does a network lose?
- What's another name for modulation in computer networking?
- How many bits can a network cable transmit per second?
- What's the difference between collision domain and crosstalk?
- True/False? Gateway Routers communicate with other Gateway Routers while Core Routers are the entrance/exit to other Core Routers.
- What type of address does the ARP protocol resolve?
- How many twisted-pair cables are inside each jacket of a Cat6 cable?
- An RJ45 Plug terminates what kind of cable?
- Two types of lights might appear on an RJ45 Plug -- a Link LED and a _____ LED?
- CSMA/CD (Carrier-Sense Multiple Access with Collision Detection) is used by the Ethernet protocol to eliminate what?
- What does a Reserved IPv6 Address start with?
- What does an IPv6 Address reserved for Multicasting start with?
- "Octet" is another name for _____ in computer networking?
- True/False? At the Ethernet level, a data payload is everything in a data packet except for the header.
- What does "MAC" address stand for?
- How many bits does a MAC address have?
- What does CSMA/DA stand for?
- What is CSMA/DA?
- What's the range of IP addresses used for testing purposes?
- What class of IP addresses are used for multicasting?
- How many octets are in a Subnet Mask?
- In general, what kind of cables wire homes with cable television?
- At the Ethernet level, what must the least-significant bit in the first octet of a destination MAC address be for a unicast frame? A multicast frame?
- Why is "FF:FF:FF:FF:FF" NOT an Ethernet Broadcast Address, despite all its Fs?
- In computer networking, a Broadcast involves every LAN device using a broadcast address. True/False?
- True/False: Data packets are a highly specialized, structured collection of info presented in a specific order?
- Network interfaces at the physical layer can connect into data across a network link. True/False?
- Fill in the blanks of the Ethernet Frame: 1. Preamble 2. __________ 3. Destination MAC Address 4. __________ 5. __________ 6. Payload 7. __________
- List how many bytes are in each of the fields above.
- What section of an Ethernet Frame isn't transported to Payload?
- The four configurations of a computer network are the 1) ___ Server 2) IP Address 3) _______ ID and 4) ______ Mask.
- What is an important calculator in all computer networking for data integrity?
- True/False? Unless the request is too large, a DNS lookup transmits via TCP Datagram rather than UDP Datagram.
- The Ethernet protocol reports on data but doesn't perform data recovery. True/False?
- How many bits are in an IP address?
- What is a Dynamic Host Configuration Protocol (DHCP)?
- For IPv4, what's the minimum length, or Header Length, of an IP Datagram?
- After the Header Length, what are the 10 other fields of an IP Datagram?
- True/False? CIDR allows for more Network ID and/or Host ID space.
- Where in the Ethernet Frame is an IP Datagram encapsulated?
- What's the Host ID of the subnet mask 255.255.255.0?
- What's the IP address 99.7.129.134 and its subnet mask 255.255.255.252 in CIDR notation?
- How many bits are in a TTL field?
- True/False? Firewalls run on a host (via the OS) but not on a network device (particularly, the router)?
- What category of ports isn't registered with the IANA, and are used for outbound client traffic to a socket?
- True/False? CIDR allows for more contiguous Subnet ID space.
- True/False? The Subnet ID is derived from the Network ID, not the Host ID.
- True/False? Socket States for TCP connections have the same names but different functions among operating systems.
- What's the name of the ports that listen for traffic from common applications?
- For platforms that follow the IANA standard, what's the range of ports in question 67?
- How many bits are in the Source and Destination IP Addresses, respectively?
- What is the payload of an IP Datagram?
- What's the Subnet Mask of the IP address 129.8.137.251?
- What's the range of the 1st octet of a Class D IP Address?
- What's the base-2 notation for a Class C IP Address?
- What's the binary value of a Class D IP Address?
- A Class D IP Address is used for multicasting. What is multicasting?
- What does CIDR, which has mostly replaced the Address Class System, stand for?
- At what layer are MAC addresses?
- At which two layers of the TCP/IP Model does an 802.11 Frame operate?
- What is an ARP (Address Resolution Protocol)?
- True/False? The IP Datagram forms while encapsulated in the Ethernet Frame.
- True/False? A destination MAC address is necessary for a transmitting device to complete the Ethernet Frame header.
- Which receives the response to an ARP Response: the host device or the server?
- How many bits is a subnet mask?
- How many bytes is an IP Datagram header in IPv4?
- How many numbers less than the Host ID can a subnet ID have?
- What is 255 reserved for in a subnet?
- True/False? It's not standard to refer to the entire number of host IDs available for a subnet?
- How many bits are in Class B of a network ID, or for subnetting?
- How many bits are in Class C of a network ID, or for subnetting?
- CIDR has replaced much of the Address Class System. What does CIDR stand for?
- True/False? A Loopback Address redirects traffic back to the same node.
- What demarcates a network in CIDR?
- In IPv6, how many bits make up the Network ID? The Host ID?
- What's the Loopback Address for IPv4?
- What's the Loopback Address for IPv6?
- True/False? The IP address and the subnet mask are the same length?
- What layer is the MAC address part of?
- True/False? An incorrect subnetting setup is a common IT problem.
- True/False? The Host ID identified what gateway network to send a datagram.
- True/False? The gateway router extracts the IP Datagram from the Ethernet Frame when inspecting it for a destination address.
- What's the most common protocol at the Application Layer? The Data Link Layer?
- How many IP addresses does a Class B Address Class System have?
- What operator does a computer use to determine if an IP address exists on the same network?
- What are two types of Interior Gateway Protocols?
- True/False? DSLAMS are the demarc for fiber-optic networks and Optical Network Terminals (ONT) for DSL?
- True/False? Interior Gateway Protocols share info within multiple nodes of an autonomous system.
- An Autonomous System is a collection of independent networks controlled by a single operator. What is an example of an Autonomous System?
- What are Link-Local Unicast Addresses in IPv6?
- True/False? ASNs (Autonomous System Numbers) are 64-bit numbers in decimal notation.
- True/False? An ASN never changes when it represents more networks or hops, just its core routing table.
- True/False? ISPs are where Exterior Gateway Protocols are significant in IT.
- What's the most common Link-State Protocol? (Hint: OSPF)
- What is a Non-Routable Address Space?
- What are the three IP addresses reserved for Non-Routable Address Space?
- True/False? NAT (Network Address Translation) allows computers on a Non-Routable Address Space to communicate with other network devices on the Internet.
- How many bits are in a port?
- What is 10.1.1.100:80 an example of?
- What is Port 25? Port 9100? Port 21?
- Fill in the blanks for the TCP Header: Source Port ( ) | Destination Port ( ) ||||| _________________________ (32) ||||| Acknowledgment Number (32) ||||| _______________ (4) | _______________ (16) ||||| Options ( ) | Padding ||||| __________ (Varies)
- True/False? Source ports are chosen from ports known ephemeral ports.
- True/False? The Urgent Pointer Field of a TCP Header is a major part of modern computer networking?
- What are the 2 additional layers of the OSI Model?
- True/False? RST can indicate the server hasn't recovered from malformed or missing segments in a TCP connection.
- True/False? An ACK of "1" indicates no need to examine the acknowledgment number.
- What is buffering?
- What's the Socket Address or Socket Number of a program listening on port 21 of a node at 35.55.75.95?
- True/False? SYN in the Control Flag ensures the transmitting end knows to examine the Sequence Field.
- After the Recursive Name Server sends a request to the Root Name Server, to what DNS Server type does the Root Server direct its inquiry in turn?
- How many root servers are there?
- The __________ Name Server redirects a query to the client computer performing the lookup with the __________ Name Server to contact?
- What are the 5 DNS Server Types?
- On what UDP port does DHCP listen for a DHCP Discovery broadcast?
- From what UPD port are DHCP Discovery broadcasts sent?
- DNS listens on what port?
- True/False? UDP has error recovery.
- How many data packets does it take a Name Resolution at the Application Layer?
- Unless the request is too large to fit into a single datagram, DNS normally uses what protocol from the Transport Layer?
- True/False? BGP -- an Exterior Gateway Protocol -- is most likely to transmit data between Autonomous Systems or ASNs.
- True/False? A domain can't point to many/different IP addresses.
- True/False? Many domain names can't point to the same IP address
- What 4 things must be configured for each computer on a TCP/IP-based network?
- A DHCP ACK has an expiration before which the client must re-negotiate a lease for DHCP configuration info? T/F?
- What type of datagram is the payload section of an Ethernet Frame made of?
- What does DSL stand for?
- DSL and Dial-Up Connection both transmit data over phone lines. They also use the same type of modems to do so? True/False?
- True/False? A Cyclical Redundancy Check can't fail if cross talk within a twisted-pair cable is only minor.
- In macOS and Linux, how does an end user send an interruption event to stop a ping command?
- In macOS and Linux, what are the two mandatory arguments of a netcat (nc) command?
- What are the six IP Addresses for Level 3 Communications' Public DNS Server?
- What are the two IP Addresses for Google's Public DNS Server?
- An IPv6 Address has how many bits?
- What's another name for a modem? (Hint: _________/___________)
- How many kilobytes (KB) are in a megabyte (MB)?
- What two bands does WiFi commonly operate on?
- In the IPv6 protocol, what's the equivalent of DHCP?
Related: Computer Networking 2 (Notes)
Related: Computer Networking 3 (Notes)
Related: Operating Systems (Quiz)
Related: "Cybersecurity and Cyberwar" (2020)
Related: Computer Networking 3 (Notes)
Related: Operating Systems (Quiz)
Related: "Cybersecurity and Cyberwar" (2020)